## Change in momentum

$\Delta p \Delta x\geq \frac{h}{4\pi }$

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### Change in momentum

If not given will we always have to us the equation with the greater (>) sign to find the change in momentum? or can we just use p=mv. Are they the same?

Chem_Mod
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### Re: Change in momentum

First, keep in mind that for Heisenberg's uncertainty principle, $\Delta$ means "indeterminacy in" or "Uncertainty in" NOT "change in". Generally, questions will ask for the minimum uncertainty, and so an equal sign can be used. But the formula itself does use a $\geq$ sign.

AnthonyDis1A
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### Re: Change in momentum

What does "minimum uncertainty" mean conceptually? Mathematically it's the minimum product of a particle's position and momentum, but what's the point in knowing an electron's minimum uncertainty?

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### Re: Change in momentum

It starts to matter as we research more into phenomenon of quantum mechanics and find uses for quantum mechanic application. This criterion sets a limitation to which scientists can achieve accuracy and applies to all other objects, not just electrons.