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Fleming Valve, by J.A. Fleming, English, c. 1889

preview image for Fleming Valve, by J.A. Fleming, English, c. 1889
Inventory Number: 80572
Object Type:
Persons: Sir John Ambrose Fleming
Date Created: c. 1889
Place Created: England United Kingdom Europe
Accession Number: 2004-9/582
Brief Description: Experimental Fleming Valve with single vertically-mounted nickel-plated flat anode in single-loop filament, on polished black ebonite base, with ring-turned wood plinth, and three wires forming legs.

Marconi hired the electrical engineer and Professor at University College London, John Ambrose Fleming and his work on thermionic valves would be crucial to advances in tuning and so to the further development of radio. This valve is probably one Fleming had used for earlier experiments in 1889-90, but which he later applied to the application of valves in the detection of radio waves.
Primary Inscriptions: None
Provenance: Presented by the Marconi Corporation.
Collection Group: Marconi Collection
Material(s): Glass
nickel
steel
ebonite
wood.
Dimensions:
Height Width Depth Diameter Unit
239 110 mm

Narratives

Image with multimedia irn 39904Image with multimedia irn 39905

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