IN THIS EPISODE
The rainbow we see depends on our viewpoint in relation to the sun. Red has the longest wavelength of visible light and violet has the shortest. All rainbows are actually circular, but from the ground we can normally only see the upper part of the circle.
KNOW IT ALL
Covering aspects of physics, chemistry, biology and maths, Know It All answers popular science questions in a fun way. In three-minute segments, it mixes ‘hard’ science with intriguing archive footage and off-beat graphics.
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23 апр 2024
