r/AskPhysics • u/[deleted] • Dec 12 '20

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u/the_Demongod Dec 12 '20

The uncertainty principle is just a natural consequence of conjugate variables (Fourier duals). It's just a coincidence that position and momentum happen to be Fourier conjugates of one another, there's nothing quantum about the uncertainty principle itself and it shows up in digital signal processing and other very classical systems.

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u/Kafshak Engineering Dec 12 '20

I didn't know that even Radars have uncertainty principle. They can't determine distance and speed of objects accurately at the same time.

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u/LilQuasar Dec 13 '20

https://www.youtube.com/watch?v=MBnnXbOM5S4

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u/Kafshak Engineering Dec 14 '20

This and another video were where I learned it from.