1 0:48 Pocahontas Trailer Pocahontas When English settlers land on the shores of her village, a free-spirited girl wonders what history-changing adventures await.
The gray (Gy), which is the SI unit of absorbed dose, corresponds to the absorption of 1 J of energy per kilogram of tissue. The rad (radiation absorbed dose) corresponds to the absorption of 1 10â2 J of energy per kilogram of tissue. Thus, 1 Gy = 100 rads. The rad is the unit most often used in medicine.
Alpha, beta and gamma radiation. The degree to which each different type of radiation is most dangerous to the body depends on whether the source is outside or inside the body. If the radioactive source is inside the body, perhaps after being swallowed or breathed in: 1  Alpha radiation is the most dangerous because it is easily absorbed by cells. 2  Beta and gamma radiation are not as dangerous because they are less likely to be absorbed by a cell and will usually just pass right through it.