Early in the film, when Turing explains the importance of coded German radio messages, there is a brief scene of a hand tapping out a message in code on a Morse key. The method shown is not how a Morse key is used. Rather than using the forefinger alone, where the finger only touches the knob of the key on the down-stroke, the forefinger should never leave the knob at all. The thumb and middle finger should hold the knob lower down. Thus the thumb and two fingers hold the knob permanently with the key operated by the action of the whole fist, not just by one finger. Also, the gap between the key contacts is far too large. This slows down the maximum speed at which messages can be sent. During wartime, messages would have been fast and short in order to reduce the chance of their being intercepted by the opposing side.
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05/03/2025 alle ore 08:21
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