R
Of radioactivity unit. May also be referred to as roentgen.
A unit of radiation exposure; the dose of ionizing radiation that will produce 1 electrostatic unit of electricity in 1 cc of dry air.
This concept's ID is @1~68408
Of radioactivity unit. May also be referred to as roentgen.
A unit of radiation exposure; the dose of ionizing radiation that will produce 1 electrostatic unit of electricity in 1 cc of dry air.
This concept's ID is @1~68408