To mark the 123rd birth anniversary of Nobel Laureate Sir C.V. Raman, Smt. Shanta and Kripashankar Charitable Trust, in association with Nehru Children's Cultural Association, Thiruvanmiyur, organised a lecture demonstration classes on Physics at the IIT-Madras recently.
T. Kripashankar, Managing Trustee, Smt. Shanta and Kripashankar Charitable Trust, welcomed the gathering.
T.L. Shankar former Principal Secretraty to Department of Energy, Government of India presided over the function. Sir C.V. Raman Award cash prizes totally worth Rs.17,000 were presented to talented students on the occasion.
S. Srinivasan, former professor of Physics, IIT-Madras, spoke on the eminence of Sir C.V. Raman.
T.S. Natarajan, professor of Physics, IIT-Madras, gave a lecture-demonstration.
He performed experiments in Physics using easily available objects.
He dipped a rubber ball in liquid Nitrogen and showed that rubber can turn into glass below a certain temperature known as Glass Transition Temperature.
He also demonstrated the concept of elastic collision with a tiny ping pong ball (tennis ball) and a foot ball. When dropped to the ground separately, they bounced to the same height.
When the tennis ball was kept over the football and the two were dropped together to the floor, the tennis ball jumped to a height greater than the level from which it was dropped.
He explained the physics behind it in simple words without materials.
Using just a coil, a magnet and a Galvanometer, he demonstrated the principle of electromagnetic induction and related how electrical power is generated in power stations including atomic power plants.
He also explained the concepts of Bernoulli's Principle, using a funnel, ping pong ball and an air blower.
Using a Plasma lamp which is called the Tesla Coil in scientific technology, he showed the lighting of a neon lamp and a fluorescent tube by high frequency electrical pulses.
M.R. Sugumaran, president of the Nehru Children's Cultural Association, proposed a vote of thanks.
The Lec-Dem on Physics was organised at the IIT-Madras recently.