Frequency can be fourier-transformed into time and vice versa. They're inversely related.(adsbygoogle = window.adsbygoogle || []).push({});

In QM, momentum can be fourier-transformed into position and vice versa. But they're not necessarily inversely related. The uncertainty in time and the uncertainty in position merely have a lower bound.

So how do you determine how one variable can be fourier-transformed into another variable?

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# What properties determine whether one variable can be fourier-transformed into anothe

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