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

Wheatley Heights, New York

... and none of the area is covered with water. Demographics As of the census of 2000, there are 5,013 people, 1,455 households, and 1,223 families residing in the town. ...