# Formula: Heisenberg's Uncertainty Relation Location uncertainty    Pulse uncertainty    Planck's Constant

## Location uncertainty

Unit
The position $$x$$ of a particle is in the range between $$x-\Delta x$$ and $$x+\Delta x$$ because of the measurement uncertainty.

## Pulse uncertainty

Unit
According to the uncertainty relation, the momentum $$p$$ of the particle must have at least the deviation $$\Delta p$$ which is given in principle by $$\Delta x$$ and the Planck's constant $$h$$. The momentum of the particle lies in the interval between $$p-\Delta p$$ and $$p+\Delta p$$ and this interval cannot be decreased.

## Planck's Constant

Unit
Planck's is a physical constant (of quantum mechanics) and has the value: $$h ~=~ 6.626 \cdot 10^{-34} \, \text{Js}$$.

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