Equations · equation

Heisenberg Uncertainty Principle

Quantum · 1927

Equation: Δx·Δp ≥ ℏ/2
Field: Quantum
Named After: Werner Heisenberg
Symbols: Δx uncertainty in position · Δp uncertainty in momentum · ℏ reduced Planck constant
Year: 1927

Significance

Position and momentum cannot both be pinned down — sharpen one and the other blurs. Not a limit of instruments but of nature itself: it keeps electrons from collapsing into nuclei and gives atoms their size.

Timeline

Theories

Quantum Gravity Copenhagen Interpretation Quantum Mechanics

Related

No-Cloning Theorem Gaussian Beam Divergence Chandrasekhar Limit Fourier Transform

Constants

Reduced Planck constant

Required By

Chandrasekhar Limit

Referenced by

constant

Reduced Planck constant

equation

Chandrasekhar Limit Fourier Transform Gaussian Beam Divergence No-Cloning Theorem

event

theory

Copenhagen Interpretation Quantum Gravity Quantum Mechanics

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From the Equations database in Notion, last edited 2026-08-15. This page is the row, rendered by the build; nothing on it is written by hand.