Blank greetings card with envelope featuring:

Sir (John) Ambrose Fleming NPG x91858

© National Portrait Gallery, London

by Walter Benington, for Elliott & Fry

Physicist and electrical engineer. Born in Lancaster, Fleming studied at St John's College, Cambridge. Whilst Professor of Electrical Engineering at University College London (1885-1926), he invented the Thermionic Valve (1904), which became widely used in the rapidly developing world of television, radio and early computing. Fleming was also a pioneer in the application of electricity to heating and lighting on a large scale. He was knighted in 1929.

Card size: 125mm x 175mm

Images are printed in their original proportions, within a white border.