Research Results For 'Radioactive'

FREDERICK SODDY

Frederick Soddy was an English scientist. He was born in 1877 at Eastbourne and died in 1956. He was a pioneer in the study of radioactive substances.
Research Frederick Soddy

Otto Hahn was a German physical chemist who, in 1938, discovered nuclear fission. He was born in 1879 and died in 1968. He discovered the radioactive substance radiothorium and the element protactinium. In 1944 he was awarded the Nobel prize for chemistry.
Research Otto Hahn

GAMMA CAMERA

A gamma camera is a medical apparatus that detects gamma rays emitted from a person's body after the administration of a radioactive drug and so produces images of the organ being investigated.
Research Gamma Camera

GBU-28

The GBU-28 is an American laser-guided penetrator, blast/fragmentation bomb (bunker buster) designed in 1991 for the specific task of penetrating buried Iraqi command bunkers during the Iraqi invasion of Kuwait. The GBU-28 is 19 feet 2 inches long and carries a 4400 lb penetrating warhead comprising 630 pounds of high explosive and 3770 lbs of probably nuclear or radioactive additional materials within the main body of the bomb, this main body being a former 8-inch calibre artillery gun tube. The GBU-28 has a range in excess of 5 nautical miles. They are carried by F-15E and F-111F aircraft. The GBU-28 can penetrate 20 feet of concrete or 100 feet of earth, after which the explosive detonates to destroy the underground bunker.
Research GBU-28

ACTINIUM

Actinium is a radioactive trivalent element that resembles lanthanum in chemical properties and is found especially in pitchblende. It has the symbol Ac.
Research Actinium

ASTATINE

Astatine is a radioactive halogen element which was discovered by bombarding bismuth with alpha particles and is also released by radioactive decay. It has the symbol At.
Research Astatine

BACKGROUND RADIATION

Background radiation is low intensity ionising radiation which is always present in the environment. Most background radiation comes from natural sources such as cosmic rays and some types of rocks (for example granite in the Earth's crust); the rest - about 13 percent - comes from artificial sources. Of the artificial sources the one that contributes most to the
background radiation is the medical use of radioactive materials: other sources are the nuclear industry and fallout from weapons tests, television screens and luminous paint. When the radiation from a specific source is measured, the background radiation must be deducted from the result to make it accurate.
Research Background Radiation

BECQUEREL RAYS

Becquerel Rays was a name originally given to the radiations emitted by radioactive substances, and now distinguished as Alpha Rays, Beta Rays, and Gamma Rays. Becquerel Rays were so named from their discoverer, the eminent French physicist, Henri Becquerel. They were first detected in 1896, as proceeding from uranium salts.
Research Becquerel Rays