So far as I can tell this has been happening ever since the invention of AC! A neat trick that the electricity providers use/used to use is to change the frequency of the AC fractionally…hoping that nobody would notice that their clocks were off slightly.
So far as I can tell this has been happening ever since the invention of AC! A neat trick that the electricity providers use/used to use is to change the frequency of the AC fractionally…hoping that nobody would notice that their clocks were off slightly.