Definition that contains ionizing radiation
- r a unit of radiation exposure; the dose of ionizing radiation that will produce 1 electrostatic unit of electricity in 1 cc of dry air
- gray the SI unit of energy absorbed from ionizing radiation; equal to the absorption of one joule of radiation energy by one kilogram of matter; one gray equals 100 rad
- radiation syndrome resulting from exposure to ionizing radiation (e.g., exposure to radioactive chemicals or to nuclear explosions); low doses cause diarrhea and nausea and vomiting and sometimes loss of hair; greater exposure can cause sterility and cataracts and some forms of cancer and other diseases; severe exposure can cause death within hours
- decay the spontaneous disintegration of a radioactive substance along with the emission of ionizing radiation
- rad a unit of absorbed ionizing radiation equal to 100 ergs per gram of irradiated material
- rem (roentgen equivalent man) the dosage of ionizing radiation that will cause the same amount of injury to human tissue as 1 roentgen of X-rays
- disintegration the spontaneous disintegration of a radioactive substance along with the emission of ionizing radiation
- 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
- gy the SI unit of energy absorbed from ionizing radiation; equal to the absorption of one joule of radiation energy by one kilogram of matter; one gray equals 100 rad
- dosimeter a measuring instrument for measuring doses of ionizing radiation (X-rays or radioactivity)