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Text File  |  1992-09-02  |  261b  |  8 lines
  1. In physics, a fundamental constant (symbol h)
  2. that is the energy of one quantum of
  3. electromagnetic radiation (the smallest
  4. possible `packet' of energy; see quantum
  5. theory) divided by the frequency of its
  6. radiation. Its value is 6.626196 x 10^-34
  7. joule seconds.
  8.