Hi Some things change, some things don't. A few interesting things:
1) The film was made after they figured out that final etch was a key step. Earlier in the war - not so much etch. 2) I'll *guarantee* that the workers in the pictures didn't show up for work on a normal work day dressed like that. 3) I *think* some of that gear is still in use at work ….. Bob On Jul 31, 2013, at 5:59 PM, Alberto di Bene <[email protected]> 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. > > http://archive.org/details/6101_Crystals_Go_to_War_01_20_16_21 > > 73 Alberto I2PHD > > > > _______________________________________________ > time-nuts mailing list -- [email protected] > To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
