stro·bo·scope /ˈstrobəˌskop/
 光測頻器;閃光燈


 Strob·o·scope n.
 1. An instrument for studying or observing the successive phases of a periodic or varying motion by means of light which is periodically interrupted.
 2. An optical toy similar to the phenakistoscope. See Phenakistoscope.

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 stroboscope
      n : scientific instrument that provides a flashing light
          synchronized with the periodic movement of an object; can
          make moving object appear stationary [syn: strobe, {strobe
          light]