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Professor
Sir John Ambrose Fleming
1849-1945 Inventor of the diode radio valve, pioneer in wireless telegraphy. He was a friend of this Observatory and lived in Sidmouth, 1926-1945
Christine Matthews on Geograph
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Colour:
This plaque is
green and red
Belgian Blue Stone
film cell
terracotta
purple
brushed metal
purple, white and green
stone
glass
green
clear
slate
red
yellow
bronze
pink
brown
silver
claret
orange
wood
black
white
red and black
blue
marble
maroon
brass
gold
grey
multicoloured
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Subject
Sir John Ambrose Fleming FRS
(1849-1945)
Fellow of the Royal Society
See also...
Spudgun67 on Wikimedia Commons
Sir Edward Frankland FRS 1825-1899, Chemist & Sir John Ambrose Fleming FRS 1849-1945, ...
David Stowell on Geograph