EM radiation

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  • Created by: abic1
  • Created on: 03-05-16 17:41
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  • EM radiation
    • EM spectrum
    • Gamma, Xray, Ultraviolet, Light, Infrared, Microwaves, Radiowaves
    • radiation transfers energy in photons
    • photons are packets of energy
    • visible light is what can be detected by our eyes
    • EM radiation is emitted from a source
    • the frequency of thermal energy increases with temperature
    • all EM radiation can travel through a vacuum
    • travels at the speed of light 300,000 km/s
    • EM radiation is transmitted, reflected and absorbed
    • transmitted means the radiation keeps going through the object
    • reflected means the radiation bounces back
    • absorbed means it's taken in
    • objects that absorb radiation are called detectors
    • intensity decreases as the distance from the source increases


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