Infrared Rays

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Infrared Rays
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Discovery

• 1800 by Sir Frederick William Hershel
• Thought colors were associated with heat
• Used 3 thermometers with blackened bulbs to
  measure heat of different colors
• Studied beyond red light
• Discovered below red, or infrared, light had
  radiation

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Sir Frederick William Herschels Process of
Discovery

• Prism Mirror

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History

• 1800 Discovered
• 1878 Bolometer is developed by Samuel Pierpoint
  Langley
• 1948 Moon Dust
• 1961 Germanium Bolometer is developed by Frank
  Low
• These all led to todays uses

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Todays Usage

• Heat Foods Industry
• TV Remote Controls
• Space Usage
• Weather/Clouds
• Medicine
• Science
• Consumer Goods

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Properties

• Travels at the speed of light
• Wavelengths smaller waves than microwaves
• Frequencies higher frequency than microwaves

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Pictures
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Infrared Radiation

• Primary source of infrared radiation is heat or
  thermal radiation.
• This radiation is produced by the motion of
  atoms.
• More movement More infrared radiation
• Anything above absolute 0
• emits infrared radiation

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Future

• How planets, stars, galaxies are formed
• Finding new possible life on other planets