Hot-Cathode X-Ray Tube
Introduces a high-vacuum X-ray tube with a heated tungsten cathode that supplies a controllable stream of electrons.
Historical biography archive · Updated 2026-11-03
William David Coolidge Biography and Timeline
Follow William David Coolidge through 1 dated historical records for United States of America.
William David Coolidge, historical timeline
A chronological timeline drawn from matching World History Database records.
1Distinct records
1 of 1Page
1913–1913Years on this page
1913
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.