Word: defraction
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...earth so extensively that they take much of the energy in the electric waves. This fact is particularly true at this season of the year, for at present these rays of the sun are at very nearly their greatest intensity. In the second place, this radiation also tends to defract the waves upward so that they will pass far above the comparatively low aerials of the wireless posts and thus permit no message to be noticed. This is an objection which applies more directly to the flat and more light-colored districts which would thus better reflect...
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