(Askeri) RÖNTGEN: Havada emilmiş X veya Gamma ışınlarının toplam miktarına ait ölçü birimi. Bu terim; teknikte, standart ısı ve basınç şartlarını içeren bir santimetre küp kuru havada, iyonlaşmanın bir sonucu olarak, pozitif ve negatif elektrostatik elektrik birimi taşıyan iyonlar meydana getirecek X veya Gamma radyasyon miktarı olarak ifade edilir
English - English
Definition of rontgen in English English dictionary
German physicist who discovered x-rays and developed roentgenography (1845-1923)
A measure of the ability of x-rays or radioactive decay products to produce ionization in air One roentgen corresponds to the absorption of about 86 ergs (100 ergs = 6 24 x 10 million electron volts, MeV) of energy from x- or gamma radiation, per gram of air The corresponding absorption of energy in tissue may be from one-half to two times as great, depending on the energy and type of the radiation and the chemical composition of the tissue
the amount of x or gamma radiation which will cause ionization of one electrostatic unit of charge in 1 cubic centimeter of dry air at standard temperature and pressure
A unit of radiation exposure That quantity of x- or gamma-radiation such that the associated corpuscular emission per 0 001 293 gram of dry air (equals 1 cubic centimeter at 0oC and pressure 769 millimeters of mercury) produces in air ions carrying 1 esu of electricity of either sign
A unit of exposure to ionizing radiation It is the amount of gamma rays or X-rays required to produce ions carrying 1 electrostatic unit of electrical charge in 1 cubic centimeter of dry air under standard conditions See "Exposure "
German physicist who discovered x-rays and developed roentgenography (1845-1923) a unit of radiation exposure; the dose of ionizing radiation that will produce 1 electrostatic unit of electricity in 1 cc of dry air
A basic unit of measurement of the ionization produced in air by gamma or x-rays One Roentgen (R) is exposure to gamma or x-rays that will produce one electrostatic unit of charge in one cubic centimeter of dry air One thousand milliroentgen (1,000 mR)= 1R