Radiant energy – Invisible radiant energy responsive electric signalling – With means to inspect passive solid objects
Patent
1980-09-25
1983-07-12
Smith, Alfred E.
Radiant energy
Invisible radiant energy responsive electric signalling
With means to inspect passive solid objects
378 59, G01N 2300
Patent
active
043933050
ABSTRACT:
A method and apparatus for measuring the thickness of a tubular wall includes a measurement of the intensities of the radiation beams passing through the wall and processing of the measured values in accordance with the method of least squares.
REFERENCES:
patent: 3109095 (1963-10-01), Van Horne
patent: 4038550 (1977-07-01), Wassen et al.
patent: 4187425 (1980-02-01), Thompson
Monno Asao
Shimizu Masami
Fuji Electric Company Ltd.
Howell Janice A.
Smith Alfred E.
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