Methods and means for analyzing substances

Details Methods and means for analyzing substances Methods and means for analyzing substances

1973-06-15

1976-04-06

Wilbur, Maynard R.

Acoustics

Miscellaneous

73 24, 73 15R, 10K 1000, G10I 110

Patent

active

039483452

ABSTRACT:
In the method and means disclosed, an energy source applies energy of varying magnitude, to a substance being tested, and in a sufficient amount to produce detectable variations in a surrounding fluid. The frequency of the energy is varied. A pickup in the vicinity of the sample responds to the detectable variations and produces electrical signals corresponding to the detected variations. A display indicates the intensity of the electrical signals at the different energy frequencies.

REFERENCES:
patent: 2928069 (1960-03-01), Petermann
patent: 3322231 (1967-05-01), Gearnay
patent: 3532181 (1970-10-01), De Maria
White, "Generation of Elastic Waves by Transient Surface Heating, Journal of Applied Physics," Dec., 1963, p. 3559.
White, "Elastic Wave Generation by Electron Bombardment or EM Wave Absorption," Communications, p. 2123, 1962.
De Maria, "Picosecond Laser Pulses," Proceedings of the IEEE, Vol. 57, No. 1, 1969, p. 2.
Bell, "Upon the Production of Sound by Radiant Energy," 1881, pp. 510-528, Philosophical Mag., Vol. 11.

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