enow.com Web Search

Search results

  1. Results from the WOW.Com Content Network
  2. Spent nuclear fuel - Wikipedia

    en.wikipedia.org/wiki/Spent_nuclear_fuel

    Spent nuclear fuel stays a radiation hazard for extended periods of time with half-lifes as high as 24,000 years. For example 10 years after removal from a reactor, the surface dose rate for a typical spent fuel assembly still exceeds 10,000 rem/hour—far greater than the fatal whole-body dose for humans of about 500 rem received all at once.

  3. Radiative cooling - Wikipedia

    en.wikipedia.org/wiki/Radiative_cooling

    The Earth-atmosphere system is radiatively cooled, emitting long-wave radiation which balances the absorption of short-wave (visible light) energy from the sun. Convective transport of heat, and evaporative transport of latent heat are both important in removing heat from the surface and distributing it in the atmosphere.

  4. Bioremediation of radioactive waste - Wikipedia

    en.wikipedia.org/wiki/Bioremediation_of...

    From this process, some strategies have been designed based on sequences of ponds with a slow flow of water to clean polluted water with radionuclides. The results of these facilities, for flows of 1000 liters of effluent are about 95% retention of radiation in the first pond (by plants and sludge), and over 99% in three-base systems. [33]

  5. Radioactive waste - Wikipedia

    en.wikipedia.org/wiki/Radioactive_waste

    Exposure to radioactive waste may cause health impacts due to ionizing radiation exposure. In humans, a dose of 1 sievert carries a 5.5% risk of developing cancer, [7] and regulatory agencies assume the risk is linearly proportional to dose even for low doses. Ionizing radiation can cause deletions in chromosomes. [8]

  6. Nuclear reactor heat removal - Wikipedia

    en.wikipedia.org/wiki/Nuclear_reactor_heat_removal

    The removal of heat from nuclear reactors is an essential step in the generation of energy from nuclear reactions.In nuclear engineering there are a number of empirical or semi-empirical relations used for quantifying the process of removing heat from a nuclear reactor core so that the reactor operates in the projected temperature interval that depends on the materials used in the construction ...

  7. Rainout (radioactivity) - Wikipedia

    en.wikipedia.org/wiki/Rainout_(radioactivity)

    A rainout is the process of precipitation causing the removal of radioactive particles from the atmosphere onto the ground, [1] creating nuclear fallout by rain. The rainclouds of the rainout are often formed by the particles of a nuclear explosion itself and because of this, the decontamination of rainout is more difficult than a "dry" fallout.

  8. Electromagnetic absorption by water - Wikipedia

    en.wikipedia.org/wiki/Electromagnetic_absorption...

    Liquid water and ice emit radiation at a higher rate than water vapour (see graph above). Water at the top of the troposphere, particularly in liquid and solid states, cools as it emits net photons to space. Neighboring gas molecules other than water (e.g. nitrogen) are cooled by passing their heat kinetically to the water.

  9. Solar transition region - Wikipedia

    en.wikipedia.org/wiki/Solar_transition_region

    Helium ionization is important because it is a critical part of the formation of the corona: when solar material is cool enough that the helium within it is only partially ionized (i.e. retains one of its two electrons), the material cools by radiation very effectively via both black-body radiation and direct coupling to the helium Lyman continuum.