Word: electromagneticism
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The removal of land mines is the sort of horrifying job that defies description. All armies depend on their-engineers to do it. One detector is a sort of divining rod that works on an electromagnetic circuit, creates a buzz in the engineer's earphones when held over a...
Also given were the exact latitude and longitude of the capsule's well, calculated to less than an inch. In case the latitude and longitude figures should be falsified by continental creep, directions were given for locating the capsule with electromagnetic finders.
Four years ago Professor Albert Einstein, the good grey sage of Princeton, N. J., published an essay in which he compared science to a pyramid (TIME, March 16, 1936). At the pyramid's base are a number of unconnected sense impressions, such as that boiling water is turbulent while...
Atomic Radio. Professor Isidor Isaac Rabi and associates of Columbia University showed that individual atoms send out radio waves in the broadcast and shortwave ranges-one and one-half to 1,000 metres. Naturally the energy of each wave is tiny and each atom sends out a wave only once...
Electromagnetic waves were supposed to be transported through space in a jelly-like medium called the ether. But the difficulty of constructing a coherent mathematical picture of the ether proved insuperable. Furthermore, the famed Michelson-Morley experiment showed fairly conclusively that the ether did not exist.