John G. King discusses concepts of time measurement and demonstrates devices used to measure and record time intervals from one second down to .0000000001 second, with possible extension by a further five places in certain cases. Points out the problem of verifying accuracy of a clock and considers briefly psychological time and the possibility of a limit to division of time.
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In ACMI's collection
Black and White
16mm film; Limited Access Print (Section 2)
16mm film; Access Print (Section 1)