[time-nuts] How quartz crystals are (were) fabricated
magnus at rubidium.dyndns.org
Fri Aug 2 11:27:50 EDT 2013
On 31/07/13 23:59, Alberto di Bene wrote:
> 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.
Nice video. Would be interesting to know what etching and neutralizing
agents where used, as well as the cooling and grinding agents. Also nice
to see the relatively low-tech they used with pencil markings.
Nice combination of techniques to get orientation and faults located.
The cut-angle for the GT-cut seemed to be well established in the
mechanics of the cutting tables.
Would be interesting to see a similar movie from a modern facility.
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