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2.04 EM Spectrum - The Non-Visible
vocab for the non-visible EM spectrum
8
Physics
9th Grade
07/10/2019

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Term
electromagnetic spectrum
Definition
Range of wavelengths (or frequencies) over which electromagnetic radiation extends
Term
gamma rays
Definition
Electromagnetic waves with the highest energy, highest frequency and shortest wavelength

Byproduct of nuclear reactions

VERY harmful
Term
x-rays
Definition
Electromagnetic waves with high energy, high frequency and short wavelengths

Between gamma rays and ultraviolet

Useful in scanning for broken bones

Can be harmful in high doses
Term
ultraviolet
Definition
Electromagnetic waves with high energy, high frequency and short wavelengths

Between x-rays and visible light

Can cause skin cancer
Term
visible light
Definition
Electromagnetic waves which can be detected by the human eye

Medium energy, medium frequency and medium wavelengths (400 to 700 nanometers, nm)

Between ultraviolet and infrared
Term
infrared
Definition
Electromagnetic waves with low energy, low frequency and long wavelengths

Between visible light and microwaves

Associated with heat – basis for night vision technology
Term
microwaves
Definition
Electromagnetic waves with low energy, low frequency and long wavelengths

Between infrared and radio waves

Important in cell phone technology
Term
radio waves
Definition
Electromagnetic waves with the lowest energies, lowest frequencies and longest wavelengths

Basis of radio technology as well as TV antennae
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