UltraViolet

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Slide 1

Ultraviolet

LET THERE BE (INVISIBLE) LIGHT!

A Presentation Brought To You By REJ

Slide 2

Ultraviolet Radiation

between 400-100 nm on the spectrum.

UV part of spectrum divided into regions.

Produced by high temperature continuous prism

Slide 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

Slide 4

The Ozone Layer

Stratosphere

10-30 Miles

UV-A, UV-B, UV- C

99%

Telescopes in space

The future

Slide 5

Practical Uses

Black Light

Authenticate

Fluorescent Lamps

Spectroscopy

Minerals (GFP)

Photolithography

Electrical Insulation

Sterilization

Water

Slide 6

UV in Astronomy

Used since the 1960s

Copernicus

Hopkins UV telescope

Slide 7

Diagram of HUT

Slide 8

Slide 9

Slide 10

UV’s Effects on Human Body

Minor effects on skin

Cancer

Eye problems

Vitamin D

Slide 11

THE END