Radiant energy – Geological testing or irradiation
Patent
1989-08-03
1990-12-11
Howell, Janice A.
Radiant energy
Geological testing or irradiation
250255, G01T 118
Patent
active
049773186
ABSTRACT:
A procedure and a means for measuring radon content in the air, in which procedure the radon content in the air is measured by measuring the ion content of the air caused by the radon in the air and by its decay products.
REFERENCES:
patent: 4262203 (1981-04-01), Overhoff
"Air ions Measured in Rooms with Enhanced Contents of Naturally Produced Radons" by Reinhards Siksna from Arkiv for Geofysik, Band 4, nr 15, 23 Jan. 1963.
Graeff Thor G.
Ilmasti Veikko
Hanig Richard
Howell Janice A.
Ilmasti Elektroniikka Oy
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