from The American Heritage® Dictionary of the English Language, 4th Edition

  • n. A unit of radiation exposure equal to the quantity of ionizing radiation that will produce one electrostatic unit of electricity in one cubic centimeter of dry air at 0°C and standard atmospheric pressure.


from The American Heritage® Dictionary of the English Language, 4th Edition

After Wilhelm Konrad Roentgen.


  • (they are, however, known as roentgen rays in many languages) but was rewarded in 1901 with the


  • A glance told her the background radiation was almost a full roentgen.

    Rogue Oracle

  • They passed one that displayed eighty-one millionths of a roentgen per hour.

    Rogue Oracle

  • The röntgen or roentgen (R) is a measure of radiation intensity of xrays or gamma rays.

    Radiation units

  • The men were given varied doses of radiation as high as 600 roentgen (today the largest recommended dose is six roentgen for an entire year).

    America's Nuclear Secrets

  • Those who received 15 roentgen or more became sterile temporarily.

    America's Nuclear Secrets

  • How to build a X-Ray Vision Camera tags: kamera diy roentgen basteln ...

    How to build a X-Ray Vision Camera

  • A millirem is one-thousandth of an REM roentgen equivalent man.

    Nuclear Alert! Hot Broccoli!

  • Both places with the highest temperatures are also the spots with the most intense radiation, five hundred roentgen per hour each at their centre.

    Menace of the Mutant Master

  • The needle slowly rose and steadied at one-half roentgen per hour as he thrust the probe over the rim of the depression.

    The Lani People


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  • "'They're a horde of stupid, dirty layabouts,' said Pettigrew. 'I know them, I grew up among them. You middle-class liberals like to pet them, but I wouldn't even let them breed. What we need is an X-ray device under the turnstiles at the football stadiums. Each man going through gets a blast of 900 roentgens right on the testicles. It would be perfectly painless. They wouldn't know what had happened till they got a wee printed card along with their entrance ticket. 'Dear Sir,' it would say. 'You may now ride your wife in perfect safety.''" - 'Lanark', Alasdair Gray.

    December 13, 2007