tag:blogger.com,1999:blog-48502448026957527482024-03-21T02:55:04.906-07:00artikel gelombang elektromagnetikbungasprayogahttp://www.blogger.com/profile/07875445475070616173noreply@blogger.comBlogger2125tag:blogger.com,1999:blog-4850244802695752748.post-19274025077085994172011-08-05T22:38:00.001-07:002011-08-05T22:38:29.181-07:00<div class="separator" style="clear: both; text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgMGCYm4UJN1Bjf1hI2TEb7hYSNCQyinRF-q0uI7R9iYNrYVcME91ZPktNt6fvyR3ypQlLEAL0iYLMER0phjgE1LzjZa1bwrXnPNHk2mbHvHq7Ox8RiaFttk_8HG99rb3gnzJfyIhuDk7hx/s1600/GEL+ELEKTROMAGNETIK.jpg" style="clear: left; float: left; margin-bottom: 1em; margin-right: 1em;"><img border="0" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgMGCYm4UJN1Bjf1hI2TEb7hYSNCQyinRF-q0uI7R9iYNrYVcME91ZPktNt6fvyR3ypQlLEAL0iYLMER0phjgE1LzjZa1bwrXnPNHk2mbHvHq7Ox8RiaFttk_8HG99rb3gnzJfyIhuDk7hx/s1600/GEL+ELEKTROMAGNETIK.jpg" /></a></div><span class="" id="result_box" lang="en"><b><span style="color: red;"> I. </span></b><span title=""><b><span style="color: red;">INTRODUCTION</span></b><br />
<br />
<br />
</span><span title="">Current technological advances increased following the use of wave elekromagnetik in everyday life.<br />
</span><span title="">As to whether the electromagnetic waves, what examples of electromagnetic waves that?</span><span title="">Electromagnetic waves in fact there is always around us, one example is the sun's rays, these waves do not require an intermediary in perambatannya medium. </span><span title="">Another example is radio waves. </span><span title="">But the spectrum of electromagnetic waves are composed of various other types of waves, which are distinguished by frequency or wavelength. </span><span title="">For that here we will learn about the range of the spectrum of electromagnetic waves, special characteristics of each of the electromagnetic waves in the spectrum and examples and application of each of the electromagnetic waves in everyday life.<br />
<br />
<br />
<br />
<br />
<br />
</span><span title="">II. </span><span title=""><span style="color: yellow;">STUDY REFERENCES</span><br />
<br />
<br />
</span><span title=""><span style="color: red;">ELECTROMAGNETIC WAVES</span><br />
<br />
<br />
</span><span title="">Electromagnetic waves are waves that can propagate even if there is no medium. </span><span title="">Electromagnetic energy travels in waves with some characters that can be measured, namely: wavelength / wavelength, frequency, amplitude / amplitude, velocity. </span><span title="">Amplitude is the height of the wave, while the wavelength is the distance between two peaks. </span><span title="">Frequency is the number of waves passing through a point in one unit of time. </span><span title="">The frequency depends on the speed of the wave climbed. </span><span title="">Because the speed of electromagnetic energy is a constant (speed of light), wavelength and frequency is inversely proportional. </span><span title="">The longer a wave, the lower the frequency, and the shorter the wave the higher frequencies.<br />
</span><span title="">Electromagnetic energy emitted, or released, by all the time in the universe on a level that berbedabeda. </span><span title="">Higher levels of energy in an energy source, the lower the wavelength of the energy produced, and the higher frequencies. </span><span title="">Different characteristics of the wave energy is used to classify the electromagnetic energy.<br />
</span><span title="">The characteristics of electromagnetic waves:</span><span title="">From the description above we can conclude several characteristics of electromagnetic waves is as follows:<br />
</span><span title="">1. </span><span title="">Changes in electric and magnetic fields occur at the same time, so that the two fields have a maximum and minimum prices at the same time and at the same place.<br />
</span><span title="">2. </span><span title="">Direction of electric field and magnetic fields perpendicular to each other and both perpendicular to the direction of propagation.<br />
</span><span title="">3. </span><span title="">Of characteristic No. 2 obtained that electromagnetic waves are transverse waves.<br />
</span><span title="">4. </span><span title="">Like the waves in general, an incident electromagnetic wave reflection, refraction, interference, and diffraction. </span><span title="">Also experienced events including the polarization due to transverse waves.<br />
</span><span title="">5. </span><span title="">Rapid propagation of electromagnetic waves depends only on the properties of electric and magnetic medium which he passes.<br />
</span><span title="">Visible light by the eye is not simply the type that allows electromagnetic radiation. </span><span title="">The opinion of James Clerk Maxwell showed that electromagnetic waves other, in contrast to visible light by the eye in she had a wavelength and frequency, there may be. </span><span title="">These theoretical conclusions were remarkably reinforced by the Heinrich Hertz, which is able to produce and meet the two waves are visible to the eye that was predicted by Maxwell. </span><span title="">A few years later Guglielmo Marconi demonstrated that the waves are invisible eye that can be used for communication without wires, so what's his name menjelmalah radio. </span><span title="">Now, we use also for television, X-rays, gamma rays, infrared rays, ultraviolet rays are examples of electromagnetic radiation. </span><span title="">Everything can be learned through the ideas of Maxwell.<br />
<br />
<br />
<br />
<br />
<br />
<b> </b></span><span title=""><b>SOURCE ELECTROMAGNETIC WAVES</b><br />
<br />
</span><span title="">1. </span><span title="">Electrical oscillations.<br />
</span><span title="">2. </span><span title="">Sunlight generating infrared rays.<br />
</span><span title="">3. </span><span title=""> mercury lamp produces ultra violet.<br />
</span><span title="">4. </span><span title="">The shooting of electrons in vacuum tubes on the metal pieces produce X-rays (used for x-rays).<br />
</span><span title="">An unstable atomic nuclei produce gamma rays.<br />
<br />
<br />
</span><span title=""><b><span style="color: black;">ELECTROMAGNETIC WAVE SPECTRUM</span></b><br />
</span><span title="">The composition of all forms of electromagnetic waves by their wavelengths and frequencies called the electromagnetic spectrum. </span><span title="">Electromagnetic spectrum images below is based on the wavelength (measured in units _M) includes a very low energy range, with wavelengths of high and low frequencies, like radio waves up to very high energies, with a low wavelength and high frequency radiation such as X </span><span title="">-ray and Gamma Ray.<br />
<br />
<br />
</span><span title=""><b>Examples of the electromagnetic spectrum</b><br />
<br />
<br />
</span><span title=""><span style="color: red;">Radio waves</span><br />
</span><span title="">Radio waves are classified according to wavelength or frequency. </span><span title="">If the wavelength is high, then surely the low-frequency or vice versa. </span><span title="">Frequency radio waves ranging from 30 kHz up and grouped according to the width of the frequency. </span><span title="">Radio waves generated by electric charges are accelerated through the wire-wire conductor. </span><span title="">Charges are generated by the electronic circuit called an oscillator. </span><span title="">These radio waves emitted from the antenna and received by the antenna anyway. </span><span title="">You can not hear the radio directly, but the receiver will change the first radio wave energy into sound energy.<br />
<br />
<br />
</span><span title=""><span style="color: red;">Microwaves</span><br />
</span><span title="">Microwaves (mikrowaves) is a radio wave with the highest frequency that is above 3 GHz. </span><span title="">If the microwaves are absorbed by an object, it would appear the effect of heating on the thing. </span><span title="">If the food absorb microwave radiation, then the food gets hot in a very short time interval. </span><span title="">The process is utilized in a microwave oven to cook food quickly and economically.<br />
</span><span title="">Microwaves are also used in aircraft RADAR (Radio Detection and ranging) Radar is looking for and determine the footprint of an object by using microwaves. </span><span title="">Aircraft utilizing radar reflection properties of microwaves. </span><span title="">Due to rapid propagation of electromagnetic glombang c = 3 X 108 m / s, then by observing the time interval between transmitting the reception.<br />
<br />
</span><span title=""><span style="color: red;">Infrared rays</span><br />
</span><span title="">Infrared beam covers an area up to 1014 Hz 1011Hz frequency or wavelength region 10-4 cm to 10-1 cm. </span><span title="">if you check the spectrum produced by an incandescent lamp with a detector which is connected to the miliampermeter, then the needle ampermeter slightly above the red end of the spectrum. </span><span title="">Rays are not visible but can be detected above the red spectrum is called infrared radiation.</span><span title="">Infamerah rays produced by electrons in the molecules vibrate due diipanaskan objects. </span><span title="">So any hot objects emit infrared light definitely. </span><span title="">The amount of infrared light emitted depends on the temperature and color of objects.<br />
<br />
<br />
</span><span title=""><span style="color: red;">Visible light</span><br />
</span><span title="">Visible light as electromagnetic radiation of the best known by us can be defined as part of the electromagnetic wave spectrum that can be detected by the human eye. </span><span title="">The wavelength depends on the color looks nervariasi wavelengths ranging from approximately 4 x 10-7 m to light violet (purple) to 7x 10-7 m for a red light. </span><span title="">Usefulness of light one of them go round the use of lasers in optical fibers in telecommunications and medicine.<br />
<br />
</span><span title=""><span style="color: red;">Ultraviolet light</span><br />
</span><span title="">Ultraviolet light has a frequency in the region of 1015 Hz to 1016 Hz or in the length of gelombagn 10-8 m 10-7 m </span><span title="">These waves generated by atoms and molecules in an electric flame. </span><span title="">The sun is the major source that emits ultraviolet rays on the surface of the earth, the ozone layer is in the top layer that serves atmosferlah absorb ultraviolet rays and ultraviolet rays that do not continue to endanger the lives of living beings on earth.<br />
<br />
</span><span title=""><span style="color: red;">X-ray</span><br />
</span><span title="">X-rays have a frequency between 10 Hz to 10 Hz. </span><span title="">very short wavelength of 10 cm to 10 cm. </span><span title="">although as it is but an X-ray has a strong penetrating power, can penetrate thick books, a few centimeters thick wood and aluminum plates 1 cm thick.<br />
<br />
</span><span title="">Gamma rays<br />
</span><span title="">Gamma rays have a frequency between 10 Hz to 10 Hz or a wavelength of between 10 cm to 10 cm. </span><span title="">Greatest penetrating power, which causes serious effects if absorbed by body tissues.<br />
<br />
<br />
</span><span title="">Examples of the application of electromagnetic waves in everyday life:<br />
<br />
</span><span title="">1.<br />
</span><span title="">1. </span><span title=""><b><span style="color: red;">Radio</span></b><br />
</span><span title="">Radio energy is the lowest form of electromagnetic energy levels, with a wavelength range from thousands of kilometers to less than one meter. </span><span title="">The use most is communication, to examine the space and radar systems. </span><span title="">Radar is useful for studying weather patterns, storms, making a 3D map of the earth's surface, measuring rainfall, movement of ice in the polar regions and environmental monitor. </span><span title="">Radar wavelength range between 0.8 - 100 cm.<br />
<br />
</span><span title="">1.<br />
</span><span title="">1. </span><span title="">Microwave<br />
</span><span title="">Microwave radiation wavelength range between 0.3 - 300 cm. </span><span title="">Its use is mainly in the fields of communication and information delivery through open space, cooking, and the system is active PJ. </span><span title="">PJ active on the system, a microwave pulse is fired through a target and its reflection is measured to study the characteristics of the target. </span><span title="">As an application example is the Tropical Rainfall Measuring Mission's (TRMM) Microwave Imager (TMI), which measures the microwave radiation emitted from the electromagnetic spectrum of electromagnetic energy of the earth's atmosphere to measure evaporation, water content in clouds and rain intensity.<br />
<br />
</span><span title="">1.<br />
</span><span title="">1. </span><span title=""><b>Infrared</b><br />
</span><span title="">Health conditions can be diagnosed by investigating the infrared emission from the body. </span><span title="">Special infrared photo called thermogram is used to detect blood circulation problems, arthritis and cancer. </span><span title="">Infrared radiation can also be used in burglar alarms. </span><span title="">A thief without his knowledge will prevent light and hide the alarm. </span><span title="">Communicate with the TV remote control via infrared radiation generated by the LED (Light Emiting Diode) contained in the unit, so that we can turn on the TV from a distance using a remote control.<br />
<br />
<br />
</span><span style="color: lime;" title="">d. </span><span title=""><span style="color: lime;">Ultraviolet</span><br />
<br />
<br />
</span><span title="">UV rays are needed in the assimilation of plants and can kill germs skin diseases.<br />
<br />
<br />
</span><span style="color: lime;" title="">e. </span><span title=""><span style="color: lime;">X-ray</span><br />
<br />
<br />
</span><span title="">X-rays are commonly used in medicine for photographing the position of the bones in the body especially to determine the fracture. </span><span title="">However, the use of X-rays should be careful because the tissues of human cells can be damaged by the use of X rays that are too long.<br />
<br />
<br />
<br />
<br />
<br />
</span><span title="">III.<b><span style="color: red;"> </span></b></span><span title=""><b><span style="color: red;">CONCLUSION</span></b><br />
</span><span title="">From the above discussion, it can be concluded that the electromagnetic waves so large a useful role in our daily lives, without us knowing it existed.<br />
</span><span title="">Electromagnetic spectrum is the range of all possible electromagnetic radiation. </span><span title="">Electromagnetic spectrum can be explained in wavelength, frequency, or energy per photon. </span><span title="">This spectrum is directly related to:<br />
<br />
</span><span title="">* The wavelength multiplied by frequency is the speed of light: 300 Mm / s, ie 300 MmHz<br />
<br />
</span><span title="">* The energy of the photons is 4.1 FEV per Hz, which is 4.1μeV/GHz<br />
<br />
</span><span title="">* The wavelength multiplied by the energy per photon is 1:24 μeVm<br />
</span><span title="">Electromagnetic spectrum can be divided into several regions extending from gamma rays of high-energy short-wave to the microwaves and radio waves with extremely long wavelengths. </span><span title="">The division is actually not so firm and grew from the practical use of the histor</span><span title="">is derived from a variety of detection methods. </span><span title="">Usually, in describing the electromagnetic spectrum of energy is expressed<br />
</span><span title="">in elektronvolt for high-energy photons (above 100 eV), the wavelength for intermediate energy, and the frequency for low energy (? = 0.5 mm). </span><span title="">The term "optical spectrum" is also still widely used in referring to the electromagnetic spectrum, although it only covers some of the wavelength range alone (320-700 nm) [1].<br />
</span><span title="">And some examples of the electromagnetic spectrum such as:<br />
</span><span title="">Radar<br />
</span><span title="">(Radio Detection And ranging), is used as transmitter and wave receiver.<br />
</span><span title="">Infra Red<br />
</span><span title="">Resulting from the vibrations of atoms in the material and used to study the molecular structure<br />
</span><span title="">Visible light<br />
</span><span title="">has a wavelength of 3990 A º - 7800 º A.<br />
</span><span title="">Ultra violet<br />
</span><span title="">utilized for the introduction of elements of a material with spectroscopic techniques.<br />
<br />
<br />
<br />
sumber : <span style="color: #0b5394;">http://brigittalala.wordpress.com/pesan-dan-kesan-mengikuti-pree-test-fisika/gelombang-elektromagnetik/</span></span></span>bungasprayogahttp://www.blogger.com/profile/07875445475070616173noreply@blogger.com0tag:blogger.com,1999:blog-4850244802695752748.post-77982953225132137742011-08-03T21:58:00.000-07:002011-08-05T22:44:09.701-07:00<div class="posttitle"> <h2 class="pagetitle">Gelombang Elektromagnetik</h2><small>Oleh <strong>Bungas Prayoga XII IPA 3</strong></small> </div><div class="entry"> <div class="separator" style="clear: both; text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEi6qMPddV1HgB6QMHDJR18yKJPr6N9ueDC2Db8MmlI9V_Ob-_jSVbKJ3XHMy5Htb_u9W6ek_fB10rsdaLF-XmG0dmdNl0pepIbu22BfcBl6rroeEWMZRBET1y7YB5ci_auIjrNgZ7LYULRl/s1600/GEL+ELEKTROMAGNETIK.jpg" imageanchor="1" style="clear: left; float: left; margin-bottom: 1em; margin-right: 1em;"><img border="0" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEi6qMPddV1HgB6QMHDJR18yKJPr6N9ueDC2Db8MmlI9V_Ob-_jSVbKJ3XHMy5Htb_u9W6ek_fB10rsdaLF-XmG0dmdNl0pepIbu22BfcBl6rroeEWMZRBET1y7YB5ci_auIjrNgZ7LYULRl/s1600/GEL+ELEKTROMAGNETIK.jpg" /></a></div><div class="MsoNormal" style="line-height: 150%; margin: 0pt 0pt 0pt 36pt; text-indent: -36pt;"><strong><span lang="IN" style="font-family: Arial; font-size: 11pt; line-height: 150%;"><span><span style="font: 7pt "";"> </span><br />
<br />
<br />
<br />
I.<span style="font: 7pt "";"> </span></span></span></strong><strong><span lang="IN" style="font-family: Arial; font-size: 11pt; line-height: 150%;">PENDAHULUAN</span></strong></div><div class="MsoNormal" style="line-height: 150%; margin: 0pt 0pt 0pt 27pt;"><br />
</div><div class="MsoNormal" style="line-height: 150%; margin: 0pt 0pt 0pt 27pt; text-align: justify;"><span lang="IN" style="font-family: Arial; font-size: 11pt; line-height: 150%;">Kemajuan teknologi saat ini semakin meningkat berikut dalam penggunaan gelombang elekromagnetik dalam kehidupan sehari-hari. </span></div><div class="MsoNormal" style="line-height: 150%; margin: 0pt 0pt 0pt 27pt; text-align: justify;"><span lang="IN" style="font-family: Arial; font-size: 11pt; line-height: 150%;">Seperti apakah gelombang elektromagnetik, apa contoh gelombang elektromagnetik itu?<br />
Gelombang elektromagnetik sebenarnya selalu ada disekitar kita, salah satu contohnya adalah sinar matahari, gelombang ini tidak memerlukan medium perantara dalam perambatannya. Contoh lain adalah gelombang radio. Tetapi spektrum gelombang elektromagnetik masih terdiri dari berbagai jenis gelombang lainnya, yang dibedakan berdasarkan frekuensi atau panjang gelombangnya. Untuk itu disini kita akan mempelajari tentang rentang spektrum gelombang elektromagnetik, karakteristik khusus masing-masing gelombang elektromagnetik di dalam spectrum dan contoh dan penerapan masing-masing gelombang elektromagnetik dalam kehidupan sehari-hari.</span></div><div class="MsoNormal" style="line-height: 150%; margin: 0pt 0pt 0pt 27pt; text-align: justify;"><br />
</div><div class="MsoNormal" style="line-height: 150%; margin: 0pt 0pt 0pt 27pt; text-align: justify;"><br />
</div><div class="MsoNormal" style="line-height: 150%; margin: 0pt 0pt 0pt 36pt; text-indent: -36pt;"><strong><span lang="IN" style="font-family: Arial; font-size: 11pt; line-height: 150%;"><span><span style="font: 7pt "";"> </span>II.<span style="font: 7pt "";"> </span></span></span></strong><strong><span lang="IN" style="font-family: Arial; font-size: 11pt; line-height: 150%;">KAJIAN PUSTAKA</span></strong></div><div class="MsoNormal" style="line-height: 150%; margin: 0pt;"><br />
</div><div align="center" class="MsoNormal" style="line-height: 150%; margin: 0pt; text-align: center;"><strong><span style="text-decoration: underline;"><span lang="IN" style="font-family: Arial; font-size: 11pt; line-height: 150%;">GELOMBANG ELEKTROMAGNETIK</span></span></strong></div><div align="center" class="MsoNormal" style="line-height: 150%; margin: 0pt; text-align: center;"><br />
</div><div class="MsoNormal" style="line-height: 150%; margin: 0pt; text-align: justify; text-indent: 36pt;"><span lang="SV" style="font-family: Arial; font-size: 11pt; line-height: 150%;">Gelombang Elektromagnetik adalah</span><span lang="SV" style="font-family: Arial; font-size: 11pt; line-height: 150%;"> </span><span lang="SV" style="font-family: Arial; font-size: 11pt; line-height: 150%;">gelombang yang dapat merambat </span><span lang="SV" style="font-family: Arial; font-size: 11pt; line-height: 150%;"><span> </span></span><span lang="SV" style="font-family: Arial; font-size: 11pt; line-height: 150%;">walau tidak ada medium. </span><span lang="SV" style="font-family: Arial; font-size: 11pt; line-height: 150%;">Energi elektromagnetik merambat dalam gelombang dengan beberapa karakter yang bisa diukur, yaitu: panjang gelombang/wavelength, frekuensi, amplitude/amplitude, kecepatan. Amplitudo adalah tinggi gelombang, sedangkan panjang gelombang adalah jarak antara dua puncak. Frekuensi adalah jumlah gelombang yang melalui suatu titik dalam satu satuan waktu. </span><span style="font-family: Arial; font-size: 11pt; line-height: 150%;">Frekuensi tergantung dari kecepatan merambatnya gelombang. Karena kecepatan energi elektromagnetik adalah konstan (kecepatan cahaya), panjang gelombang dan frekuensi berbanding terbalik. Semakin panjang suatu gelombang, semakin rendah frekuensinya, dan semakin pendek suatu gelombang semakin tinggi frekuensinya. </span></div><div class="MsoNormal" style="line-height: 150%; margin: 0pt; text-align: justify;"><span lang="IN" style="font-family: Arial; font-size: 11pt; line-height: 150%;"></span></div><div style="line-height: 150%; text-align: justify; text-indent: 36pt;"><span lang="SV" style="font-family: Arial; font-size: 11pt; line-height: 150%;">Energi elektromagnetik dipancarkan, atau dilepaskan, oleh semua masa di alam semesta pada level yang berbedabeda. Semakin tinggi level energi dalam suatu sumber energi, semakin rendah panjang gelombang dari energi yang dihasilkan, dan semakin tinggi frekuensinya. </span><span style="font-family: Arial; font-size: 11pt; line-height: 150%;">Perbedaan karakteristik energi gelombang digunakan untuk mengelompokkan energi elektromagnetik. </span></div><div style="line-height: 150%;"><strong><span lang="SV" style="font-family: Arial; font-size: 11pt; line-height: 150%;">Ciri-ciri gelombang elektromagnetik :<br />
</span></strong><span lang="SV" style="font-family: Arial; font-size: 11pt; line-height: 150%;">Dari uraian tersebut diatas dapat disimpulkan beberapa ciri gelombang elektromagnetik adalah sebagai berikut:</span></div><div style="line-height: 150%; margin-left: 36pt; text-align: justify; text-indent: -18pt;"><span lang="SV" style="font-family: Arial; font-size: 11pt; line-height: 150%;"><span>1.<span style="font: 7pt "";"> </span></span></span><span lang="SV" style="font-family: Arial; font-size: 11pt; line-height: 150%;">Perubahan medan listrik dan medan magnetik terjadi pada saat yang bersamaan, sehingga kedua medan memiliki harga maksimum dan minimum pada saat yang sama dan pada tempat yang sama.</span></div><div style="line-height: 150%; margin-left: 36pt; text-align: justify; text-indent: -18pt;"><span lang="SV" style="font-family: Arial; font-size: 11pt; line-height: 150%;"><span>2.<span style="font: 7pt "";"> </span></span></span><span lang="SV" style="font-family: Arial; font-size: 11pt; line-height: 150%;">Arah medan listrik dan medan magnetik saling tegak lurus dan keduanya tegak lurus terhadap arah rambat gelombang.</span></div><div style="line-height: 150%; margin-left: 36pt; text-align: justify; text-indent: -18pt;"><span lang="SV" style="font-family: Arial; font-size: 11pt; line-height: 150%;"><span>3.<span style="font: 7pt "";"> </span></span></span><span lang="SV" style="font-family: Arial; font-size: 11pt; line-height: 150%;">Dari ciri no 2 diperoleh bahwa gelombang elektromagnetik merupakan gelombang transversal.</span></div><div style="line-height: 150%; margin-left: 36pt; text-align: justify; text-indent: -18pt;"><span style="font-family: Arial; font-size: 11pt; line-height: 150%;"><span>4.<span style="font: 7pt "";"> </span></span></span><span lang="SV" style="font-family: Arial; font-size: 11pt; line-height: 150%;">Seperti halnya gelombang pada umumnya, gelombang elektromagnetik mengalami peristiwa pemantulan, pembiasan, interferensi, dan difraksi. Juga mengalami peristiwa polarisasi karena termasuk gelombang transversal.</span><span style="font-family: Arial; font-size: 11pt; line-height: 150%;"></span></div><div style="line-height: 150%; margin-left: 36pt; text-align: justify; text-indent: -18pt;"><span lang="SV" style="font-family: Arial; font-size: 11pt; line-height: 150%;"><span>5.<span style="font: 7pt "";"> </span></span></span><span lang="SV" style="font-family: Arial; font-size: 11pt; line-height: 150%;">Cepat rambat gelombang elektromagnetik hanya bergantung pada sifat-sifat listrik dan magnetik medium yang ditempuhnya.</span></div><div style="line-height: 150%; text-align: justify; text-indent: 36pt;"><span lang="SV" style="font-family: Arial; font-size: 11pt; line-height: 150%;">Cahaya yang tampak oleh mata bukan semata jenis yang memungkinkan radiasi elektromagnetik. Pendapat James Clerk Maxwell menunjukkan bahwa gelombang elektromagnetik lain, berbeda dengan cahaya yang tampak oleh mata dalam dia punya panjang gelombang dan frekuensi, bisa saja ada. Kesimpulan teoritis ini secara mengagumkan diperkuat oleh Heinrich Hertz, yang sanggup menghasilkan dan menemui kedua gelombang yang tampak oleh mata yang diramalkan oleh Maxwell itu. Beberapa tahun kemudian Guglielmo Marconi memperagakan bahwa gelombang yang tak terlihat mata itu dapat digunakan buat komunikasi tanpa kawat sehingga menjelmalah apa yang namanya radio itu. Kini, kita gunakan juga buat televisi, sinar X, sinar gamma, sinar infra, sinar ultraviolet adalah contoh-contoh dari radiasi elektromagnetik. Semuanya bisa dipelajari lewat hasil pemikiran Maxwell. </span></div><div style="line-height: 150%; text-align: justify; text-indent: 36pt;"><br />
</div><div style="line-height: 150%; margin-left: 18pt;"><br />
</div><div style="line-height: 150%; margin-left: 18pt;"><span lang="SV" style="font-family: Arial; font-size: 11pt; line-height: 150%;"> </span><strong><span style="font-family: Arial; font-size: 11pt; line-height: 150%;">SUMBER GELOMBANG ELEKTROMAGNETIK</span></strong><span style="font-family: Arial; font-size: 11pt; line-height: 150%;"></span></div><ol type="1"><li class="MsoNormal"><span style="font-family: Arial; font-size: 11pt; line-height: 150%;">Osilasi listrik.</span></li>
<li class="MsoNormal"><span lang="SV" style="font-family: Arial; font-size: 11pt; line-height: 150%;">Sinar matahari </span><span style="font-family: Arial; font-size: 11pt; line-height: 150%;"></span><span lang="SV" style="font-family: Arial; font-size: 11pt; line-height: 150%;"> menghasilkan sinar <strong>infra merah</strong>.</span></li>
<li class="MsoNormal"><span lang="FI" style="font-family: Arial; font-size: 11pt; line-height: 150%;">Lampu merkuri </span><span style="font-family: Arial; font-size: 11pt; line-height: 150%;"></span><span lang="FI" style="font-family: Arial; font-size: 11pt; line-height: 150%;"> menghasilkan <strong>ultra violet</strong>.</span></li>
<li class="MsoNormal"><span lang="SV" style="font-family: Arial; font-size: 11pt; line-height: 150%;">Penembakan elektron dalam tabung hampa pada keping logam </span><span style="font-family: Arial; font-size: 11pt; line-height: 150%;"></span><span lang="SV" style="font-family: Arial; font-size: 11pt; line-height: 150%;"> menghasilkan <strong>sinar X</strong> (digunakan untuk rontgen).</span></li>
</ol><div style="line-height: 150%;"><span lang="SV" style="font-family: Arial; font-size: 11pt; line-height: 150%;">Inti atom yang tidak stabil<span> </span>menghasilkan <strong>sinar gamma</strong>.</span></div><div style="line-height: 150%;"><br />
</div><div class="MsoNormal" style="line-height: 150%; margin: 0pt;"><strong><span style="text-decoration: underline;"><span lang="SV" style="font-family: Arial; font-size: 11pt; line-height: 150%;">SPEKTRUM GELOMBANG ELEKTROMAGNETIK</span></span></strong></div><div style="line-height: 150%; text-align: justify;"><span lang="SV" style="font-family: Arial; font-size: 11pt; line-height: 150%;">Susunan semua bentuk gelombang elektromagnetik berdasarkan panjang gelombang dan frekuensinya disebut spektrum elektromagnetik. Gambar spectrum elektromagnetik di bawah disusun berdasarkan panjang gelombang (diukur dalam satuan _m) mencakup kisaran energi yang sangat rendah, dengan panjang gelombang tinggi dan frekuensi rendah, seperti gelombang radio sampai ke energi yang sangat tinggi, dengan panjang gelombang rendah dan frekuensi tinggi seperti radiasi X-ray dan Gamma Ray. </span></div><div align="center" class="MsoNormal" style="line-height: 150%; margin: 0pt 0pt 0pt 36pt; text-align: center;"><span lang="SV" style="font-family: Arial; font-size: 11pt; line-height: 150%;"></span></div><div class="MsoNormal" style="line-height: 150%; margin: 0pt; text-align: justify;"><br />
</div><div class="MsoNormal" style="line-height: 150%; margin: 0pt; text-align: justify;"><strong><span lang="IN" style="font-family: Arial; font-size: 11pt; line-height: 150%;">Contoh spektrum elektromagnetik</span></strong></div><div class="MsoNormal" style="line-height: 150%; margin: 0pt; text-align: justify;"><br />
</div><div class="MsoNormal" style="line-height: 150%; margin: 0pt;"><span lang="IN" style="color: red; font-family: Arial; font-size: 11pt; line-height: 150%;">Gelombang Radio </span></div><div class="MsoNormal" style="line-height: 150%; margin: 0pt; text-align: justify;"><span lang="IN" style="font-family: Arial; font-size: 11pt; line-height: 150%;">Gelombang radio dikelompokkan menurut panjang gelombang atau frekuensinya. </span><span lang="SV" style="font-family: Arial; font-size: 11pt; line-height: 150%;">Jika panjang gelombang tinggi, maka pasti frekuensinya rendah atau sebaliknya. Frekuensi gelombang radio mulai dari 30 kHz ke atas dan dikelompokkan berdasarkan lebar frekuensinya. Gelombang radio dihasilkan oleh muatan-muatan listrik yang dipercepat melalui kawat-kawat penghantar. Muatan-muatan ini dibangkitkan oleh rangkaian elektronika yang disebut osilator. Gelombang radio ini dipancarkan dari antena dan diterima oleh antena pula. Kamu tidak dapat mendengar radio secara langsung, tetapi penerima radio akan mengubah terlebih dahulu energi gelombang menjadi energi bunyi. </span></div><div class="MsoNormal" style="line-height: 150%; margin: 0pt;"><span lang="SV" style="font-family: Arial; font-size: 11pt; line-height: 150%;"> </span><span lang="SV" style="font-family: Arial; font-size: 11pt; line-height: 150%;"> </span></div><div class="MsoNormal" style="line-height: 150%; margin: 0pt;"><span lang="SV" style="color: red; font-family: Arial; font-size: 11pt; line-height: 150%;">Gelombang mikro </span></div><div class="MsoNormal" style="line-height: 150%; margin: 0pt; text-align: justify;"><span lang="SV" style="font-family: Arial; font-size: 11pt; line-height: 150%;">Gelombang mikro (mikrowaves) adalah gelombang radio dengan frekuensi paling tinggi yaitu diatas 3 GHz. Jika gelombang mikro diserap oleh sebuah benda, maka akan muncul efek pemanasan pada benda itu. Jika makanan menyerap radiasi gelombang mikro, maka makanan menjadi panas dalam selang waktu yang sangat singkat. Proses inilah yang dimanfaatkan dalam microwave oven untuk memasak makanan dengan cepat dan ekonomis. </span></div><div class="MsoNormal" style="line-height: 150%; margin: 0pt; text-align: justify;"><span lang="SV" style="font-family: Arial; font-size: 11pt; line-height: 150%;">Gelombang mikro juga dimanfaatkan pada pesawat RADAR (Radio Detection and Ranging) RADAR berarti mencari dan menentukan jejak sebuah benda dengan menggunakan gelombang mikro. Pesawat radar memanfaatkan sifat pemantulan gelombang mikro. Karena cepat rambat glombang elektromagnetik c = 3 X 108 m/s, maka dengan mengamati selang waktu antara pemancaran dengan penerimaan. </span></div><div class="MsoNormal" style="line-height: 150%; margin: 0pt;"><span lang="SV" style="font-family: Arial; font-size: 11pt; line-height: 150%;"> </span><span lang="SV" style="font-family: Arial; font-size: 11pt; line-height: 150%;"><br />
<span style="color: red;">Sinar Inframerah </span></span></div><div class="MsoNormal" style="line-height: 150%; margin: 0pt; text-align: justify;"><span lang="SV" style="font-family: Arial; font-size: 11pt; line-height: 150%;">Sinar inframerah meliputi daerah frekuensi 1011Hz sampai 1014 Hz atau daerah panjang gelombang 10-4 cm sampai 10-1 cm. jika kamu memeriksa spektrum yang dihasilkan oleh sebuah lampu pijar dengan detektor yang dihubungkan pada miliampermeter, maka jarum ampermeter sedikit diatas ujung spektrum merah. Sinar yang tidak dilihat tetapi dapat dideteksi di atas spektrum merah itu disebut radiasi inframerah.<br />
Sinar infamerah dihasilkan oleh elektron dalam molekul-molekul yang bergetar karena benda diipanaskan. Jadi setiap benda panas pasti memancarkan sinar inframerah. Jumlah sinar inframerah yang dipancarkan bergantung pada suhu dan warna benda. </span></div><div class="MsoNormal" style="line-height: 150%; margin: 0pt; text-align: justify;"><br />
</div><div class="MsoNormal" style="line-height: 150%; margin: 0pt;"><span lang="SV" style="color: red; font-family: Arial; font-size: 11pt; line-height: 150%;">Cahaya tampak </span></div><div class="MsoNormal" style="line-height: 150%; margin: 0pt; text-align: justify;"><span lang="SV" style="font-family: Arial; font-size: 11pt; line-height: 150%;">Cahaya tampak sebagai radiasi elektromagnetik yang paling dikenal oleh kita dapat didefinisikan sebagai bagian dari spektrum gelombang elektromagnetik yang dapat dideteksi oleh mata manusia. Panjang gelombang tampak nervariasi tergantung warnanya mulai dari panjang gelombang kira-kira 4 x 10-7 m untuk cahaya violet (ungu) sampai 7x 10-7 m untuk cahaya merah. Kegunaan cahaya salah satunya adlah penggunaan laser dalam serat optik pada bidang telekomunikasi dan kedokteran. </span></div><div class="MsoNormal" style="line-height: 150%; margin: 0pt; text-align: justify;"><span lang="SV" style="font-family: Arial; font-size: 11pt; line-height: 150%;"><br />
<span style="color: red;">Sinar ultraviolet<span> </span></span></span></div><div class="MsoNormal" style="line-height: 150%; margin: 0pt; text-align: justify;"><span lang="SV" style="font-family: Arial; font-size: 11pt; line-height: 150%;">Sinar ultraviolet mempunyai frekuensi dalam daerah 1015 Hz sampai 1016 Hz atau dalam daerah panjang gelombagn 10-8 m 10-7 m. gelombang ini dihasilkan oleh atom dan molekul dalam nyala listrik. Matahari adalah sumber utama yang memancarkan sinar ultraviolet dipermukaan bumi,lapisan ozon yang ada dalam lapisan atas atmosferlah yang berfungsi menyerap sinar ultraviolet dan meneruskan sinar ultraviolet yang tidak membahayakan kehidupan makluk hidup di bumi. </span></div><div class="MsoNormal" style="line-height: 150%; margin: 0pt; text-align: justify;"><span lang="SV" style="font-family: Arial; font-size: 11pt; line-height: 150%;"><br />
<span style="color: red;">Sinar X<span> </span></span></span></div><div class="MsoNormal" style="line-height: 150%; margin: 0pt; text-align: justify;"><span lang="SV" style="font-family: Arial; font-size: 11pt; line-height: 150%;">Sinar X mempunyai frekuensi antara 10 Hz sampai 10 Hz . panjang gelombangnya sangat pendek yaitu 10 cm sampai 10 cm. meskipun seperti itu tapi sinar X mempunyai daya tembus kuat, dapat menembus buku tebal, kayu tebal beberapa sentimeter dan pelat aluminium setebal 1 cm. <span> </span></span></div><div class="MsoNormal" style="line-height: 150%; margin: 0pt; text-indent: 153pt;"><span lang="SV" style="font-family: Arial; font-size: 11pt; line-height: 150%;"> </span><span lang="SV" style="font-family: Arial; font-size: 11pt; line-height: 150%;"><br />
<span style="color: red;">Sinar Gamma </span></span></div><div class="MsoNormal" style="line-height: 150%; margin: 0pt; text-align: justify;"><span lang="SV" style="font-family: Arial; font-size: 11pt; line-height: 150%;">Sinar gamma mempunyai frekuensi antara 10 Hz sampai 10 Hz atau panjang gelombang antara 10 cm sampai 10 cm. Daya tembus paling besar, yang menyebabkan efek yang serius jika diserap oleh jaringan tubuh.</span><span lang="SV" style="font-family: Arial; font-size: 11pt; line-height: 150%;"> </span></div><div class="MsoNormal" style="line-height: 150%; margin: 0pt; text-indent: 153pt;"><br />
</div><div class="MsoNormal" style="line-height: 150%; margin: 0pt;"><strong><span style="text-decoration: underline;"><span lang="SV" style="font-family: Arial; font-size: 11pt; line-height: 150%;">Contoh penerapan gelombang elektromagnetik dalam kehidupan sehari-hari</span></span></strong><strong><span lang="SV" style="font-family: Arial; font-size: 11pt; line-height: 150%;"> :</span></strong></div><ol type="i"><li> <ol type="a"><li class="MsoNormal"><strong><span style="font-family: Arial; font-size: 11pt; line-height: 150%;">Radio</span></strong><span style="font-family: Arial; font-size: 11pt; line-height: 150%;"></span></li>
</ol></li>
</ol><div style="line-height: 150%; margin-left: 72pt; text-align: justify;"><span lang="SV" style="font-family: Arial; font-size: 11pt; line-height: 150%;">Radio energi adalah bentuk level energi elektromagnetik terendah, dengan kisaran panjang gelombang dari ribuan kilometer sampai kurang dari satu meter. Penggunaan paling banyak adalah komunikasi, untuk meneliti luar angkasa dan sistem radar. Radar berguna untuk mempelajari pola cuaca, badai, membuat peta 3D permukaan bumi, mengukur curah hujan, pergerakan es di daerah kutub dan memonitor lingkungan. </span><span style="font-family: Arial; font-size: 11pt; line-height: 150%;">Panjang gelombang radar berkisar antara 0.8 – 100 cm.</span></div><ol type="i"><li> <ol type="a"><li class="MsoNormal"><strong><span style="font-family: Arial; font-size: 11pt; line-height: 150%;">Microwave</span></strong><span style="font-family: Arial; font-size: 11pt; line-height: 150%;"></span></li>
</ol></li>
</ol><div style="line-height: 150%; margin-left: 72pt; text-align: justify;"><span lang="SV" style="font-family: Arial; font-size: 11pt; line-height: 150%;">Panjang gelombang radiasi microwave berkisar antara 0.3 – 300 cm. Penggunaannya terutama dalam bidang komunikasi dan pengiriman informasi melalui ruang terbuka, memasak, dan sistem PJ aktif. Pada sistem PJ aktif, pulsa microwave ditembakkan kepada sebuah target dan refleksinya diukur untuk mempelajari karakteristik target. Sebagai contoh aplikasi adalah Tropical Rainfall Measuring Mission’s (TRMM) Microwave Imager (TMI), yang mengukur radiasi microwave yang dipancarkan dari Spektrum elektromagnetik Energi elektromagnetik atmosfer bumi untuk mengukur penguapan, kandungan air di awan dan intensitas hujan.</span></div><ol type="i"><li> <ol type="a"><li class="MsoNormal"><strong><span style="font-family: Arial; font-size: 11pt; line-height: 150%;">Infrared</span></strong><span style="font-family: Arial; font-size: 11pt; line-height: 150%;"></span></li>
</ol></li>
</ol><div class="MsoNormal" style="line-height: 150%; margin: 0pt 0pt 0pt 72pt; text-align: justify;"><span style="font-family: Arial; font-size: 11pt; line-height: 150%;">Kondisi-kondisi kesehatan dapat didiagnosis dengan menyelidiki pancaran inframerah dari tubuh. Foto inframerah khusus disebut termogram digunakan untuk mendeteksi masalah sirkulasi darah, radang sendi dan kanker. Radiasi inframerah dapat juga digunakan dalam alarm pencuri. </span><span lang="SV" style="font-family: Arial; font-size: 11pt; line-height: 150%;">Seorang pencuri tanpa sepengetahuannya akan menghalangi sinar dan menyembunyikan alarm.</span><span lang="SV"><span style="font-family: Times New Roman; font-size: x-small;"> </span></span><span lang="SV" style="font-family: Arial; font-size: 11pt; line-height: 150%;">Remote control berkomunikasi dengan TV melalui radiasi sinar inframerah yang dihasilkan oleh LED ( Light Emiting Diode ) yang terdapat dalam unit, sehingga kita dapat menyalakan TV dari jarak jauh dengan menggunakan remote control.</span></div><div class="MsoNormal" style="line-height: 150%; margin: 0pt 0pt 0pt 72pt;"><br />
</div><div class="MsoNormal" style="line-height: 150%; margin: 0pt 0pt 0pt 72pt; text-indent: -18pt;"><span style="font-family: Arial; font-size: 11pt; line-height: 150%;"><span>d.<span style="font: 7pt "";"> </span></span></span><strong><span style="font-family: Arial; font-size: 11pt; line-height: 150%;">Ultraviolet</span></strong><span style="font-family: Arial; font-size: 11pt; line-height: 150%;"></span></div><div class="MsoNormal" style="line-height: 150%; margin: 0pt 0pt 0pt 54pt;"><br />
</div><div class="MsoNormal" style="line-height: 150%; margin: 0pt 0pt 0pt 72pt; text-align: justify;"><span lang="SV" style="font-family: Arial; font-size: 11pt; line-height: 150%;">Sinar UV diperlukan dalam asimilasi tumbuhan dan dapat membunuh kuman-kuman penyakit kulit.</span></div><div class="MsoNormal" style="line-height: 150%; margin: 0pt 0pt 0pt 72pt;"><br />
</div><div class="MsoNormal" style="line-height: 150%; margin: 0pt 0pt 0pt 72pt; text-indent: -18pt;"><span style="font-family: Arial; font-size: 11pt; line-height: 150%;"><span>e.<span style="font: 7pt "";"> </span></span></span><strong><span style="font-family: Arial; font-size: 11pt; line-height: 150%;">Sinar X</span></strong></div><div class="MsoNormal" style="line-height: 150%; margin: 0pt 0pt 0pt 54pt;"><br />
</div><div class="MsoNormal" style="line-height: 150%; margin: 0pt 0pt 0pt 72pt; text-align: justify;"><span style="font-family: Arial; font-size: 11pt; line-height: 150%;">Sinar X ini biasa digunakan dalam bidang kedokteran untuk memotret kedudukan tulang dalam badan terutama untuk menentukan tulang yang patah. Akan tetapi penggunaan sinar X harus hati-hati sebab jaringan sel-sel manusia dapat rusak akibat penggunaan sinar X yang terlalu lama. </span></div><div class="MsoNormal" style="line-height: 150%; margin: 0pt 0pt 0pt 72pt;"><strong><span style="font-family: Arial; font-size: 11pt; line-height: 150%;"> </span></strong><span style="font-family: Arial; font-size: 11pt; line-height: 150%;"> </span><span style="font-family: Arial; font-size: 11pt; line-height: 150%;"> </span></div><div class="MsoNormal" style="line-height: 150%; margin: 0pt 0pt 0pt 54pt;"><br />
</div><div class="MsoNormal" style="line-height: 150%; margin: 0pt 0pt 0pt 36pt; text-align: justify; text-indent: -36pt;"><strong><span style="font-family: Arial; font-size: 11pt; line-height: 150%;"><span><span style="font: 7pt "";"> </span>III.<span style="font: 7pt "";"> </span></span></span></strong><strong><span style="font-family: Arial; font-size: 11pt; line-height: 150%;">KESIMPULAN</span></strong></div><div class="MsoPlainText" style="line-height: 150%; margin: 0pt; text-align: justify;"><span style="font-family: Arial; font-size: 11pt; line-height: 150%;">Dari pembahasan di atas, dapat disimpulkan bahwa begitu besar peranan gelombang elektromagnetik yang bermanfaat dalam kehidupan kita sehari-hari, tanpa kita sadari keberadaannya. </span></div><div class="MsoPlainText" style="line-height: 150%; margin: 0pt; text-align: justify;"><span lang="SV" style="font-family: Arial; font-size: 11pt; line-height: 150%;">Spektrum elektromagnetik adalah rentang semua radiasi elektromagnetik yang mungkin. Spektrum elektromagnetik dapat dijelaskan dalam panjang gelombang, frekuensi, atau tenaga per foton. Spektrum ini secara langsung berkaitan :</span></div><div class="MsoPlainText" style="line-height: 150%; margin: 0pt;"><span lang="SV" style="font-family: Arial; font-size: 11pt; line-height: 150%;"><span> </span>* Panjang gelombang dikalikan dengan frekuensi ialah kecepatan cahaya: 300 Mm/s, yaitu 300 MmHz</span></div><div class="MsoPlainText" style="line-height: 150%; margin: 0pt;"><span lang="SV" style="font-family: Arial; font-size: 11pt; line-height: 150%;"><span> </span>* Energi dari foton adalah 4.1 feV per Hz, yaitu 4.1µeV/GHz</span></div><div class="MsoPlainText" style="line-height: 150%; margin: 0pt; text-align: justify;"><span lang="SV" style="font-family: Arial; font-size: 11pt; line-height: 150%;"><span> </span>* Panjang gelombang dikalikan dengan energy per foton adalah 1.24 µeVm</span></div><div class="MsoPlainText" style="line-height: 150%; margin: 0pt; text-align: justify;"><span lang="SV" style="font-family: Arial; font-size: 11pt; line-height: 150%;">Spektrum elektromagnetik dapat dibagi dalam beberapa daerah yang terentang dari sinar gamma gelombang pendek berenergi tinggi sampai pada gelombang mikro dan gelombang radio dengan panjang gelombang sangat panjang. Pembagian ini sebenarnya tidak begitu tegas dan tumbuh dari penggunaan praktis yang secara historis berasal dari berbagai macam metode deteksi. Biasanya dalam mendeskripsikan energi spektrum elektromagnetik dinyatakan dalam elektronvolt untuk foton berenergi tinggi (di atas 100 eV), dalam panjang gelombang untuk energi menengah, dan dalam frekuensi untuk energi rendah (? = 0,5 mm). Istilah “spektrum optik” juga masih digunakan secara luas dalam merujuk spektrum elektromagnetik, walaupun sebenarnya hanya mencakup sebagian rentang panjang gelombang saja (320 – 700 nm)[1].</span></div><div class="MsoPlainText" style="line-height: 150%; margin: 0pt; text-align: justify;"><span lang="SV" style="font-family: Arial; font-size: 11pt; line-height: 150%;">Dan beberapa contoh spektrum elektromagnetik seperti :</span></div><div class="MsoPlainText" style="line-height: 150%; margin: 0pt; text-align: justify;"><span style="font-family: Arial; font-size: 11pt; line-height: 150%;">Radar</span></div><div class="MsoPlainText" style="line-height: 150%; margin: 0pt; text-align: justify;"><span style="font-family: Arial; font-size: 11pt; line-height: 150%;">(Radio Detection And Ranging),digunakan sebagai pemancar dan penerima gelombang.</span></div><div class="MsoPlainText" style="line-height: 150%; margin: 0pt; text-align: justify;"><span style="font-family: Arial; font-size: 11pt; line-height: 150%;">Infra Merah</span></div><div class="MsoPlainText" style="line-height: 150%; margin: 0pt; text-align: justify;"><span style="font-family: Arial; font-size: 11pt; line-height: 150%;">Dihasilkan dari getaran </span><span lang="SV" style="font-family: Arial; font-size: 11pt; line-height: 150%;">atom dalam bahan dan dimanfaatkan untuk mempelajari struktur molekul</span></div><div class="MsoPlainText" style="line-height: 150%; margin: 0pt; text-align: justify;"><span lang="SV" style="font-family: Arial; font-size: 11pt; line-height: 150%;">Sinar tampak</span></div><div class="MsoPlainText" style="line-height: 150%; margin: 0pt; text-align: justify;"><span lang="SV" style="font-family: Arial; font-size: 11pt; line-height: 150%;">mempunyai panjang gelombang 3990 Aº – 7800 Aº.</span></div><div class="MsoPlainText" style="line-height: 150%; margin: 0pt; text-align: justify;"><span lang="SV" style="font-family: Arial; font-size: 11pt; line-height: 150%;">Ultra ungu</span></div><div class="MsoPlainText" style="line-height: 150%; margin: 0pt; text-align: justify;"><span lang="SV" style="font-family: Arial; font-size: 11pt; line-height: 150%;">dimanfaatkan untuk pengenalan unsur suatu bahan dengan teknik spektroskopi.<br />
</span><!--[if gte mso 9]><xml> <w:WordDocument> <w:View>Normal</w:View> <w:Zoom>0</w:Zoom> <w:TrackMoves/> <w:TrackFormatting/> <w:PunctuationKerning/> <w:ValidateAgainstSchemas/> <w:SaveIfXMLInvalid>false</w:SaveIfXMLInvalid> <w:IgnoreMixedContent>false</w:IgnoreMixedContent> <w:AlwaysShowPlaceholderText>false</w:AlwaysShowPlaceholderText> <w:DoNotPromoteQF/> <w:LidThemeOther>EN-US</w:LidThemeOther> <w:LidThemeAsian>X-NONE</w:LidThemeAsian> <w:LidThemeComplexScript>X-NONE</w:LidThemeComplexScript> <w:Compatibility> <w:BreakWrappedTables/> <w:SnapToGridInCell/> <w:WrapTextWithPunct/> <w:UseAsianBreakRules/> <w:DontGrowAutofit/> <w:SplitPgBreakAndParaMark/> <w:DontVertAlignCellWithSp/> <w:DontBreakConstrainedForcedTables/> <w:DontVertAlignInTxbx/> <w:Word11KerningPairs/> <w:CachedColBalance/> </w:Compatibility> <w:BrowserLevel>MicrosoftInternetExplorer4</w:BrowserLevel> <m:mathPr> <m:mathFont m:val="Cambria Math"/> <m:brkBin m:val="before"/> <m:brkBinSub m:val="--> <m:smallfrac m:val="off"> <m:dispdef> <m:lmargin m:val="0"> <m:rmargin m:val="0"> <m:defjc m:val="centerGroup"> <m:wrapindent m:val="1440"> <m:intlim m:val="subSup"> <m:narylim m:val="undOvr"> </m:narylim></m:intlim> </m:wrapindent><!--[endif]--><!--[if gte mso 9]><xml> <w:LatentStyles DefLockedState="false" DefUnhideWhenUsed="true"
DefSemiHidden="true" DefQFormat="false" DefPriority="99"
LatentStyleCount="267"> <w:LsdException Locked="false" Priority="0" SemiHidden="false"
UnhideWhenUsed="false" QFormat="true" Name="Normal"/> <w:LsdException Locked="false" Priority="9" SemiHidden="false"
UnhideWhenUsed="false" QFormat="true" Name="heading 1"/> <w:LsdException Locked="false" Priority="9" QFormat="true" Name="heading 2"/> <w:LsdException Locked="false" Priority="9" QFormat="true" Name="heading 3"/> <w:LsdException Locked="false" Priority="9" QFormat="true" Name="heading 4"/> <w:LsdException Locked="false" Priority="9" QFormat="true" Name="heading 5"/> <w:LsdException Locked="false" Priority="9" QFormat="true" Name="heading 6"/> <w:LsdException Locked="false" Priority="9" QFormat="true" Name="heading 7"/> <w:LsdException Locked="false" Priority="9" QFormat="true" Name="heading 8"/> <w:LsdException Locked="false" Priority="9" QFormat="true" Name="heading 9"/> <w:LsdException Locked="false" Priority="39" Name="toc 1"/> <w:LsdException Locked="false" Priority="39" Name="toc 2"/> <w:LsdException Locked="false" Priority="39" Name="toc 3"/> <w:LsdException Locked="false" Priority="39" Name="toc 4"/> <w:LsdException Locked="false" Priority="39" Name="toc 5"/> <w:LsdException Locked="false" Priority="39" Name="toc 6"/> <w:LsdException Locked="false" Priority="39" Name="toc 7"/> <w:LsdException Locked="false" Priority="39" Name="toc 8"/> <w:LsdException Locked="false" Priority="39" Name="toc 9"/> <w:LsdException Locked="false" Priority="35" QFormat="true" Name="caption"/> <w:LsdException Locked="false" Priority="10" SemiHidden="false"
UnhideWhenUsed="false" QFormat="true" Name="Title"/> <w:LsdException Locked="false" Priority="1" Name="Default Paragraph Font"/> <w:LsdException Locked="false" Priority="11" SemiHidden="false"
UnhideWhenUsed="false" QFormat="true" Name="Subtitle"/> <w:LsdException Locked="false" Priority="22" SemiHidden="false"
UnhideWhenUsed="false" QFormat="true" Name="Strong"/> <w:LsdException Locked="false" Priority="20" SemiHidden="false"
UnhideWhenUsed="false" QFormat="true" Name="Emphasis"/> <w:LsdException Locked="false" Priority="59" SemiHidden="false"
UnhideWhenUsed="false" Name="Table Grid"/> <w:LsdException Locked="false" UnhideWhenUsed="false" Name="Placeholder Text"/> <w:LsdException Locked="false" Priority="1" SemiHidden="false"
UnhideWhenUsed="false" QFormat="true" Name="No Spacing"/> <w:LsdException Locked="false" Priority="60" SemiHidden="false"
UnhideWhenUsed="false" Name="Light Shading"/> <w:LsdException Locked="false" Priority="61" SemiHidden="false"
UnhideWhenUsed="false" Name="Light List"/> <w:LsdException Locked="false" Priority="62" SemiHidden="false"
UnhideWhenUsed="false" Name="Light Grid"/> <w:LsdException Locked="false" Priority="63" SemiHidden="false"
UnhideWhenUsed="false" Name="Medium Shading 1"/> <w:LsdException Locked="false" Priority="64" SemiHidden="false"
UnhideWhenUsed="false" Name="Medium Shading 2"/> <w:LsdException Locked="false" Priority="65" SemiHidden="false"
UnhideWhenUsed="false" Name="Medium List 1"/> <w:LsdException Locked="false" Priority="66" SemiHidden="false"
UnhideWhenUsed="false" Name="Medium List 2"/> <w:LsdException Locked="false" Priority="67" SemiHidden="false"
UnhideWhenUsed="false" Name="Medium Grid 1"/> <w:LsdException Locked="false" Priority="68" SemiHidden="false"
UnhideWhenUsed="false" Name="Medium Grid 2"/> <w:LsdException Locked="false" Priority="69" SemiHidden="false"
UnhideWhenUsed="false" Name="Medium Grid 3"/> <w:LsdException Locked="false" Priority="70" SemiHidden="false"
UnhideWhenUsed="false" Name="Dark List"/> <w:LsdException Locked="false" Priority="71" SemiHidden="false"
UnhideWhenUsed="false" Name="Colorful Shading"/> <w:LsdException Locked="false" Priority="72" SemiHidden="false"
UnhideWhenUsed="false" Name="Colorful List"/> <w:LsdException Locked="false" Priority="73" SemiHidden="false"
UnhideWhenUsed="false" Name="Colorful Grid"/> <w:LsdException Locked="false" Priority="60" SemiHidden="false"
UnhideWhenUsed="false" Name="Light Shading Accent 1"/> <w:LsdException Locked="false" Priority="61" SemiHidden="false"
UnhideWhenUsed="false" Name="Light List Accent 1"/> <w:LsdException Locked="false" Priority="62" SemiHidden="false"
UnhideWhenUsed="false" Name="Light Grid Accent 1"/> <w:LsdException Locked="false" Priority="63" SemiHidden="false"
UnhideWhenUsed="false" Name="Medium Shading 1 Accent 1"/> <w:LsdException Locked="false" Priority="64" SemiHidden="false"
UnhideWhenUsed="false" Name="Medium Shading 2 Accent 1"/> <w:LsdException Locked="false" Priority="65" SemiHidden="false"
UnhideWhenUsed="false" Name="Medium List 1 Accent 1"/> <w:LsdException Locked="false" UnhideWhenUsed="false" Name="Revision"/> <w:LsdException Locked="false" Priority="34" SemiHidden="false"
UnhideWhenUsed="false" QFormat="true" Name="List Paragraph"/> <w:LsdException Locked="false" Priority="29" SemiHidden="false"
UnhideWhenUsed="false" QFormat="true" Name="Quote"/> <w:LsdException Locked="false" Priority="30" SemiHidden="false"
UnhideWhenUsed="false" QFormat="true" Name="Intense Quote"/> <w:LsdException Locked="false" Priority="66" SemiHidden="false"
UnhideWhenUsed="false" Name="Medium List 2 Accent 1"/> <w:LsdException Locked="false" Priority="67" SemiHidden="false"
UnhideWhenUsed="false" Name="Medium Grid 1 Accent 1"/> <w:LsdException Locked="false" Priority="68" SemiHidden="false"
UnhideWhenUsed="false" Name="Medium Grid 2 Accent 1"/> <w:LsdException Locked="false" Priority="69" SemiHidden="false"
UnhideWhenUsed="false" Name="Medium Grid 3 Accent 1"/> <w:LsdException Locked="false" Priority="70" SemiHidden="false"
UnhideWhenUsed="false" Name="Dark List Accent 1"/> <w:LsdException Locked="false" Priority="71" SemiHidden="false"
UnhideWhenUsed="false" Name="Colorful Shading Accent 1"/> <w:LsdException Locked="false" Priority="72" SemiHidden="false"
UnhideWhenUsed="false" Name="Colorful List Accent 1"/> <w:LsdException Locked="false" Priority="73" SemiHidden="false"
UnhideWhenUsed="false" Name="Colorful Grid Accent 1"/> <w:LsdException Locked="false" Priority="60" SemiHidden="false"
UnhideWhenUsed="false" Name="Light Shading Accent 2"/> <w:LsdException Locked="false" Priority="61" SemiHidden="false"
UnhideWhenUsed="false" Name="Light List Accent 2"/> <w:LsdException Locked="false" Priority="62" SemiHidden="false"
UnhideWhenUsed="false" Name="Light Grid Accent 2"/> <w:LsdException Locked="false" Priority="63" SemiHidden="false"
UnhideWhenUsed="false" Name="Medium Shading 1 Accent 2"/> <w:LsdException Locked="false" Priority="64" SemiHidden="false"
UnhideWhenUsed="false" Name="Medium Shading 2 Accent 2"/> <w:LsdException Locked="false" Priority="65" SemiHidden="false"
UnhideWhenUsed="false" Name="Medium List 1 Accent 2"/> <w:LsdException Locked="false" Priority="66" SemiHidden="false"
UnhideWhenUsed="false" Name="Medium List 2 Accent 2"/> <w:LsdException Locked="false" Priority="67" SemiHidden="false"
UnhideWhenUsed="false" Name="Medium Grid 1 Accent 2"/> <w:LsdException Locked="false" Priority="68" SemiHidden="false"
UnhideWhenUsed="false" Name="Medium Grid 2 Accent 2"/> <w:LsdException Locked="false" Priority="69" SemiHidden="false"
UnhideWhenUsed="false" Name="Medium Grid 3 Accent 2"/> <w:LsdException Locked="false" Priority="70" SemiHidden="false"
UnhideWhenUsed="false" Name="Dark List Accent 2"/> <w:LsdException Locked="false" Priority="71" SemiHidden="false"
UnhideWhenUsed="false" Name="Colorful Shading Accent 2"/> <w:LsdException Locked="false" Priority="72" SemiHidden="false"
UnhideWhenUsed="false" Name="Colorful List Accent 2"/> <w:LsdException Locked="false" Priority="73" SemiHidden="false"
UnhideWhenUsed="false" Name="Colorful Grid Accent 2"/> <w:LsdException Locked="false" Priority="60" SemiHidden="false"
UnhideWhenUsed="false" Name="Light Shading Accent 3"/> <w:LsdException Locked="false" Priority="61" SemiHidden="false"
UnhideWhenUsed="false" Name="Light List Accent 3"/> <w:LsdException Locked="false" Priority="62" SemiHidden="false"
UnhideWhenUsed="false" Name="Light Grid Accent 3"/> <w:LsdException Locked="false" Priority="63" SemiHidden="false"
UnhideWhenUsed="false" Name="Medium Shading 1 Accent 3"/> <w:LsdException Locked="false" Priority="64" SemiHidden="false"
UnhideWhenUsed="false" Name="Medium Shading 2 Accent 3"/> <w:LsdException Locked="false" Priority="65" SemiHidden="false"
UnhideWhenUsed="false" Name="Medium List 1 Accent 3"/> <w:LsdException Locked="false" Priority="66" SemiHidden="false"
UnhideWhenUsed="false" Name="Medium List 2 Accent 3"/> <w:LsdException Locked="false" Priority="67" SemiHidden="false"
UnhideWhenUsed="false" Name="Medium Grid 1 Accent 3"/> <w:LsdException Locked="false" Priority="68" SemiHidden="false"
UnhideWhenUsed="false" Name="Medium Grid 2 Accent 3"/> <w:LsdException Locked="false" Priority="69" SemiHidden="false"
UnhideWhenUsed="false" Name="Medium Grid 3 Accent 3"/> <w:LsdException Locked="false" Priority="70" SemiHidden="false"
UnhideWhenUsed="false" Name="Dark List Accent 3"/> <w:LsdException Locked="false" Priority="71" SemiHidden="false"
UnhideWhenUsed="false" Name="Colorful Shading Accent 3"/> <w:LsdException Locked="false" Priority="72" SemiHidden="false"
UnhideWhenUsed="false" Name="Colorful List Accent 3"/> <w:LsdException Locked="false" Priority="73" SemiHidden="false"
UnhideWhenUsed="false" Name="Colorful Grid Accent 3"/> <w:LsdException Locked="false" Priority="60" SemiHidden="false"
UnhideWhenUsed="false" Name="Light Shading Accent 4"/> <w:LsdException Locked="false" Priority="61" SemiHidden="false"
UnhideWhenUsed="false" Name="Light List Accent 4"/> <w:LsdException Locked="false" Priority="62" SemiHidden="false"
UnhideWhenUsed="false" Name="Light Grid Accent 4"/> <w:LsdException Locked="false" Priority="63" SemiHidden="false"
UnhideWhenUsed="false" Name="Medium Shading 1 Accent 4"/> <w:LsdException Locked="false" Priority="64" SemiHidden="false"
UnhideWhenUsed="false" Name="Medium Shading 2 Accent 4"/> <w:LsdException Locked="false" Priority="65" SemiHidden="false"
UnhideWhenUsed="false" Name="Medium List 1 Accent 4"/> <w:LsdException Locked="false" Priority="66" SemiHidden="false"
UnhideWhenUsed="false" Name="Medium List 2 Accent 4"/> <w:LsdException Locked="false" Priority="67" SemiHidden="false"
UnhideWhenUsed="false" Name="Medium Grid 1 Accent 4"/> <w:LsdException Locked="false" Priority="68" SemiHidden="false"
UnhideWhenUsed="false" Name="Medium Grid 2 Accent 4"/> <w:LsdException Locked="false" Priority="69" SemiHidden="false"
UnhideWhenUsed="false" Name="Medium Grid 3 Accent 4"/> <w:LsdException Locked="false" Priority="70" SemiHidden="false"
UnhideWhenUsed="false" Name="Dark List Accent 4"/> <w:LsdException Locked="false" Priority="71" SemiHidden="false"
UnhideWhenUsed="false" Name="Colorful Shading Accent 4"/> <w:LsdException Locked="false" Priority="72" SemiHidden="false"
UnhideWhenUsed="false" Name="Colorful List Accent 4"/> <w:LsdException Locked="false" Priority="73" SemiHidden="false"
UnhideWhenUsed="false" Name="Colorful Grid Accent 4"/> <w:LsdException Locked="false" Priority="60" SemiHidden="false"
UnhideWhenUsed="false" Name="Light Shading Accent 5"/> <w:LsdException Locked="false" Priority="61" SemiHidden="false"
UnhideWhenUsed="false" Name="Light List Accent 5"/> <w:LsdException Locked="false" Priority="62" SemiHidden="false"
UnhideWhenUsed="false" Name="Light Grid Accent 5"/> <w:LsdException Locked="false" Priority="63" SemiHidden="false"
UnhideWhenUsed="false" Name="Medium Shading 1 Accent 5"/> <w:LsdException Locked="false" Priority="64" SemiHidden="false"
UnhideWhenUsed="false" Name="Medium Shading 2 Accent 5"/> <w:LsdException Locked="false" Priority="65" SemiHidden="false"
UnhideWhenUsed="false" Name="Medium List 1 Accent 5"/> <w:LsdException Locked="false" Priority="66" SemiHidden="false"
UnhideWhenUsed="false" Name="Medium List 2 Accent 5"/> <w:LsdException Locked="false" Priority="67" SemiHidden="false"
UnhideWhenUsed="false" Name="Medium Grid 1 Accent 5"/> <w:LsdException Locked="false" Priority="68" SemiHidden="false"
UnhideWhenUsed="false" Name="Medium Grid 2 Accent 5"/> <w:LsdException Locked="false" Priority="69" SemiHidden="false"
UnhideWhenUsed="false" Name="Medium Grid 3 Accent 5"/> <w:LsdException Locked="false" Priority="70" SemiHidden="false"
UnhideWhenUsed="false" Name="Dark List Accent 5"/> <w:LsdException Locked="false" Priority="71" SemiHidden="false"
UnhideWhenUsed="false" Name="Colorful Shading Accent 5"/> <w:LsdException Locked="false" Priority="72" SemiHidden="false"
UnhideWhenUsed="false" Name="Colorful List Accent 5"/> <w:LsdException Locked="false" Priority="73" SemiHidden="false"
UnhideWhenUsed="false" Name="Colorful Grid Accent 5"/> <w:LsdException Locked="false" Priority="60" SemiHidden="false"
UnhideWhenUsed="false" Name="Light Shading Accent 6"/> <w:LsdException Locked="false" Priority="61" SemiHidden="false"
UnhideWhenUsed="false" Name="Light List Accent 6"/> <w:LsdException Locked="false" Priority="62" SemiHidden="false"
UnhideWhenUsed="false" Name="Light Grid Accent 6"/> <w:LsdException Locked="false" Priority="63" SemiHidden="false"
UnhideWhenUsed="false" Name="Medium Shading 1 Accent 6"/> <w:LsdException Locked="false" Priority="64" SemiHidden="false"
UnhideWhenUsed="false" Name="Medium Shading 2 Accent 6"/> <w:LsdException Locked="false" Priority="65" SemiHidden="false"
UnhideWhenUsed="false" Name="Medium List 1 Accent 6"/> <w:LsdException Locked="false" Priority="66" SemiHidden="false"
UnhideWhenUsed="false" Name="Medium List 2 Accent 6"/> <w:LsdException Locked="false" Priority="67" SemiHidden="false"
UnhideWhenUsed="false" Name="Medium Grid 1 Accent 6"/> <w:LsdException Locked="false" Priority="68" SemiHidden="false"
UnhideWhenUsed="false" Name="Medium Grid 2 Accent 6"/> <w:LsdException Locked="false" Priority="69" SemiHidden="false"
UnhideWhenUsed="false" Name="Medium Grid 3 Accent 6"/> <w:LsdException Locked="false" Priority="70" SemiHidden="false"
UnhideWhenUsed="false" Name="Dark List Accent 6"/> <w:LsdException Locked="false" Priority="71" SemiHidden="false"
UnhideWhenUsed="false" Name="Colorful Shading Accent 6"/> <w:LsdException Locked="false" Priority="72" SemiHidden="false"
UnhideWhenUsed="false" Name="Colorful List Accent 6"/> <w:LsdException Locked="false" Priority="73" SemiHidden="false"
UnhideWhenUsed="false" Name="Colorful Grid Accent 6"/> <w:LsdException Locked="false" Priority="19" SemiHidden="false"
UnhideWhenUsed="false" QFormat="true" Name="Subtle Emphasis"/> <w:LsdException Locked="false" Priority="21" SemiHidden="false"
UnhideWhenUsed="false" QFormat="true" Name="Intense Emphasis"/> <w:LsdException Locked="false" Priority="31" SemiHidden="false"
UnhideWhenUsed="false" QFormat="true" Name="Subtle Reference"/> <w:LsdException Locked="false" Priority="32" SemiHidden="false"
UnhideWhenUsed="false" QFormat="true" Name="Intense Reference"/> <w:LsdException Locked="false" Priority="33" SemiHidden="false"
UnhideWhenUsed="false" QFormat="true" Name="Book Title"/> <w:LsdException Locked="false" Priority="37" Name="Bibliography"/> <w:LsdException Locked="false" Priority="39" QFormat="true" Name="TOC Heading"/> </w:LatentStyles> </xml><![endif]--><!--[if gte mso 10]> <style>
/* Style Definitions */
table.MsoNormalTable
{mso-style-name:"Table Normal";
mso-tstyle-rowband-size:0;
mso-tstyle-colband-size:0;
mso-style-noshow:yes;
mso-style-priority:99;
mso-style-qformat:yes;
mso-style-parent:"";
mso-padding-alt:0cm 5.4pt 0cm 5.4pt;
mso-para-margin-top:0cm;
mso-para-margin-right:0cm;
mso-para-margin-bottom:10.0pt;
mso-para-margin-left:0cm;
line-height:115%;
mso-pagination:widow-orphan;
font-size:11.0pt;
font-family:"Calibri","sans-serif";
mso-ascii-font-family:Calibri;
mso-ascii-theme-font:minor-latin;
mso-fareast-font-family:"Times New Roman";
mso-fareast-theme-font:minor-fareast;
mso-hansi-font-family:Calibri;
mso-hansi-theme-font:minor-latin;}
</style> <![endif]--> </m:defjc></m:rmargin></m:lmargin></m:dispdef></m:smallfrac></div><span lang="EN">sumber : <span style="color: #0b5394;">http://brigittalala.wordpress.com/pesan-dan-kesan-mengikuti-pree-test-fisika/gelombang-elektromagnetik/<br />
<br />
</span></span><br />
<div class="MsoPlainText" style="line-height: 150%; margin: 0pt; text-align: justify;"><br />
</div><div class="MsoPlainText" style="line-height: 150%; margin: 0pt; text-align: justify;"><br />
</div></div>bungasprayogahttp://www.blogger.com/profile/07875445475070616173noreply@blogger.com0