Equations · equation

Planck–Einstein Relation

Quantum · 1900

Equation: E = hν
Field: Quantum
Named After: Max Planck · Albert Einstein
Symbols: E photon energy · h Planck constant · ν frequency of light
Significance: Light comes in packets whose energy scales with frequency — the crack in classical physics that opened into quantum theory.
Year: 1900

Skills

Building a Circuit on a Breadboard

Timeline

Electron–Positron Annihilation Oxygenic Photosynthesis

Theories

Quantum Mechanics Wave–Particle Duality Bohr Model of the Atom Quantum Hypothesis

Machines

Photovoltaic Cell

Related

De Broglie Wavelength Josephson Effect Eyring Equation Planck's Law Rydberg Formula Bohr Model Energy Levels

Instruments

Chandra X-ray Observatory

Constants

Planck constant

Requires

Elements

Referenced by

constant

Planck constant

element

equation

Bohr Model Energy Levels De Broglie Wavelength Eyring Equation Josephson Effect Planck's Law Rydberg Formula Wave Speed

event

Electron–Positron Annihilation Oxygenic Photosynthesis

instrument

Chandra X-ray Observatory

machine

Photovoltaic Cell

skill

Building a Circuit on a Breadboard

theory

Bohr Model of the Atom Quantum Hypothesis Quantum Mechanics Wave–Particle Duality

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From the Equations database in Notion, last edited 2026-08-26. This page is the row, rendered by the build; nothing on it is written by hand.