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in heisenbergs uncertainty principle, how do you know when to use hbar, h, h/2 or hbar/2?

thanks

thanks

- Thread starter lavster
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- #1

- 217

- 0

in heisenbergs uncertainty principle, how do you know when to use hbar, h, h/2 or hbar/2?

thanks

thanks

- #2

G01

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[tex]\Delta x \Delta p \geq \frac{\hbar}{2}[/tex]

Sometimes people will drop the factor of 1/2 or leave out the 2 pi and write h instead of hbar.

It all depends on what you're looking for. If you need an exact value for the uncertainty, you should use [itex]\hbar/2[/itex].

If you're only only concerned about getting an order of magnitude estimate, dropping the factor of 2, 2 pi, or both, won't affect anything.

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