Showing posts with label satyendra nath bose. Show all posts
Showing posts with label satyendra nath bose. Show all posts

Thursday 5 July 2012

Satyendra Nath Bose: The 'god particle's' India connect


Scientists at Europe's CERN research centre have found a new subatomic particle that could be the Higgs boson, the basic building block of the universe. The 83-year-old British physicist Peter Higgs, who proposed the existence of the boson which bears his name in the 1960s, was at CERN today, and was clearly overwhelmed. "It is an incredible thing that it has happened in my lifetime," he said.

Much to the discomfort of many scientists, some commentators have labelled this the "God particle." And that indeed it may be. The Higgs boson, which until now has been a theoretical particle, is seen as the key to understanding why matter has mass, which combines with gravity to give an object weight. The idea is much like gravity and Isaac Newton's discovery of it: Gravity was there all the time before Newton explained it.

Interestingly, at CERN, there is a Chola bronze statue of Lord Shiva performing the cosmic dance called "Tandav" - the dance of destruction. Indian scientists are amongst those from 100 other nations working at CERN's atom smasher, the $10 billion Large Hadron Collider on the Swiss-French border, has been creating high-energy collisions of protons to investigate dark matter, anti-matter and the creation of the universe, which many theorize occurred in a massive explosion known as the Big Bang. And India has contributed high-tech equipment worth 30 million dollars and over 100 human years of expert service.

But that's not where the India connect ends. It’s much more fundamental but seems almost forgotten. The boson is named after an Indian physicist, Satyendra Nath Bose - who lived and worked in Kolkata and Dhaka - and was a contemporary of Albert Einstein.

He made important contributions to the field of quantum physics in the 1920s - contributions that changed how particle physics has been  studied ever since. Dr Bose's work on Quantum Mechanics was adopted by Einstein, who extended it to the concept of the Bose-Einstein condensate - a dense collection of bosons, sub-atomic particles with integer spin.

After his  graduation from Presidency College in Kolkata, and Masters from Calcutta University, Bose joined the Physics Department of the university in 1916. In 1921, he moved to the University of Dhaka where set up whole new departments and laboratories to teach Undergraduate and Graduate courses.

Bose moved back to Kolkata in 1945, and continued to research and teach there till his death in 1974. He was awarded the Padma Bhushan, India's second highest civilian award, in 1954.

Ironically, it was a 'mistake' by Bose that laid the foundations of the Bose–Einstein statistics or quantum statistics, as acknowledged by Einstein and Paul Dirac.

Bose wanted to show his students at the Dhaka University that the contemporary theory was inadequate, because it predicted results not in accordance with experimental results. But he committed an error in applying the theory, which unexpectedly gave a prediction that agreed with the experiment. Realising this may not be an error in fact, he fashioned his lecture into an article and sent it off to Albert Einstein - who translated it into German - and had it published in a leading European science journal.

In what may only be termed as a grave oversight, Satyendra Nath Bose was never considered for the Nobel Prize. Yet, at least 10 scientists have been awarded the Nobel for their research in the field of particle physics based on concepts like the Bose-Einstein Condensate or the boson - the last one in 2001, when Eric Allin Cornell, Carl Edwin Wieman and Wolfgang Ketterle were awarded for "the achievement of Bose-Einstein condensation in dilute gases of alkali atoms, and for early fundamental studies of the properties of the condensates."

 (Some parts of this write up have been published on www.ndtv.com)