The Quick and Dirty on Photogates

The photogate is a timing device which is useful for measuring events which happen faster than you can time by hand.  It is also useful in determining the speed of many objects.

The photogate consists of an infrared diode and a photocell.  Timing occurs when the infrared beam between the diode and photocell is interrupted.  You canít see the beam, but it is there.  The numbers in the display show the time of the event in seconds.

Timing Modes

Using the Photogate

To determine speed

Measuring elapsed time of travel

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