Science Day

2027 Words Jul 26th, 2011 9 Pages
National Science Day
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Introduction
History
Time to celebrate
Introduction:

Rashtriya Vigyan Evam Prodoyogiki Sanchar Parishad (RVPSP) (National Council for Science & Technology Communication) of the Ministry of Science and Technology celebrates National Science day (NSD) to popularise the benefits of scientific knowledge and pratical appropriation.

Various activities are organized on the day like debates, quiz competitions, exhibitions, lectures, etc., in which college students, school students and teachers too participate.

Every year a different theme is selected and all the forth programmes and activities are based around that theme.

The day is celebrated to honour Nobel laureate Sir C.V. Raman for his invention of
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The blue light from the sky would thus be light-scattered to the sides, while the reddish light would be light that passes through the lower layers of the atmosphere and which has become impoverished in blue rays owing to scattering. Later, in 1899, Rayleigh threw out the suggestion that the phenomenon in question might be due to the fact that the molecules of air themselves exercised a scattering effect on the rays of light.
In 1914 Cabannes succeeded in showing experimentally that pure and dustless gases also have the capacity of scattering rays of light.
But a closer examination of scattering in different substances in solid, liquid, or gaseous form showed that the scattered light did not in certain respects exactly follow the laws which, according to calculation, should hold good for the Tyndall effect. The hypothesis which formed the basis of this effect would seem to involve, amongst other things, that the rays scattered to the sides were polarized. This, however, did not prove to be exactly the case.
This divergence from what was to be expected was made the starting point of a searching study of the nature of scattered light, in which study Raman was one of those who took an active part. Raman sought to find the explanation of the anomalies in asymmetry observed in the molecules. During these