Although a lot of material is available in the form of biographies and writings of scientists, very little information is found on what made these scientists not only great discovers but humane too, blessed with humour, humility and humanism like us, the lesser known mortals. Science is in a continuous state of progression, and those involved in this unique adventure bring out the modes and methods of their investigation. The basic discoveries of scientific investigation have been discussed in different essays in this book with the hope that the layman may achieve 'scientific literacy', even if it is in a small measure