The sun radiates heat across 93 million miles of space to warm the earth. Gerd Sommerhoff describes something of the behaviour of these heat rays.
For Schools
First shown in November 1961
Repeated on Wednesday at 11.37 a.m.
(to 10.22)
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The sun radiates heat across 93 million miles of space to warm the earth. Gerd Sommerhoff describes something of the behaviour of these heat rays.
For Schools
First shown in November 1961
Repeated on Wednesday at 11.37 a.m.
(to 10.22)
