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                                                                                                                          By~Tarachand Tak  In 1637 Descartes gave the corpuscular model of light and derived Snell’s law. It explained the laws of reflection and refraction of light at an interface.  The corpuscular model predicted that if the ray of light (on refraction) bends towards the normal then the speed of light would be greater in the second medium. This corpuscular model of light was further developed by Isaac Newton in his famous book entitled OPTICKS. In 1678, the Dutch physicist Christiaan Huygens put forward the wave theory of light – it is this wave model of light, wa...

 Since its invention a little over 130 years ago, the interview has become a commonplace of journalism. Today, almost everybody who is literate will have read an interview at some point in their lives, while from the other point of view, several thousand celebrities have been interviewed over the years, some of them repeatedly. So it is hardly surprising that opinions of the interview — of its functions, methods and merits — vary considerably. Some might make quite extravagant claims for it as being, in its highest form, a source of truth, and, in its practice, an art. Others, usually celebrities who see themselves as its victims, might despise the interview as an unwarranted intrusion into their lives, or feel that it somehow diminishes them, just as in some primitive cultures it is believed that if one takes a photographic portrait of somebody then one is stealing that person’s soul. V. S. Naipaul ‘feels that some people are wounded by interviews and lose a part of themselves,’ ...