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by seabass-labrax
1118 days ago
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Good point, and thinking about this further makes me realise just how stable the frequency of mains power is! Also, in the museum at the Greenwich Royal Observatory, I saw an exhibit of a clock which was synchronised with regular pulses in the mains electricity, which I believe were in addition to the usual 50Hz AC. However, I don't know if the power grid still has such a pulse in Britain, or whether there was/is a similar system in the USA. |
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