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ULTRAVIOLET LET THERE BE (INVISIBLE) LIGHT!

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!

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  1. ULTRAVIOLETLET THERE BE (INVISIBLE) LIGHT! A Presentation Brought To You By REJ Visit www.worldofteaching.com For 100’s of free powerpoints

  2. Ultraviolet Radiation • between 400-100 nm on the spectrum. • UV part of spectrum divided into regions. • Produced by high temperature continuous prism

  3. 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

  4. The Ozone Layer • Stratosphere • 10-30 Miles • UV-A, UV-B, UV- C • 99% • Telescopes in space • The future

  5. Practical Uses • Black Light • Authenticate • Fluorescent Lamps • Spectroscopy • Minerals (GFP) • Photolithography • Electrical Insulation • Sterilization • Water

  6. Used since the 1960s Copernicus Hopkins UV telescope UV in Astronomy

  7. Diagram of HUT

  8. UV’s Effects on Human Body • Minor effects on skin • Cancer • Eye problems • Vitamin D

  9. THE END

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