2015 Nobel prize in physics: Canadian Arthur B. McDonald shares win with Japan's Takaaki Kajita
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http://www.cbc.ca/news/technology/nobel-prize-physics-2015-1.3258178
Arthur McDonald, a professor emeritus at Queen's University in Kingston, Ont., is the co-winner of the 2015 Nobel Prize in physics.
McDonald will share the prize with Takaaki Kajita of the University of Tokyo.
The winners were announced by a committee at the Royal Swedish Academy of Sciences in Stockholm on Tuesday. McDonald and Kajita will split the 800,000 Swedish kronor (almost $1.3 million Cdn) prize.
The academy said the two men won the prize for their contributions to experiments demonstrating that neutrinos change identities.
The metamorphosis requires that neutrinos have mass, the academy said, adding that the discovery has changed our understanding of the innermost workings of matter.
Takaaki Kajita of Japan, director of the Institute for Cosmic Ray Research and professor at the University of Tokyo, attends a press conference Tuesday after learning he won the Nobel Prize for physics. (Eugene Hoshiko/Associated Press)
Working at the Super-Kamiokande detector in Japan, Kajita, in 1998, showed that neutrinos captured at the detector underwent a metamorphosis in the atmosphere.
Meanwhile, researchers at the Sudbury Neutrino Observatory, as also known as SNOLAB, where looking at neutrinos that come from the sun. McDonald, who has been director of the observatory since 1989, discovered in 2001 that those neutrinos from the sun also changed their identities.
'Eureka moment'
"Yes, there certainly was a Eureka moment in this experiment when we were able to see that neutrinos appeared to change from one type to the other in travelling from the Sun to the Earth," McDonald told reporters by telephone from his home in Kingston.
If you don't know whether neutrinos have mass, it is difficult to understand how to incorporate them into basic theories of fundamental physics, so finding that they have mass helps in that regard, McDonald said.
He also said scientists still want to know what the actual mass of the neutrino is, and whether there are other types beyond the three currently known.
Arthur McDonald, a professor emeritus at Queen's University in Kingston, Ont., is the co-winner of the 2015 Nobel Prize in physics.
McDonald will share the prize with Takaaki Kajita of the University of Tokyo.
The winners were announced by a committee at the Royal Swedish Academy of Sciences in Stockholm on Tuesday. McDonald and Kajita will split the 800,000 Swedish kronor (almost $1.3 million Cdn) prize.
The academy said the two men won the prize for their contributions to experiments demonstrating that neutrinos change identities.
The metamorphosis requires that neutrinos have mass, the academy said, adding that the discovery has changed our understanding of the innermost workings of matter.
Takaaki Kajita of Japan, director of the Institute for Cosmic Ray Research and professor at the University of Tokyo, attends a press conference Tuesday after learning he won the Nobel Prize for physics. (Eugene Hoshiko/Associated Press)
Working at the Super-Kamiokande detector in Japan, Kajita, in 1998, showed that neutrinos captured at the detector underwent a metamorphosis in the atmosphere.
Meanwhile, researchers at the Sudbury Neutrino Observatory, as also known as SNOLAB, where looking at neutrinos that come from the sun. McDonald, who has been director of the observatory since 1989, discovered in 2001 that those neutrinos from the sun also changed their identities.
'Eureka moment'
"Yes, there certainly was a Eureka moment in this experiment when we were able to see that neutrinos appeared to change from one type to the other in travelling from the Sun to the Earth," McDonald told reporters by telephone from his home in Kingston.
If you don't know whether neutrinos have mass, it is difficult to understand how to incorporate them into basic theories of fundamental physics, so finding that they have mass helps in that regard, McDonald said.
He also said scientists still want to know what the actual mass of the neutrino is, and whether there are other types beyond the three currently known.
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最近一次应该是Alice Monro那次了
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据说加拿大已经有17位诺奖得主了。
诺奖揭秘。讲得深入浅出，有兴趣的可以读读。
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