Instruction manual for multichannel auroral photometer

M.D. Watson
Great Whale River, Quebec, (55°17•N, 77°47 1 W; recently renamed Poste-de­la-Baleine) and Byrd Station, Antarctica, (80°00.4 1 S, l19°29o5 1 W) are geomagnetically conjugate locations: that is, they lie at opposite ends of the same line of force of the earth's magnetic field. For this reason, a number of scientific agencies from Canada and the United States are making simultaneous measurements at the two stations of various geomagnetic and related phenomena. The visible aurora is...
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