Encyclopedia > Roentgen

Article Content

Roentgen

The röntgen (symbol R) is a unit of dosage of X-rays or gamma radiation, being the dose that liberates positive and negative charges of 2.58×10^-4 coulombs per kilogram of air. It is named after the physicist Wilhelm Röntgen.

All Wikipedia text is available under the terms of the GNU Free Documentation License

Search Encyclopedia

Search over one million articles, find something about almost anything!

Featured Article

Anna Karenina

... are at the station to welcome Anna and Vronsky's mother respectively. This is the occasion the first meeting of Anna and Vronsky. As they, Anna and Countess Vronsky ar ...