De Forest audion 1906-1915
- Made:
- 1906-1915 in unknown place
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LicenseThis image is released under a CC BY-NC-SA 4.0
Licence
Buy this image as a print
BuyLicense this image for commercial use at Science and Society Picture Library
LicenseThis image is released under a CC BY-NC-SA 4.0
Licence
Buy this image as a print
BuyLicense this image for commercial use at Science and Society Picture Library
License
Science Museum Group Collection
© The Board of Trustees of the Science Museum
Science Museum Group Collection
© The Board of Trustees of the Science Museum
Science Museum Group Collection
© The Board of Trustees of the Science Museum
De Forest Audion, unknown maker, 1906-1915.
In October 1906 American engineer Lee de Forest announced the invention of the audion at a meeting of the American Institute of Electrical Engineers. De Forest had added a ‘grid’ to the thermionic valve which John Ambrose Fleming had invented and shared with the Marconi Company in 1904. De Forest’s innovation enabled the device to not only detect radio signals, but also amplify them. This was a crucial step in the development of radio engineering. A bitter battle over patents and credit for the devices followed between Fleming and de Forest.
Details
- Category:
- Electronic Components
- Object Number:
- 1960-7
- Materials:
- glass and metal (unknown)
- Measurements:
-
overall: 50 mm x 200 mm x 100 mm,
- type:
- thermionic valve
- credit:
- Donated by Capt. H.J. Round.
