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The east-west and longitude effects

Neher, H. V. (1935) The east-west and longitude effects. Physical Review, 47 (5). pp. 417-418. ISSN 0031-899X. doi:10.1103/PhysRev.47.417.

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In measuring the difference between the numbers of charged particles effecting a line of Geiger-Muller counters when it is tilted toward the west and then toward the east, the common practice is to rotate the line of counters about an axis normal to the equipotential gravitational surface at the location in which the experiment is being conducted. Now it has been shown in sea-level surveys by Clay(1) and by Millikan and Neher(2) that the variations in the surface magnetic field for the same geomagnetic latitude extend to sufficient heights to influence the charged particles coming in at the equator, giving rise to the "longitude effect."

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Additional Information:©1935 The American Physical Society. Received 18 February 1935. I wish to make acknowledgment of the fact that studies leading to these suggestions have been supported by a grant from the Carnegie Corporation of New York.
Issue or Number:5
Record Number:CaltechAUTHORS:NEHpr35
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:6571
Deposited By: Tony Diaz
Deposited On:13 Dec 2006
Last Modified:08 Nov 2021 20:35

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