# Time And Clocks

In this classic Physical Science Study Committee (PSSC) film, MIT professor John G. King discusses the concept of time and shows various devices used to measure and record time intervals from 1 second down to 10 seconds. He points out that the accuracy of a clock can be judged only by comparison with another clock. The question of what time is, psychologically and physically, is raised briefly as well as the question of a possible limit to the subdivision of time. The film features noted stop-motion photographer Dr. Harold "Doc" Edgerton. Cinematography by Bert Van Bork. For more on PSSC films, visit http://www.afana.org/psscfilms.htm

- Kind: Educational
- Year: 1959
- Runtime: 27 min
- By: Milan Herzog; Physical Science Study Committee. Physics.; Educational Services, Inc.; Modern Talking Picture Service, inc.
- Genres: Education
- Archive: [Internet Archive](https://archive.org/details/TimeAndClocks)
- Licence or status: none stated by the archive
- Who can watch: Kids profiles and older (the archive gives no rating; placed by Invisible Network from its collection and subjects)

[Watch now](https://invisiblenetwork.ai/watch/archive/ia/TimeAndClocks?play=1)