ACCURATE CLOCKS
Construction in Germany (Received January 30, 11.30 p.m.) Berlin, January 30. The. Reichstag Institute of Physics has constructed what are claimed to be the-four most accurate clocks in rhe world. They are operated by electrical-ly-produced vibrations from quartz crystal and can deviate from the right time to the extent of only one twothousandth part of a second every halfyear. The crystal is hung in a vacuum tube inside a double copper box containing air, aluminium and feathers, which keep the temperature unvarying.
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Dominion, Volume 28, Issue 108, 31 January 1935, Page 9
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84ACCURATE CLOCKS Dominion, Volume 28, Issue 108, 31 January 1935, Page 9
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