What is an instrument?

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  • An instrument is any device employed to measure something
  • A spectrophotometer is a type of instrument.
  • A spectrophotometer should never be called a machine.
  • A machine is a device that does work.
  • Computers, cars, and back hoes are examples of machines, they are not instruments.
  • The word spectrum is singular, the word spectra is plural.
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