TERMIUM Plus®

The Government of Canada’s terminology and linguistic data bank.

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Record 1 2015-05-06

English

Subject field(s)
  • Metrology and Units of Measure
  • Radiological Physics (Theory and Application)
  • Radiation Protection
  • Radiography (Medicine)
Universal entry(ies)
DEF

The unit of exposure to X- or gamma rays in air [that] is used to express the total amount of electric charge produced per unit mass of air by all the ions of one sign when all the electrons liberated by the rays are completely stopped in air; and is defined as 2.58 X 10-4 C [coulombs]/kg exactly.

OBS

roentgen; R: term and symbol officially approved by the Department of National Defence and the Canadian Forces; term and symbol standardized by ISO in 1997.

French

Domaine(s)
  • Unités de mesure et métrologie
  • Physique radiologique et applications
  • Radioprotection
  • Radiographie (Médecine)
Entrée(s) universelle(s)
DEF

Unité d'exposition de rayonnement X ou gamma (symbole R), équivalant à 2,58 X 10-4 coulomb par kilogramme.

OBS

Le röntgen [...] a été supplanté par le coulomb par kilogramme (C/kg) [unité d'exposition du Système international d'unités].

OBS

rœntgen; R : terme et symbole uniformisés par le ministère de la Défense nationale et les Forces canadiennes.

OBS

röntgen; R : terme et symbole normalisés par l'ISO en 1997.

Spanish

Campo(s) temático(s)
  • Metrología y unidades de medida
  • Física radiológica (Teoría y aplicación)
  • Protección contra la radiación
  • Radiografía (Medicina)
Entrada(s) universal(es)
DEF

Unidad especial que se emplea para expresar la exposición en física de radiaciones ionizantes.

OBS

Su símbolo es R y equivale a 2.58 X 10-4 Ckg-1.

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