John Ambrose Fleming Biography

Historical biography and chronological timeline for John Ambrose Fleming, based on 2 World History Database records associated with Great Britain.

2 records1904–19042 events1 places

Chronological biography

1904

Invention of Thermionic Valve1904

Science / Technology · London

Invents the Thermionic Valve

Vacuum Diode1904

Science / Technology · Engineer · London

Invents the thermionic vacuum diode, controlling electron flow from a heated cathode to an anode for radio detection and rectification.

Titles and roles

Engineer

Record provenance

This biography is assembled from World History Database records filtered by country and personal-name fields. Exact duplicate display records are removed. The database is an index rather than a complete narrative biography; formal research should verify entries against relevant primary or specialist sources.