Tuesday, August 19, 2008

Time Flies Like an Arrow

...and fruit flies like a banana (OK, it's an old joke, but I'm a geezer).

Today we learned to use the CPO digital timers and photo gates. Students learned how to operate a single photogate and tandem photogates. The students discovered that an object must be large enough to completely sever the photobeam in order to start or stop the interval clock.

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