Permanent historical factsheet

Invention of Thermionic Valve

Great Britain · Science / Technology. Chronological records rendered directly from the World History Database.

1Records
1904Date range
1Named people
1Places

Chronological records

1904

John Ambrose Fleming1904

London · Science / Technology

Invents the Thermionic Valve

Names involved

John Ambrose Fleming

Provenance

This factsheet is generated from stored World History Database records matching the country, broad category, detailed category and exact Event value shown above. Duplicate display records are collapsed; database wording is otherwise preserved. Source provenance varies by record, so formal academic citation should be checked against the relevant primary source, archive or specialist historical reference.