Watch this…

Particle physics is sometimes described as crashing Swiss watches together, looking at the fragments, and then trying to figure out how the watches were put together in the first place. It is a spiffy analogy. (Photo courtesy of Fermilab)

But, how are watches actually put together?  First up, a gem of a film issued in 1949 by the Hamilton Watch Company.  The big watch model is a marvel and the stop-action sequence of a pocketwatch disassembling and reassembling itself is a delight.

 

And here is Prof. Bill Hammack of the University of Illinois explaining the common quartz-crystal watch of today.

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