Heisenberg Uncertainty Principle - h/(4.Phi) versus h/(2.Phi)

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Heisenberg Uncertainty Principle - h/(4.Pi) versus h/(2.Pi)

What's the reason behind the factor 2 in the way some books/papers present Heisenberg Uncertainty Principle?
h/(4.Pi) versus h/(2.Pi)
When in history did this discrepancy arise and who was responsible for that?
Ultimately, which figure should we use when we are solving HUP problems?
 
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I think you mean [itex]h/4\pi[/itex] and [itex]h/2\pi[/itex]. I would refer you to http://en.wikipedia.org/wiki/Uncertainty_principle which provides an excellent description of the general uncertainty principle and also explains why the two reults are often quoted. The more correct one is [itex]h/4\pi[/itex].
 
  • #3
dextercioby
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The correct one is with [tex] \frac{\hbar}{2} [/tex] as it can be shown starting with the general uncertainty relations.

Any other constant is incorrect.

Daniel.
 
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