Glossary · term

Quantum

Quantum

Aliases
quantised, quantized, quanta
Domain
Quantum

Definition

The smallest possible unit of something — energy, charge, angular momentum. Planck's 1900 proposal that energy comes in packets of hf, made to fit a graph, started everything.

Open on the Glossary shelf — the interactive card, the filters, and everything alongside it.

From the Glossary database in Notion, last edited 2026-08-17. This page is the row, rendered by the build; nothing on it is written by hand.