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Physics & Quantum · Recorded milestone

Quantum hypothesis

Recorded year1900

Max Planck proposes that energy comes in discrete quanta.

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Built on

No connections of this kind are recorded.

Led to

Special relativityRecorded · 1905enables
Quantum mechanicsRecorded · 1925enables
XerographyRecorded · 1938enables
Office photocopierRecorded · 1959enables

Sources & evidence

Additional source

Dataset updated 2026-10-18. This individual record has not been separately re-reviewed.