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.
1 Below that, in the stratosphere, ozone absorbs nearly all the ultraviolet radiation (between 200 and 310 nm). 2  In the lowest region of the atmosphere, the troposphere, colored molecules absorb some visible light and other molecules (H 2 O, CO 2) absorb infrared or heat energy.