Quote:
Originally Posted by Fred Brackin
In 3e yes (1950). In 4e not so much (1940). I'm not sure if anything major other than crude radar marks the 1940 date. IMHO when they changed the TL6 date to 1880 they went too early on that too.
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1940 is decent, working, military radars. Primitive but useful ones date from the 30s.
As for jets, 1940 is just about the point flight-worthy jets started being produced, and the mid-point of the first turboprop's production run.
It's also the point where penicillin was shown to be producible in useful quantities, though mass production didn't start for a couple of years.