Fleming's oscillation valve, 1904.
4 0 c m
actual image size: 26cm x 32cm

Fleming's oscillation valve, 1904.

© Science Museum / Science & Society Picture Library


Replica of the original oscillation valve made by John Ambrose Fleming (1849-1945), an English physicist and electrical engineer. As well as being a pioneer in the application of electricity to lighting and heating on a large scale, Fleming invented the thermionic diode or valve. His invention was a major step forward in wireles technology as it was considerably more efficient as a radio wave detector than coherers or magnetic detectors. Valves became fundamental components in radios, as well as television sets and computers for 50 years, before being superseded by the transistor.

Image Ref.


buy a print

Select size
Select finish
How many prints?

buy a framed print

buy a canvas

buy a framed canvas