A subatomic particle with very small mass and zero charge, that rarely interacts with matter. Many quadrillions of neutrinos emanating from the core of the Sun pass through your body every second, but you'd never know it. Because of their ghostly properties, neutrinos are extremely difficult to capture and measure, but several super-sensitive neutrino detector arrays are now in operation around the world. Unlike optical telescopes, which can only see the surface of the Sun, neutrino telescopes might soon let us directly observe the solar core, so we can test our theories of thermonuclear fusion reactions.
A particle with no charge and little or no mass that is ejected from the nucleus at the same time as an electron or positron.
A group of leptons that have little, if any, mass. Since they are also electrically neutral, their most important interaction with other particles is the weak force. There is one neutrino for each of the charged leptons. See also: lepton, weak force, Debriefing, Journey - Neutrino
A very small particle emitted along with a positron
an uncharged, weakly interacting lepton, most commonly produced in nuclear reactions such as those in the sun. There are three known flavors of neutrino, corresponding to the three flavors of leptons. Recent experimental results indicate that all neutrinos have tiny masses.
Elementary particle without mass or charge emitted during a nuclear reaction.
small elementary particle with no charge.
chargeless species of particle, subject only to the weak force.
An almost massless particle of neutral charge that is released along with a beta particle in beta decay.
A neutrino is a stable leptonic neutral elementary particle with zero rest mass and has the same spin angular momentum as the nucleons and electrons, namely ½ . Neutrinos travel at the speed of light. Two types exist, one being produced with positrons in neutron decay and the other with positive muons in pion decay.
A fundamental particle which has no electric charge and hardly interacts with matter. Thus it is very elusive and difficult to detect. Neutrinos only have a small mass but they are very numerous and may account for some of the dark matter in the Universe. The existence of the neutrino was postulated by Enrico Fermi to explain a loss of energy in the radioactive beta decay. The neutrinos produced in the beta decay carry away the lost energy.
A very weakly interacting particle postulated by W. Pauli to preserve the concept of energy conservation, accounting as it did for the apparent energy loss in certain radioactive decay (nuclear beta decay). The neutrino, which has no charge and is thought to have zero rest mass, can pass many times through the earth without interacting. Thus it took considerable ingenuity on the parts of C.L.Cowan and F. Reines of the Los Alamos Scientific Laboratory in 1956 to experimentally locate this stable, elementary, and theretofore only theoretical particle. The sun is a strong source of neutrinos; however, present calculations and measurement of the solar neutrino flux are in disagreement by a factor of about three (a circumstance known as the solar neutrino puzzle).
A neutrino is one of several types of fundamental particle, which means it can't be broken down into anything smaller. Neutrinos are represented in particle physics with the symbol.
Spinning, neutral elementary particle. A neutrino has no rest mass and always travels at the speed of light.
A nearly massless particle created in certain types of nuclear reactions, which, because of its very small mass, travels at nearly (but not quite) the speed of light. The neutrino only interacts with matter through the weak nuclear force, which means that it has to practically pass right through an atomic nucleus in order to react with anything, and even then, usually just goes through without noticing the nucleus. As a result, extremely difficult to detect. It is believed that hundreds of neutrinos pass through every square inch of space every second, but since they go right through the material in that space, under most circumstances, they have no effect on it. Until fairly recently, it was thought that the neutrino was absolutely massless, and traveled at the speed of light, but problems in the flux of neutrinos coming from the Sun (the Solar neutrino problem), and various aspects of the Standard Model of subatomic particles implied that it must have at least some mass, and although that mass is very small (about one billion times less than the mass of the next lightest particle, the electron), it is not quite zero.
A fundamental particle that has little or no rest mass and no charge but that does have spin and energy. Neutrinos rarely interact with ordinary matter.
Any of three uncharged, apparently massless leptons, each associated with one of the charged leptons.
A particle that resembles the photon, except that it interacts weakly with matter. Neutrinos come in at least three varieties, known as electron-type, muon-type, and tauon-type.
A lepton with no electric charge. Neutrinos participate only in weak (and gravitational) interactions and therefore are very difficult to detect. There are three known types of neutrino, all of which have very low or possibly even zero mass.
A class of elementary particle thought to have either no mass or very little mass. If neutrinos have any mass, then they may account for some fraction of dark matter. For more on neutrinos, check out this big bang cosmology primer.
Small, very light sub atomic particle
An elementary particle produced by certain nuclear decay processes. Neutrinos have no charge and extremely small masses compared to other subatomic particles.
Virtually massless and chargeless particle that is one of the products of fusion reactions in the Sun. Neutrinos move at close to the speed of light, and interact with matter hardly at all.
A stable elementary particle with no charge, assumed zero rest mass, and a spin of 1/2. Recent results have indicated that neutrinos may have a very small amount of mass. If so, they would be important in determining the structure and evolution of the universe.
an elementary particle with zero charge and zero mass
a fundamental particle in the electron family that has no charge and is therefore not deflected by an electromagnetic field
a massless (or very nearly massless) particle that rarely interacts with ordinary matter
a neutral particle of very small mass (nearly zero when at rest) that is emitted during neutron degradation
an uncharged particle with virtually no mass
a particle with no charge and infinitesimally small mass
a process which is MASS itself
a real particle that can pass unimpeded through solid lead a billion kilometers thick
a short-lived uncharged particle of zero or near zero rest mass
a sub-atomic particle that interacts weakly with matter and travels at a speed that is essentially the speed of light
a subatomic particle that is very similar to an electron, but has no electrical charge and a very small ma
a sub-atomic particle with no charge that can fly through matter as if it wasn't there
a sub atom ic particle with no electric charge
a type of nuclear particle that is able to pass through the massive core of a star without being altered or affected in any way
a very penetrating particle, difficult to detect, because it passes through matter with a very, very low probability of interacting
An extremely light (possibly massless) particle that is affected only by the weak force and gravity.
A fundamental particle. A neutral lepton, there are three, one each associated with the elesctron, muon and tau particles. The mass of neutrinos is thought to be either extremely small or zero. The interact extremely weakly with normal matter. They are produced in fusion reactions in stellar interiors. The first detection of neutrinos associated with an object from beyond our Sun was from Supernova 1987A.
A type of particle which has no charge and an extremely small mass. It is a Fermion, and is extremely difficult to stop or to detect. Nonetheless, they are produced in large numbers. The Sun, for example, sends 30 million neutrinos through every square inch of the Earth every single second. They are so hard to stop, however, that if a neutrino were sent through a solid light year of lead, it would still have a 50:50 chance of flying right through without stopping.
Elementary particle without rest mass which accompanies beta plus ( positron) particles during disintegration. The neutrino shares energy with the positron giving a continuous beta energy spectrum. It is also emitted during electron capture.
A subatomic particle of negligible mass, named by Enrico Fermi.
a particle with no mass or charge, but has energy associated with it.
An electrically neutral elementary particle that is one of the products of nuclear fusion reactions. Neutrinos have little or no mass, move at close to the speed of light, and interact very weakly with matter.
Any of three tiny uncharged subatomic particles of the "lepton" class. They are produced by the Sun, other stars, and supernovae. Roughly 10 million neutrinos from the Sun will pass through your body while you read this sentence. Neutrinos travel at the speed of light; by the time you have read this paragraph, the neutrinos that passed through your body will be further away than the Moon.
Neutrino is a stable elementary particle in the lepton family. Neutrinos have zero (or at least near-zero) rest mass and spin 1/2.
A small particle that has no charge and is thought to have very little mass. Neutrinos are created in energetic collisions between nuclear particles. The universe is filled with them but they rarely collide with anything.
An elusive particle because it barely interacts with other particles. It has zero or very little mass. Scientists are trying to determine if it has mass. It has no electrical charge and belongs to the family of leptons. There are three types of neutrinos: electron neutrinos, tau neutrinos, and mu neutrinos, corresponding to their lepton partners, the electron, tau, and mu.
There are 3 generations of neutrinos corresponding to the electron, muon, and the tau lepton. Neutrinos interact very weakly with matter. Assumed massless for a long time, evidence is starting to indicate neutrinos have a mass and in fact oscillate between the different generations. Measuring neutrinos are important though in modelling what stage of development the sun is undergoing. Scientists believe their is a deficit in the amount of neutrinos seen from the sun for which one explanation is the oscillation of one flavor to another.
an uncharged elementary particle with zero rest mass.
A lepton with no electric charge. Neutrinos participate only in weak and gravitational interactions and are therefore very difficult to detect. There are three known types of neutrinos, all of which are very light and could possibly have zero mass
An electrically neutral particle with negligible mass. It is produced in processes such as beta decay and reactions that involve the weak force.
An elusive particle with very small mass that arises in weak nuclear reactions.
An electrically neutral particle with negligible mass. It is produced in many nuclear reactions such as in beta decay.
An elementary particle with no charge and almost no mass. which interacts very weakly with other matter. more
An elementary particle with zero electric charge and very little mass. Neutrinos are produced copiously by many of the nuclear reactions powering stars. Neutrinos interact only very weakly with other matter.
subnuclear particle produced within the stars during thermonuclear fusion reactions. Neutrinos do not have any mass or electric charge, and for this reason they go through matter without interacting with it. They are very difficult to detect.
a weak neutral particle emitted during beta decay
a sub-atomic particle with very small mass that is produced in nuclear fusion reactions and rarely interacts with ordinary matter. Neutrinos travel at the nearly the speed of light and provide current information about the number of nuclear fusion reactions occurring in a star's core (in the case of the Sun, the information is only about 8.3 minutes old).
A fundamental particle supposedly produced in massive numbers by the nuclear reactions in stars; they are very hard to detect because the vast majority of them pass completely through the Earth without interacting.
A neutral, weakly interacting elementary particle having little or no mass.
A neutral, weakly interacting elementary particle having a very tiny mass. Stars like the Sun produce more than 200 trillion trillion trillion neutrinos every second. Neutrinos from the Sun interact so weakly with other matter that they pass straight through the Earth as if it weren't there.
subatomic particle of zero, or near zero, rest mass, having no electric charge, postulated by Fermi (1934) in order to explain apparent contradictions to the law of conservation of energy in beta-particle emission. According to Fermi theory, the atomic nucleus in beta decay releases energy partly in the form of electrons (beta particles) and partly in the form of neutrinos.
A neutral, massless atomic particle that travels at the speed of light.
A lepton with no electric charge. Neutrinos participate only in weak and gravitational interactions and are therefore very difficult to detect. There are three known types of neutrinos, all of which have very little mass. [ ] [ Close Glossary
Neutrinos are elementary particles. Travelling close to the speed of light, lacking electric charge and able to pass through ordinary matter almost undisturbed, their detection is extremely challenging. Neutrinos were once thought to have no mass, but they are now known to have a minuscule (but non-zero) mass.