Topic Summaries

Absorption and emission of infrared radiation

GCSE > Physics > WJEC > GCSE Physics Topic Summaries > Absorbing and emitting infrared radiation > Absorption and emission of infrared radiation
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Charge, current, and electric fields

Pressure

Light, colour, and ray diagrams

Science skills: Measuring results

  • All bodies will absorb and emit infrared radiation. This is true for objects of any temperature, but hotter objects will emit more radiation per second.
  • At high temperatures, the object will also emit red visible light. As the temperature increases, it also emits light of shorter wavelengths, eventually emitting white light.

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