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The Knowledge of Science

Answer the following questions about the photons,lasers,etc..

The Knowledge of Science
  • 1 of 8:

    What are three types of lasers?

  • A) Gas, Metal Vapor, Rock
  • B) Pointer, Diode, CD
  • C) Diode, Inverted, Pointer
  • D) Gas, Solid State, Diode
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