Crystals with Tyler Thrasher
SciShow Tangents
The Seiko Crystal Chronometer QC 951
The Seiko crystal chronometer QC 951 was used in the Olympics to time longer races. These watches work by using a small piece of quartz as a tuning fork so that as an electric current passes through the crystal, the frequency of the quartz's vibrations gets converted into time. Almost 1921 feels like just a good year for some crazy crystal timekeeping shit to happen.
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