Sujet

Fleming's First Vacuum Tube

Légende

England: 1904
Early types of John Ambrose Fleming's two electrode valve, which was the first vacuum tube.

Date

01 janv. 1904

Crédit

Photo12/Underwood Archives/UIG

Notre référence

UMG20A21_440

Model release

Non

Property release

NA

Licence

Droits gérés

Format disponible

48.4Mo (6.6Mo) / 40.6cm x 29.9cm / 4800 x 3528 (300dpi)

Mots clés

vintage 1900's 1900s 1904 B & W B&W England Europe United Kingdom black & white black and white communications electronics historic historical horizontal indoors inventions inventors no people photography radio equipment technology turn of the century vacuum tubes vintage