Nobel Prize in Physics 2015 announced

Takaaki Kajita of Japan and Arthur McDonald of Canada won the Nobel Prize in physics for experiments showing that neutrinos change identities.

October 06, 2015 03:32 pm | Updated December 04, 2021 11:35 pm IST

The Nobel Prize 2015 in Physics jointly went to Takaaki Kajita from the University of Tokyo and Arthur B. McDonald from Queen's University, Canada.

The Nobel was awarded "for the discovery of neutrino oscillations, which shows that neutrinos have mass”.

"The discovery has changed our understanding of the innermost workings of matter and can prove crucial to our view of the universe," said a press release.

Mr. Kajita discovered that neutrinos from the atmosphere switch between two identities when coming to Japan's Super-Kamiokande neutrino detector.

The 2002 Physics Nobel was awarded “for pioneering contributions for the detection of cosmic neutrinos". >Read about it here .

On the other hand, the research group Mr. McDonald demonstrated that the neutrinos from the Sun were not disappearing on their way to Earth. Instead they were captured with a different identity when arriving to the Sudbury Neutrino Observatory.

"Compared to theoretical calculations of the number of neutrinos, up to two thirds of the neutrinos were missing in measurements performed on Earth. Now, the two experiments discovered that the neutrinos had changed identities. The discovery led to the far-reaching conclusion that neutrinos, which for a long time were considered massless, must have some mass, however small," said the press release.

> Going all out for neutrino research

The late former President A.P.J Abdul Kalam writes about how the India-based Neutrino Observatory can help reclaim India's lead in neutrino research.

>India-based Neutrino Observatory's impact

The neutrino project housed in Bodi Hills, Theni - the largest experimental facility to come up in the country and a chance for cutting-edge research.

Mr. Kajita is director of the Institute for Cosmic Ray Research and professor at the University of Tokyo.

Mr. McDonald is a professor emeritus at Queen’s University in Kingston, Canada.

The winners will share the 8 million Swedish kronor (about $960,000) prize money with one half going to Mr. McDonand and the other to Mr Kajita. Each winner will also get a diploma and a gold medal at the annual award ceremony on Dec. 10, the anniversary of the death of prize founder Alfred Nobel.

Nobel Prize winners, 2015

Arthur McDonald Physics

Mr. McDonald is a professor emeritus at Queen’s University in Kingston, Canada. The research group Mr. McDonald demonstrated that the neutrinos from the Sun were not disappearing on their way to Earth. Instead they were captured with a different identity when arriving to the Sudbury Neutrino Observatory.

Takaaki Kajita Physics

Takaaki Kajita is from the University of Tokyo. Mr. Kajita discovered that neutrinos from the atmosphere switch between two identities when coming to Japan's Super-Kamiokande neutrino detector.

Physiology or MedicinePhysiology or MedicinePhysiology or Medicine
Physiology or Medicine

William C. Campbell

William C. Campbell and Satoshi Ōmura won it for their discoveries concerning a novel therapy against infections caused by roundworm parasites.Their new drug, Avermectin and its derivatives have lowered the incidence of River Blindness and Lymphatic Filariasis

Satoshi Ōmura

William C. Campbell and Satoshi Ōmura won it for their discoveries concerning a novel therapy against infections caused by roundworm parasites.Their new drug, Avermectin and its derivatives have lowered the incidence of River Blindness and Lymphatic Filariasis.

Youyou Tu

Youyou Tu won it for her discoveries concerning a novel therapy for malaria. Youyou Tu discovered Artemisinin, a drug that has significantly reduced the mortality rates for patients suffering from Malaria.
0 / 0
Sign in to unlock member-only benefits!
  • Access 10 free stories every month
  • Save stories to read later
  • Access to comment on every story
  • Sign-up/manage your newsletter subscriptions with a single click
  • Get notified by email for early access to discounts & offers on our products
Sign in

Comments

Comments have to be in English, and in full sentences. They cannot be abusive or personal. Please abide by our community guidelines for posting your comments.

We have migrated to a new commenting platform. If you are already a registered user of The Hindu and logged in, you may continue to engage with our articles. If you do not have an account please register and login to post comments. Users can access their older comments by logging into their accounts on Vuukle.