Hot particle — A hot particle is a small, highly radioactive object, with significant content of radionuclides. Most hot particles released into the environment originate in nuclear reactors. They also are a component of the fallout from a nuclear weapon… … Wikipedia
Hot dark matter — is a hypothetical form of dark matter which consists of particles that travel with ultrarelativistic velocities. The best candidate for the identity of hot dark matter is the neutrino. Neutrinos have very small masses, and do not partake in two… … Wikipedia
Hot air balloon — This article is about hot air balloons themselves. For the associated activity, see hot air ballooning. For the rock opera, see Hot Air Balloon (rock opera). For the song, see Hot Air Balloon (song). Hot air balloon in flight … Wikipedia
hot dark matter — n. dark matter comprised of particles that move with ultrarelativistic velocities … English contemporary dictionary
List of fictional elements, materials, isotopes and atomic particles — This list contains chemical elements, materials, isotopes or (sub)atomic particle that exist primarily in works of fiction (usually fantasy or science fiction). No actual periodic elements end in ite , though many minerals have names with this… … Wikipedia
Weakly interacting massive particles — In astrophysics, weakly interacting massive particles, or WIMPs, are hypothetical particles serving as one possible solution to the dark matter problem. These particles interact through the weak nuclear force and gravity, and possibly through… … Wikipedia
Ultrafine particles — (UFPs) are nanoscale, less than 100 nanometres. Clusters of UFPs can be seen with the naked eye. But, electron microscopy and special physical lab conditions allow scientists to observe UFP morphology. UFPs are both manufactured and naturally… … Wikipedia
Weakly interacting massive particles — En astrophysique, les WIMPs (acronyme anglais pour « particules massives interagissant faiblement » wimp signifie aussi « mauviette » dans cette langue) sont des particules hypothétiques constituant une solution au problème de … Wikipédia en Français
Second law of thermodynamics — The second law of thermodynamics is an expression of the universal law of increasing entropy, stating that the entropy of an isolated system which is not in equilibrium will tend to increase over time, approaching a maximum value at… … Wikipedia
Chernobyl disaster — This article is about the 1986 nuclear plant accident in Ukraine. For other uses, see Chernobyl (disambiguation). Chernobyl disaster … Wikipedia