Nowadays electricity supplies one of our main sources of heat. Today Gerd Sommerhoff explains electric current and shows how it may be used to give heat and light.
For Schools
First shown in November 1961
(to 10.25)
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Nowadays electricity supplies one of our main sources of heat. Today Gerd Sommerhoff explains electric current and shows how it may be used to give heat and light.
For Schools
First shown in November 1961
(to 10.25)
