Electricity: measuring and testing – Testing potential in specific environment – Voltage probe
Patent
1978-02-24
1980-04-22
Strecker, Gerard R.
Electricity: measuring and testing
Testing potential in specific environment
Voltage probe
244177, 324457, G01R 2912, B64C 1316, G05D 110
Patent
active
041997158
ABSTRACT:
The present invention relates to a method and apparatus for detecting the earth's static electric field and determining the contour of its equipotential lines and surfaces and for utilizing the detected field as a reference for other measurements. In particular, the contour of the field can be determined by sensing the potential at a plurality of points and measuring the differences in potential at the points with a differential static amplifier. Alternatively, a fluxmeter for measuring the electric field vector directly can be used to sense changes in the magnitude and direction of the field. A line defined between two points or a plane defined by three noncolinear points in space can be made to coincide with an equipotential line or surface in space, respectively, by adjusting the relative positions of the points such that either the potential differences between the points or the field components sensed along the defined line or in the defined plane are zero. Similarly, a desired disorientation between the defined line or plane and the respective equipotential line or surface can be readily effected.
REFERENCES:
patent: 2454630 (1948-11-01), Buckthal
Clark, John F., "Airborne Measurement of Atmospheric Potential Gradient" Journal of Geophysical Research, vol. 62, No. 4, Apr. 1957 pp. 617-628.
Vonnegut et al. "Adjustable Potential-Gradient-Measuring App. for Airplane Use," Journal of Geophysical Research, vol. 66, No. 8, Aug. 1961 pp. 2393-2396.
Vonnegut et al., "Apparatus Using . . . for Measuring . . . Atmospheric Potential Gradient from an Airplane", Bull. of the Amer. Meteor. Soc., vol. 42, No. 11, Nov. 1961, pp. 773-777.
MacReady, Jr., Paul B., "Improving Thermal Soaring Flight Techniques" Soaring (Soaring Soc. of Amer.), Dec. 1961, pp. 6-11.
Archibald Robert E.
Block Marc A.
Strecker Gerard R.
The Johns Hopkins University
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