Escaping Photon Used to Challenge Energy-Time Uncertainty
Einstein argued that measuring the mass loss of a timed photon box could in principle determine both the photon's energy and its emission time more precisely than quantum uncertainty allowed.
Historical biography archive · Updated 2026-11-03
Albert Einstein Biography and Timeline
Follow Albert Einstein through 2 dated historical records for Belgium.
Albert Einstein, historical timeline
A chronological timeline drawn from matching World History Database records.
2Distinct records
1 of 1Page
1930–1930Years on this page
1930
Photon Box Thought Experiment Presented
At the Solvay Conference Einstein proposed a box-and-clock thought experiment intended to challenge the energy-time uncertainty relation by weighing a box before and after a photon escaped.
Records, sources and methodology
These dates and descriptions come from the historical_events database. Exact duplicate records have been collapsed. Names are grouped by the country, Name 2 and Name 1 fields; records with missing Name 2 cannot be reliably assigned to an individual biography. Check the underlying sources before formal citation.