Electromagnetic Waves

Electromagnetic waves

Unlike mechanical waves, electromagnetic waves don't require a medium to travel, also they are created by the vibration of charged particles.


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The Electromagnetic Spectrum

The electromagnetic spectrum is the range of wavelengths or frequencies over which electromagnetic radiation extends. The Electromagnetic Spectrum consists of Gama Rays, X-Rays, Ultraviolet Radiation, Visible light, Infrared Radiation, and Radio Waves.



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The Electromagnetic Spectrum

Gama Rays

Gama Rays have wavelengths of < 0.01 nano-meters. Some of their uses include, killing Cancer cells, and sterilizing medical equipment



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X-rays

X-rays have wavelengths from 0.01 – 10 nano-meters. They are used to produce photos of bones, also to detect events in different galaxies



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Ultraviolet radiation

Ultraviolet radiation has wavelengths of 10 – 310 nano-meters. It is used to kill bacteria on clothes hung outside, also to stimulate the production of vitamin D in ones body.



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Visible Light

Visible light has wavelengths of 400 – 700 nano-meters. Visible light is used to see colors, also used for light bulbs.



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Infrared Radiation

Infrared Radiation has wavelengths of 710 nano-meters – 1 millimeter. Infrared Radiation is often used in night vision goggles, and also for thermal imaging.



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MicroWaves

Micro Waves have wavelength between 1 mm and 30 cm. They are used to cook foods (like a microwave oven) they are also used in cellphones.



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Radio Waves

Radio Waves have wavelengths longer than 1 millimeter. They are mainly used for communications such as radios and TVs



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