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- Number of terms: 3726
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Projeksjon av human attributter på nonhuman enheter som dyr, planetene, og universet som helhet.
Industry:Astronomy
1) Retning av himmelen motsatt av galaktiske center.
2) Punktet i galactic flyet som ligger rett overfor galaktiske sentrum. Her blikket vi mot kanten av galaktiske disken. Nærmeste lysende stjerne til anticenter er El Nath, i konstellasjonen Tyren.
Industry:Astronomy
Antipartikkel av en Nøytron. En neutron og antineutron begge har samme massen og null elektrisk ladning, men kan differensieres av deres samspill: en neutron og en antineutron kan utslette i gammastråling, mens to nøytroner ikke.
Industry:Astronomy
1) An elementary particle of opposite charge but otherwise identical to its partner. Most of the observable universe consists of particles and matter, as opposed to antiparticles and antimatter.
2) Atomic particles that have the same mass as, but opposite charge and orbital direction to, an ordinary particle. Thus, instead of negatively charged electrons, atoms of antimatter have positrons. A quantity of antimatter coming into contact with matter would "cancel out" - annihilate, with total conversion of mass to energy - an exact proportion of matter corresponding to the original quantity of antimatter, provided that the elements in the matter also corresponded with the "elements" in the antimatter, i.e., that the atoms were equivalent but opposite.
3) For every known type of particle, there exists an antiparticle with exactly the same mass, but with the opposite electric charge. When a particle and its antiparticle come together, they can always annihilate to form gamma rays. The antiparticle of an electrically neutral particle is sometimes the same as the original particle (e.g., photons) and sometimes it is distinct (e.g., neutrons.)
4) Particles predicted by combining the theories of special relativity and quantum mechanics. For each particle, there must exist an antiparticle with the opposite charge, magnetic moment and other internal quantum numbers (e.g., lepton number, baryon number, strangeness, charm, etc.), but with the same mass, spin and lifetime. Note that certain neutral particles (such as the photon and π0) are their own antiparticles.
5) Particles with identical mass and spin as those of ordinary matter, but with opposite charge. Antimatter has been produced experimentally, but little of it is found in nature. Why this should be so is one of the questions that must be answered by any adequate theory of the early universe.
Industry:Astronomy
Antipartikkel et proton, identisk masse og spinn, men av motsatt (negativ).
Industry:Astronomy
Også AR belegg. Et lag med materiale av lavere brytningsindeks av bare riktig tykkelse (1/4 bølge) settes inn på optisk overflaten å være belagt. Mer komplekse belegg er mulig som dekker en stor bølgelengdeområde.
Industry:Astronomy
Poenget i bane med en del av et binært system der det er lengst den andre.
Industry:Astronomy
