The thermionic valve makes possible the control of energy that is released when electricity is liberated from a metal. The thermionic valve is the radio valve - the forerunner to mini valves, thence the transistor.
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How to watch
Collection
In ACMI's collection
Credits
Collection metadata
ACMI Identifier
311929
Language
English
Subject categories
Agriculture, Business, Commerce & Industry → Valves
Educational & Instructional → Educational films
Educational & Instructional → Instructional
Mathematics, Science & Technology → Electricity
Mathematics, Science & Technology → Physics
Mathematics, Science & Technology → Transistors
Sound/audio
Sound
Colour
Black and White
Holdings
16mm film; Access Print (Section 1)