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Nuclear fallout is the residual radioactive material propelled into the upper atmosphere following a nuclear blast, so called because it "falls out" of the sky after the explosion and the shock wave has passed.
Home. Science. Effects of Nuclear Weapons. Radioactive Fallout. Fallout is the radioactive particles that fall to earth as a result of a nuclear explosion. It consists of weapon debris, fission products, and, in the case of a ground burst, radiated soil. Fallout particles vary in size from thousandths of a millimeter to several millimeters.
Fallout, deposition of radioactive materials on Earth from the atmosphere. The terms rain out and snow out are sometimes used to specify such deposition during precipitant weather. Radioactivity in the atmosphere may arise from (1) natural causes, (2) nuclear or thermonuclear bomb explosions, and
- The Editors of Encyclopaedia Britannica
2023年7月3日 · This webpage provides information about radioactive fallout from atmospheric nuclear weapons tests conducted during the 1940s and 1950s. It also provides some estimates of how much fallout exposure people received, possible effects, and how frequently the effects might occur.
Local fallout is the early deposition of relatively large radioactive particles that are lofted by a nuclear explosion occurring near the surface in which large quantities of debris are drawn into the fireball. For nuclear weapons, the primary early danger from local fallout is due to gamma radiation.
- 1986
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fallout. Residual radiation is defined as radiation emitted more than one minute after the detonation. If the fission explosion is an airburst, the residual radiation will come mainly from the weapon debris. If the explosion is on or near the surface, the soil, water, and other materials in the vicinity will be sucked upward by the rising cloud
2023年7月20日 · Using state-of-the-art modeling software and recently uncovered historical weather data, the study’s authors say that radioactive fallout from the Trinity test reached 46 states, Canada and...
