Science

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Author:
valerie_hsu
ID:
16201
Filename:
Science
Updated:
2010-04-26 00:16:30
Tags:
Probe Light
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Description:
Light
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  1. luminous eg. lamp
    source of light energy
  2. non-luminous eg. desk, moon, mirror
    reflects light
  3. incandescence eg. traditional light bulbs, kerosene fuel lamp
    light that is emitted for a high temperature source
  4. wire part of light bulb
    tungsten filament
  5. phosphorescence eg. glow in the dark
    phosphors absorb light energy
  6. electric discharge eg. neon light signs
    electricity passes through a gas filled tube
  7. fluorescence eg. tube lights in classroom
    phospher coating mecury vapors creates UV energy
  8. Chemiluminescence eg. glow sticks
    mixing of chemicals
  9. bioluminescence eg. jelly fish, eel, firefly
    occurs naturally in certain plant and animals
  10. translucent
    allow some light through
  11. opaque
    allow no light to pass through
  12. transparent
    allow all light to pass through
  13. Visible Spectrum
    ROYGBIV
  14. When white light passes through ____ you get ROYGBIV
    Spectrum
  15. Who discovered ROYGBIV?
    Isaac Newton in 1666
  16. Electromagnetic spectrum
    range of radiant energies (measured in waves)
  17. top point of wave
    crest
  18. lowest point of wave
    trough
  19. waves is measured in
    hertz (Hz)
  20. High Frequency
    lots of waves
  21. low frequency
    less waves

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