Visual-type hygrometer

Details Visual-type hygrometer Visual-type hygrometer

1977-05-09

1979-11-20

Myers, Jane S.

Organic compounds -- part of the class 532-570 series

Organic compounds

Carboxylic acids and salts thereof

562488, C07C 6520

Patent

active

041752074

ABSTRACT:
A composition of matter for use in a visual-type instrument which includes a polarizer for a light beam and an analyzer for a light beam, the chemical composition being birefringent at a first relative humidity and nonbirefringent at a second relative humidity.

REFERENCES:
patent: 3203982 (1965-08-01), McCracken et al.
patent: 3510513 (1970-05-01), McCracken et al.
patent: 3526048 (1970-09-01), Rowland et al.
patent: 3776038 (1973-12-01), Elliot

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