Roentgen
— Navneord
– Engelsk
~ German physicist who discovered x-rays and developed roentgenography (1845-1923)
roentgen ray
— Navneord
– Engelsk
~ electromagnetic radiation of short wavelength produced when high-speed electrons strike a solid target
roentgen
— Navneord
– Engelsk
~ a unit of radiation exposure; the dose of ionizing radiation that will produce 1 electrostatic unit of electricity in 1 cc of dry air
roentgenium
— Navneord
– Engelsk
~ a radioactive transuranic element