reciprocity law


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Related to reciprocity law: Quadratic reciprocity law

Bun·sen-Ros·coe law

(bŭn'sĕn ros'kō),
in two photochemical reactions, for example, the darkening of a photographic plate or film, if the products of the intensity of illumination and the time of exposure are equal, the quantities of chemical material undergoing change will also be equal; the retina for short periods of exposure obeys this law.
Farlex Partner Medical Dictionary © Farlex 2012

reciprocity law

Any milliamperage multiplied by an exposure time setting that gives the same milliamperage-second outcome should give the same relative density to an image. However, this law is dramatically affected by the image receptor response curve, esp. when it is not a 45° linear curve. In radiographic intensifying film and screen technologies, the reciprocity law does not hold at long exposure times because of the reversal of the D log E response curve.
See also: law
Medical Dictionary, © 2009 Farlex and Partners

Bunsen,

Robert W., German chemist and physicist, 1811-1899.
Bunsen burner - a gas lamp giving a very hot but only slightly luminous flame.
Bunsen solubility coefficient - the milliliters of gas STPD dissolved per milliliter of liquid and per atmosphere (760 mmHg) partial pressure of the gas at any given temperature.
Bunsen-Roscoe law - in two photochemical reactions, if the product of the intensity of illumination and the time of exposure are equal, the quantities of chemical material undergoing change will be equal. Synonym(s): reciprocity law; Roscoe-Bunsen law
Roscoe-Bunsen law - Synonym(s): Bunsen-Roscoe law
Medical Eponyms © Farlex 2012
References in periodicals archive ?
"We have examples of similar reciprocity laws elsewhere in the world that first came with loopholes but were later solved.
One of the primary purposes of the literature search was to identify research that indicated that short-term, high irradiance UVC experiments could be used to accurately predict the performance of polymers exposed to long-term, low irradiance UVC, i.e., UVC exposure obeys the reciprocity law. The reciprocity law is obeyed if the photodegradation of the polymer is dependent only on the total energy of UV exposure (irradiance x time) and is independent of the time or irradiance level taken separately.
Putting a = 0 in Equation (4), we obtain the reciprocity law for the theta function, viz,
One of the first experiments to be carried out on the SPHERE was to ascertain the relationship between the UV irradiance and the photoresponse of a polymeric system, and to subsequently determine whether the reciprocity law is valid for this particular material.
The objectives of this study were to (1) ascertain the relationship between the level of applied UV irradiance in a laboratory device and the photoresponse of a model acrylicmelamine polymer, and (2) to determine whether the reciprocity law is valid for this particular polymeric system.
* Bodrum is getting busier thanks to the Reciprocity Law - TSKB Gayrimenkul Dey-erleme -
The more recent flavors of reciprocity laws DO NOT generally authorize direct mail solicitation and sales programs.
With a Reciprocity Law now in effect, foreign investment in Turkish residential real estate is expected to reach around $5 billion a year.
ySTANBUL (CyHAN)- The law enabling foreign citizens to buy property in Turkey is known as the reciprocity law and was passed by Parliament in May.
ySTANBUL (CyHAN)- A new piece of legislation -- often referred to as the reciprocity law -- which is intended to allow foreigners to purchase property in Turkey, even if Turks do not enjoy the same right in those same foreign countries, has taken effect.
Ensure that licensure reciprocity laws for mental health and substance use treatment professionals are implemented