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ELECTROMAGNETIC ENERGY DEFINITION FOR KIDS What do you think the air contains? It contains millions of tiny, fast-moving particles.Waves of energy pass through the air, too.This kind of energy,...
Preserving Dried Flowers in Color and Form –... One of the most distressing sides of botanical study is the short life of the colors in flowers. Those who have found the usual method of preserving p...
How to Make a Telescope at Home With a telescope like the one here described, made with his own hands, a farmer boy many years ago discovered a comet which had escaped the watchful e...
HOW SOLAR POWER WORKS? More energy reaches earth from the sun than could be converted by millions of power stations. The sun’s energy costs nothing, but how can we use it?We...
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