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ULTRAVIOLET LET THERE BE (INVISIBLE) LIGHT!. A Presentation Brought To You By REJ. Visit www.worldofteaching.com For 100’s of free powerpoints. Ultraviolet Radiation. between 400-100 nm on the spectrum. UV part of spectrum divided into regions.

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ultraviolet let there be invisible light
ULTRAVIOLETLET THERE BE (INVISIBLE) LIGHT!

A Presentation Brought To You By REJ

Visit www.worldofteaching.com

For 100’s of free powerpoints

ultraviolet radiation
Ultraviolet Radiation
  • between 400-100 nm on the spectrum.
  • UV part of spectrum divided into regions.
  • Produced by high temperature continuous prism
ultraviolet the past
Ultraviolet: The Past
  • Johann Wilhelm Ritter (1801)
    • Silver Chloride
  • Melloni and Becquerel (1842)
  • 1920’s: Balloon’s
  • 1946: Rocket Man
  • 1962: Orbiting Solar Observatory (NASA)
    • First Extreme Data Collection.
  • 1978: International Ultraviolet Explorer
  • 1992: Extreme Ultraviolet Explorer
the ozone layer
The Ozone Layer
  • Stratosphere
    • 10-30 Miles
  • UV-A, UV-B, UV- C
    • 99%
  • Telescopes in space
  • The future
practical uses
Practical Uses
  • Black Light
    • Authenticate
  • Fluorescent Lamps
  • Spectroscopy
  • Minerals (GFP)
  • Photolithography
  • Electrical Insulation
  • Sterilization
  • Water
uv in astronomy
Used since the 1960s

Copernicus

Hopkins UV telescope

UV in Astronomy
uv s effects on human body
UV’s Effects on Human Body
  • Minor effects on skin
  • Cancer
  • Eye problems
  • Vitamin D