Physics Notes

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  • Created by: HeenaKhan
  • Created on: 17-05-15 16:46

1.1 Infrared Radiation

  • Infrared Radiation is energy transfer by electromagnetic waves.
  • All objects emit infrared radiation.
  • The hotter an object is the more infrared radiation it emits in a given time.
  • Remember that the transfer of energy by infrared radation does not involve particles.
  • Infrared waves are part of the electromagnetic spectrum. They are part of the spectrum just beyond visible red light. We can detect infrared radiation with our skin - it makes us feel warm. 
  • All objects emit (give out) infrared radiation.
  • The hotter an object is the more infrared radiation it emits in a given time.
  • Infrared radiation can travel through a vacuum, as in travelling through space. This is how we get energy from the sun.
  • Infrared Radiation: Elctromagnetic waves between visble light and microwaves in the elctromagnectic spectrum. 
  • Emit: Give out radiation.
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