Nobel prize history

Masatoshi Koshiba ( Koshiba Masatoshi, born on September 19, in Toyohashi, Aichi Prefecture -) is a Japanese physicist who won the Nobel Prize in Physics in

Dr. Koshiba graduated from University of Tokyo, School of Science in He received a Ph.D in physics at the University of Rochester, New York, in In he won Nobel Prize in Physics "for pioneering contributions to astrophysics, in particular for the detection of cosmic neutrinos".

He is now Senior Counselor of ICEPP and Emeritus Professor of University of Tokyo.

Koshiba earned a Ph.D.

Masatoshi koshiba biography of mahatma gandhi The medical unit commanded by Gandhi operated for less than two months before being disbanded. However, the Hindu leaders including Rabindranath Tagore questioned Gandhi's leadership because they were largely against recognising or supporting the Sunni Islamic Caliph in Turkey. Gandhi adopted the short dhoti woven with hand-spun yarn as a mark of identification with India's rural poor. The third lepton, the tau, was not discovered until

from the University of Rochester in New York in He then joined the University of Tokyo, where he became professor in and emeritus professor in From to Koshiba taught at Tokai University.

Koshiba's award-winning work centred on neutrinos, subatomic particles that had long perplexed scientists. Since the s it had been suspected that the Sun shines because of nuclear fusion reactions that transform hydrogen into helium and release energy.

Later, theoretical calculations indicated that countless neutrinos must be released in these reactions and, consequently, that Earth must be exposed to a constant flood of solar neutrinos. Because neutrinos interact weakly with matter, however, only one in a trillion is stopped on its way to Earth. Neutrinos thus developed a reputation as being undetectable.

In the s Koshiba, drawing on the work done by Raymond Davis Jr, constructed an underground neutrino detector in a zinc mine in Japan.

Masatoshi koshiba biography of mahatma gandhi for kids Churchill's bitterness against Gandhi grew in the s. Archived from the original on 26 December Contemporary issues in development economics. Schein was a cosmic ray physicist who had shown in , using balloon flights, that the primary cosmic rays were mostly protons.

Called Kamiokande II, it was an enormous water tank surrounded by electronic detectors to sense flashes of light produced when neutrinos interacted with atomic nuclei in water molecules. Koshiba was able to confirm Davis's results—that the Sun produces neutrinos and that fewer neutrinos were found than had been expected (a deficit that became known as the solar neutrino problem).

In Kamiokande also detected neutrinos from a supernova explosion outside the Milky Way. After building a larger, more sensitive detector named Super-Kamiokande, which became operational in , Koshiba found strong evidence for what scientists had already suspected—that neutrinos, of which three types are known, change from one type into another in flight.

Prof.

Koshiba is a member of the Board of Sponsors of The Bulletin of the Atomic Scientists[1].

Links