Electromagnetic Radiation What is electromagnetic radiation l Transverse

What is electromagnetic radiation ? l Transverse waves that transfer energy by radiation l

How to Interpret the Electro. Magnetic Spectrum As the wavelength increases the frequency decreases

Radio Waves l Electromagnetic radiation which has the lowest frequency, the longest wavelength, and

Microwaves l Electromagnetic radiation which has a longer wavelength (between 1 mm and 30

Infrared l We often think of this as being the same thing as 'heat',

Visible Light l Electromagnetic radiation at wavelengths which the human eye can see. We

Why should you not buy red scuba equipment?

Ultraviolet or UV l Electromagnetic radiation at wavelengths shorter than the violet end of

X-Ray l Electromagnetic radiation of very short wavelength and very high-energy; X-rays have shorter

Gamma Rays l The highest energy, shortest wavelength electromagnetic radiations. Usually, they are thought

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Electromagnetic Radiation

What is electromagnetic radiation ? l Transverse waves that transfer energy by radiation l Examples: Gamma Rays, Visible Light, Infrared, Ultraviolet, Radio Waves, X-rays and Microwaves

How to Interpret the Electro. Magnetic Spectrum As the wavelength increases the frequency decreases l Increased frequency means more energy l

Radio Waves l Electromagnetic radiation which has the lowest frequency, the longest wavelength, and is produced by charged particles moving back and forth; the atmosphere of the Earth is transparent to radio waves with wavelengths from a few millimeters to about twenty meters.

Microwaves l Electromagnetic radiation which has a longer wavelength (between 1 mm and 30 cm) than visible light. Microwaves can be used to study the Universe, communicate with satellites in Earth orbit, and cook popcorn.

Infrared l We often think of this as being the same thing as 'heat', because it makes our skin feel warm. In space, IR light maps the dust between stars. http: //www. spitzer. caltech. edu/video-audio/668 -ssc 2003 -06 v 3 -Messier-81

Visible Light l Electromagnetic radiation at wavelengths which the human eye can see. We perceive this radiation as colors ranging from red (longer wavelengths; ~ 700 nanometers) to violet (shorter wavelengths; ~400 nanometers. )

Why should you not buy red scuba equipment?

Ultraviolet or UV l Electromagnetic radiation at wavelengths shorter than the violet end of visible light; the atmosphere of the Earth effectively blocks the transmission of most ultraviolet light.

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X-Ray l Electromagnetic radiation of very short wavelength and very high-energy; X-rays have shorter wavelengths than ultraviolet light but longer wavelengths than gamma rays. http: //chandra. harvard. edu/photo/2005/gctr_bin/animations. html

Gamma Rays l The highest energy, shortest wavelength electromagnetic radiations. Usually, they are thought of as any photons having energies greater than about 100 ke. V. (It's "gamma-ray" when used as an adjective. )