can stroboscope measure the frequency of light?
(Strobe Light, Strobo Scope, Nova Strobe) Stroboscopes or Strobe Lights use a variable frequency flashing light to visually freeze the motion of a rotating machine shaft or other vibrating part to determine its frequency in Hz, CPM, RPM, Timing or Phase. Stroboscopes may also be triggered by a balancing analyzer to determine phase angle for adding or subtracting weights.