German R unit
German R unit[¦jər·mən ′är ‚yü·nət]
A unit of radiation dose rate due to x-rays, equal to approximately 2.5 Solomon R units, or approximately 1.5 roentgens per second. Also known as R unit.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.