[time-nuts] How quartz crystals are (were) fabricated

Alberto di Bene dibene at usa.net
Wed Jul 31 17:59:44 EDT 2013


A really fascinating story in pictures of the preparation and manufacture of quartz crystals for radio communication.
Dating back to 1943... how times have changed...

Copied from another list.

http://archive.org/details/6101_Crystals_Go_to_War_01_20_16_21

73  Alberto  I2PHD





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