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neutrino

The Columbia Encyclopedia, Sixth Edition

neutrino [Ital.,=little neutral (particle)], elementary particle with no electric charge and a very small mass emitted during the decay of certain other particles. The neutrino was first postulated in 1930 by Wolfgang Pauli in order to maintain the law of conservation of energy during beta decay (see conservation laws ; radioactivity ). When a radioactive nucleus emits a beta particle (electron), the electron may have any energy from zero up to a certain maximum. Pauli suggested that when the electron has less than the maximum possible value, the remaining energy is carried away... Read more

neutrino astronomy
The Columbia Encyclopedia, Sixth Edition ... of stars by means of their emission of neutrinos , fundamental particles that result from ... with light. Approximately 100 billion neutrinos have raced through your body since you ... absorb the light coming from the interior. Neutrinos, on the other hand, are absorbed only ... Read more

solar neutrino problem
Britannica Concise Encyclopedia Shortfall in the expected number of neutrino s produced by the Sun that are detected ... one-third to two-thirds the number of neutrinos predicted by theory to arrive from the ... solar energy production was wrong or that neutrinos transformed en route to Earth in a way ... Read more

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Related newspaper, magazine, and journal articles from HighBeam Research

	Weighing up the neutrino: the little neutrino could cause big problems for the physicists' pictures of the universe. (neutrino research) The Economist (US); 3/30/1991; 1530 words ; The little neutrino could cause big problems for the physicists ... fair idea of the insubstantiality of neutrinos. They do almost nothing-they can pass ... California and England, observations of heavy neutrinos are causing gentlemanly but intense ... Read more
	Solar neutrino mysteries persist. Science News; 4/30/1988; Thomsen, Dietrick E.; 791 words ; Solar neutrino mysteries perists Neutrinos emerge from a variety of reactions between atomic nuclei. As ... those reactions proceed have chosen to monitor the flux of neutrinos coming from the sun. It isn't easy. Neutrinos are the most ... Read more
	Neutrino physics after the supernova. Science News; 4/11/1987; Thomsen, Dietrick E.; 1074 words ; Neutrino physics after the supernova Neutrinos from supernova 1987A arebeginning to change some of physicists ... latest aspect of this is the attempt to determine whether the neutrino has mass by calculating from the time of flight between the ... Read more
	Neutrino astronomy born in a supernova. Science News; 3/21/1987; Thomsen, Dietrick E.; 1036 words ; Neutrino Astronomy Born in a Supernova It's just a neutrino high, just wonderful,'says John Bahcall of Princeton ... p.165). This appears to be the definitive finding of neutrinos from the supernova. United in the simultaneous detection ... Read more
	Neutrino telescope helps map universe The Milwaukee Journal Sentinel; 7/21/2003; JOHN FAUBER; 940 words ; Neutrino telescope helps map universe Subatomic particles reach ... journalsentinel.com, Journal Sentinel Monday, July 21, 2003 Using a neutrino telescope buried deep under the ice of the South Pole ... telescope looks for a type of subatomic particle known as a neutrino. Neutrinos are like electrons, ... Read more
	Neutrino mass: a positive view. Science News; 4/18/1987; Thomsen, Dietrick E.; 403 words ; Neutrino mass: A positive view Consideration of the evidence fromsupernova ... 1987A now leads a number of physicists to conclude that neutrinos probably do have a rest mass, in contrast to previous ... value of about 3.6 electron volts (eV) for a possible neutrino mass. Ramanath Cowsik of Washington University ... Read more
	Evidence of tau neutrino found The Milwaukee Journal Sentinel; 7/21/2000; JOSEPH B. VERRENGIA; 376 words ; Evidence of tau neutrino found 54 scientists track down one ... subatomic particles in nature -- the tau neutrino. The breakthrough, announced Thursday ... Laboratory outside Chicago. The tau neutrino is one of the fundamental building ... Read more
	Going back and forth on neutrino oscillations. Science News; 8/9/1986; Thomsen, Dietrick E.; 1196 words ; Going back and forth on neutrino oscillations Neutrinos came into physics to solve a mystery--the apparent disappearance ... their own nature. The most fundamental of these is whether neutrinos oscillate--that is, whether they change their identities ... Read more
	Sunshine's shadows. (solar neutrinos in Earth's atmosphere) The Economist (US); 6/13/1992; 1215 words ; The highlight of the Neutrino '92 conference was the discovery, made ... in Andalucia, this might not seem like news. Even to a darkened auditorium packed ... to bathe the earth in a fine shower of neutrinos, produced as a byproduct of that fusion ... meaning, though, is unclear. The solar-neutrino mystery ... Read more
	Cosmic turncoats. (missing neutrinos) The Economist (US); 9/22/1990; 944 words ; ... worry about already, physicists have a neutrino shortage to contend with. The fusion ... made of solid lead, most of the sun's neutrinos would swoosh through it regardless-there ... star, nor in laboratories, but in the neutrinos themselves. One of the unexplained curiosities ... Read more

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Free newspaper and magazine articles

	Fundamentals of neutrino physics and astrophysics.(Brief Article)(Book Review) SciTech Book News; 9/1/2007
	On the measurement of the electron-neutrino correlation in neutron beta decay. Journal of Research of the National Institute of Standards and Technology; 7/1/2005
	Supernovas and Black Holes Could Offer Clues to Subatomic Particles.(neutrinos)(Brief Article) USA Today (Magazine); 6/1/2001

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