Effects and Uses of Radiation 503
becquerel (Bq)
a measure of radioisotope activity. 1 Bq = 1 disintegration
per second.
curie
a measure of activity; 1 Ci = 37 x l010 disintegrations per second.
dosimeter
a device to measure the amount of radiation absorbed over time.
gray (Gy)
a unit of absorbed dose; 1 Gy = 1 J/kg.
mrem millirem:
1/1000 of a rem (radiation dose).
radon
a radioactive gas which emits alpha rays; atomic weight 222, atomic
number 86.
Roentgen
an old unit of radiation exposure
somatic effect
an effect on the health of an individual receiving radiation.
National Institutes of Health
http://www.health.nih.gov
Radiation Information Network at Idaho State University
http://www.physics.isu.edu/radinf
United States Environmental Protection Agency
http://www.epa.gov/radiation