|
Date: |
|
Description: | none MANU Unsigned. 1904 DES FLEMING,John,Ambrose,Sir 1904 University College, Gower Street, London England This is a three carbon filament double diode valve invented by John Ambrose Fleming in 1904. This version, mentioned in his provisional specification, is not sufficiently described and it is not entirely clear as to how it was used but presumably the two outer filaments were heated. | License: | http://www.hmag.gla.ac.uk/spirit/rights/ | Publisher: | Hunterian Museum and Art Gallery, University of Glasgow | Rights holder: | Hunterian Museum and Art Gallery, University of Glasgow | Subjects: | SCIENTIFIC COLLECTION : | Source: | Hunterian Museum | Creator: | Hunterian Museum and Art Gallery, University of Glasgow | Identifier: | http://www.huntsearch.gla.ac.uk/cgi-bin/... | Language: | en-GB | Go to resource |
|
|