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Highest energy

Blocked from Earth’s surface by atmosphere

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Higher energy than light waves

Can cause skin cancer and blindness in humans

Used in tanning beds and sterilizing equipment

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High energy waves

Used in medicine, industry and astronomy

Can cause cancer

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The portion of the electromagnetic spectrum that human eyes can detect

ROY G BIV (red, orange, yellow, green, blue, indigo, violet)

Which color has the lowest frequency?

red has the lowest frequency – violet the highest

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Invisible electromagnetic waves that are detected as heat

Can be detected with special devices such as night goggles

Used in heat lamps

Higher energy than microwaves but lower than visible light

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Only radio waves are longer

Wavelength 1 x 10-1  m to 1 x 10 - 4m (1 m to 0.001 m)

used for communication, medicine and consumer use (microwave ovens)

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Low energy waves with longest wavelengths

Includes FM, AM, radar and TV waves

Wavelengths of 1 m (10 -1 m) and longer

Low frequency

Used in many devices such as remote control items, cell phones, wireless devices, etc.

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The electromagnetic spectrum is the complete spectrum (or continuum) of all forms of “light”