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characteristic curve
(redirected from characteristic curves)

   Also found in: Dictionary/thesaurus, Encyclopedia 0.01 sec.
characteristic curve
[ker′əktəris′tik]
a graphic relationship between the optic density (blackness) of an x-ray film and the exposure. Also called D log E curve, Hurter and Driffield curve, sensitometric curve.

characteristic
1. character.
2. typical of an individual or other entity. See also character.

characteristic curve
the photographic characteristics of an emulsion on an x-ray film based on plotting the density of the image obtained against the logarithm of the exposure under specified conditions of development.
characteristic radiation
nearly homogeneous radiation produced in the target of the x-ray tube when orbital electrons are knocked out and replaced by electrons from outer shells.
characteristic x-rays
see characteristic radiation (above).


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With the script's characteristic curves, sweeping strokes and color choices for tashkeel (the vowel accents decorating Arabic script), viewers get a bold piece of calligraphy.
Squeglia has extensively updated his work for this edition, which describes the attribute sampling plans, non-statistical sampling plants, relations of c=0 plans to ANSI Z1,4 plans, estimation of potential savings, why constant sample sizes are not used, use of the c=0 plans table, taking the sample, comments of the AOQL, background information, adjustments form other standards, sampling plan switching and guidelines, operating characteristic curves and values, and small lot supplement.
 
 
 
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