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- W1490254493 abstract "A device for detecting the specific gravity of a liquid and a device for detecting the state of charge of a liquid phase electrolyte battery are described. In one embodiment of the present invention, a change in the critical angle of total internal reflection is utilized to determine the index of refraction of the liquid to be measured. It is shown that the index of refraction of the liquid is a function of the specific gravity of the liquid. In applications for measuring the state of charge of a battery, the specific gravity is proportional to the state of charge of the battery. A change in intensity of rays intersecting an interface surface indicates the critical angle which is a direct indication of the specific gravity of the liquid and the state of charge of a battery. In another embodiment, a light beam is projected through a transparent medium and then through a portion of the liquid to be measured. A change in refraction due to a change in the index of refraction of the liquid produces a deflection of the beam which is measured by a detector. The magnitude of deflection of the beam is directly proportional to themore » specific gravity of the liquid and the state of charge of a battery.« less" @default.
- W1490254493 created "2016-06-24" @default.
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- W1490254493 date "1980-11-18" @default.
- W1490254493 modified "2023-09-27" @default.
- W1490254493 title "Device for detecting the specific gravity of a liquid. [Patent application]" @default.
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