Nowadays electricity supplies one of our main sources of heat. Gerd Sommerhoff explains the electric current and shows how it may be used to give heat and light.
For Schools
First shown in November 1961
Repeated on Wednesday at 11.37 a.m.
(to 10.22)
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Nowadays electricity supplies one of our main sources of heat. Gerd Sommerhoff explains the electric current and shows how it may be used to give heat and light.
For Schools
First shown in November 1961
Repeated on Wednesday at 11.37 a.m.
(to 10.22)
