November 13, 2019
दिल्ली में प्रदूषण का स्तर फिर गंभीर स्तर पर पहुंच गया है
Arthur Ashkin of the United States won one half of the nine million Swedish kronor (about $1.01 million or 870,000 euros) prize, while Gerard Mourou of France and Donna Strickland of Canada shared the other half.
Ashkin, 96, was honoured for his invention of “optical tweezers” that grab particles, atoms, viruses and other living cells with their laser beam fingers.
With this he was able to use the radiation pressure of light to move physical objects, “an old dream of science fiction,” the Royal Swedish Academy of Sciences said.
Meanwhile Mourou, 74, and Strickland — only the third woman to win the Physics Prize — won for together developing a method to generate ultra-short optical pulses, “the shortest and most intense laser pulses ever created by mankind,” the jury said.
On Monday, two immunologists, James Allison of the US and Tasuku Honjo of Japan, won this year’s Nobel Medicine Prize for research into how the body’s natural defences can fight cancer.