更一般的不确定性原理：从傅里叶变换说起

3Blue1Brown shows how the uncertainty principle arises from Fourier transforms. A wave packet cannot be narrow in both position and frequency, so the principle is a property of waves rather than of measurement.

Why HN likes it: HN recommends it as the clearest visual explanation that uncertainty is intrinsic to waves, separate from measurement disturbance.

“The clearest, most intuitive explanation of the Fourier Uncertainty Principle that I have come across is by Grant Sanderson of 3Blue1Brown.”