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background count

   Also found in: Encyclopedia, Wikipedia 0.01 sec.
The evidence or effect on a detector of radiation caused by background radiation. In connection with health protection, the background count includes but is not limited to radiations produced by naturally occurring radioactivity and cosmic rays.
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Here we have both genuine signal counts and background counts, and the total random error is then the square root of the sum of the squares of the error on the background and of the error on the genuine photon count.
First steps to double star measurement using visible light ... by Williams, Sheridan; Cooper, Alan / Journal of the British Astronomical Association
l haplotypes was rather mild with only doubling from the background counts while expressions of haplotype 5q35 were rather downregulated with respect to background counts on concentrations of 2 and 3[micro]g/mL.
Effects of exposure to low concentrations of nercury on Glycine ... by Ayensu, Wellington K.; Farah, Ibrahim O.; Isokpehi, Raphael D.; Lee, Chung; Tchounwou, Paul B. / Journal of the Mississippi Academy of Sciences
Because the study population was presumed fertile, a small decrease in sperm count might not be detectable against high background counts, and could explain the null results reported by the authors.
Sperm quality and tap water: disinfection by-product effects not ... by Brown, Valerie J. / Environmental Health Perspectives
 
 
 
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