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why use computers to time races?

Because they're better at it!

Computers can react many times faster than people. This enables them to record times in a race very accurately.

In sports such as downhill skiing or motor racing, a tenth of a second can separate winning and coming second.

Try it! Click the stopwatch when the skier passes the flags and see how close you get to the computer's accurate time.

try it!

EPSRC