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Heisenberg Uncertainty Calculator

Compute the uncertainty product Δx·Δp ≥ ħ/2.

Input Data

Position Uncertainty
m

Results

Momentum uncertainty Δp ≥ ħ/(2Δx).
0kg·m/s

At a glance:Δx·Δp ≥ ħ/2 (ħ = h/2π). Complements de-broglie-wavelength and planck-constant.

Formula

Δx·Δp ≥ ħ/2.

$$\Delta x \cdot \Delta p \ge \dfrac{\hbar}{2},\quad \Delta p_{\min} = \dfrac{\hbar}{2\,\Delta x}$$

How to Use

  1. Enter Δx (or Δp).
  2. The tool returns the other uncertainty.

Case Studies

Δx=1e-10

Δp ≥ 5.27e-25 kg·m/s.

FAQ

What is ħ?

Reduced Planck constant ≈ 1.055e-34 J·s.

Related Tools

References

Content review: Calculatorism Science Team. Results are for reference only; please refer to the relevant authorities for the official figures.

Found a problem with the results?

If this calculator's result is wrong, or you have any question about the calculation logic, please let us know. You are viewing:Heisenberg Uncertainty Calculator(/physics/heisenberg-uncertainty)。