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Text File  |  1995-11-04  |  580b  |  17 lines
  1. electromagnetic radiation: All forms
  2. of light. Electromagnetic radiation can
  3. be described by three basic properties:
  4. speed, wavelength, and frequency.
  5. The speed of light is a universal
  6. constantΓÇönothing can travel faster
  7. than the speed of light. When in a
  8. vacuum all electromagnetic radiation
  9. travels at exactly the speed of light.
  10. There is a simple relation between
  11. wavelength and frequency: when
  12. they are multiplied, the sum must
  13. equal the speed of light. The energy
  14. carried by a given type of
  15. electromagnetic radiation depends
  16. on the wavelength, with shorter
  17.