(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
(Askeri) (REM) (MAMMAL) İNSAN EŞİTİ RÖNTGEN (MEMELİ) (IER): Bir insan tarafından emildiği zaman bir röntgenlik X veya Gamma radyasyonu emmiş bir insandaki aynı etkiyi meydana getiren her çeşit nötron enerji miktarı. İnsan eşiti röntgen radyasyon miktarı; emilen radyasyon miktarının izafi biyolojik etki derecesi (relative biological effectiveness) ile çarpımına eşittir
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 to product in air 2 58 X 10-4 coulomb of ions per kilogram of air
in nuclear energy; a unit of exposure to radiation like X-rays; named for the discoverer of X-rays, Wilhelm Roentgen, in 1895
a unit of radiation exposure; the dose of ionizing radiation that will produce 1 electrostatic unit of electricity in 1 cc of dry air
German physicist who discovered x-rays and developed roentgenography (1845-1923)
The amount of radiation that will produce one electrostatic unit of ions per cubic centimeter volume
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
born 1711, Mühlheim, Cologne died 1793, Neuwied?, Trier German furniture designer and cabinetmaker. In 1750 he established a shop in Neuwied, near Cologne. The Rococo-style furniture he produced there was of outstanding quality and was often decorated with inlay work of ivory and other semiprecious materials. Much of his work was created for various German courts. His son David Roentgen (1743-1807), who succeeded him as head of the firm in 1772, was appointed cabinetmaker to Marie-Antoinette of France. The Roentgens' shop was perhaps the most successful firm of furniture production in the 18th century