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Old 23rd Apr 2019, 9:27 am   #298
ColinTheAmpMan1
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Join Date: Jan 2012
Location: Wimbledon, London, UK.
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Default Re: Technology related anachronisms on TV and in films etc.

I saw the film "Red Joan" yesterday. It relates to a woman who gave British secrets on the making of the atomic bomb to the Russians, but was eventually found out when she was in her eighties.

There were a couple of scenes that struck me as being a little inaccurate. One was set in a physics lab at Cambridge University, where the woman in question was studying. She was using an enormous soldering iron to do some work on a Wheatstone bridge and was wearing welding goggles for some reason.

In another scene, she walks into an office where an important chap (subsequently to become her husband, I think) is sitting at a desk with a blackboard behind him. On the blackboard is a feasible-looking diagram of a triode valve circuit. What surprised me was that a cathode bypass capacitor was labelled in nF. This was before WW2 started and I recall capacitors only being labelled with pF or uF up to the sixties and possibly later.

Colin.
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