Electrical measuring apparatus, and methods for determining the

Details Electrical measuring apparatus, and methods for determining the Electrical measuring apparatus, and methods for determining the

1985-03-14

1987-09-08

Scott, Samuel

Electricity: measuring and testing

Conductor identification or location

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324 65R, 324 61R, G01R 2726

Patent

active

046926852

ABSTRACT:
This invention relates to a measurement system which applies voltage signals of different frequencies across a biological sample. The frequencies are chosen such that both resistance and capacitance are significant components of the measured impedance. The state of the biological sample is reflected in the admittance ratio for two frequencies.

REFERENCES:
patent: 2759149 (1956-08-01), Hart
patent: 3155902 (1964-11-01), Walls
patent: 3255410 (1966-06-01), Norwich
patent: 3320946 (1967-05-01), Dethloff et al.
patent: 3323047 (1967-05-01), Martin et al.
patent: 3688309 (1972-08-01), Volberg
patent: 3746975 (1973-07-01), Maltby
patent: 3766471 (1973-10-01), Pullman
patent: 4019132 (1977-04-01), Loch
patent: 4259633 (1981-03-01), Rosenau
patent: 4408128 (1983-10-01), Fujita
The Electrical Assessment of Plant Health and Injury, by Greg Moore and Kevin Blaze, 3/1980.
The Effects of High Temperatures on the Growth and Physiology of E. Obliqua L'Herit Seedlings, Thesis by Gregg Moore, University of Melbourne, Nov. 1981.

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