Man constantly tries to make human life happy. He has made his daily life enjoyable by making new inventions by science. Science has transformed the universe by performing many miracles. It has made mans beautiful fantasy of heaven come true on earth itself. Science has brought amazing changes in the personal social and economic life of man. The miracles of science have ended the distances of the world. The progress that could not be made in thousands of years has happened in the last 150 years. If a man of two hundred years ago comes to earth, then he will find this imaginary world. The life style of man has changed due to the invention of electricity. The dark nights are illuminated by the light of electric bulbs and tube lights. Coolers, fans and air conditioners have quelled the heat of summer. All the kitchen work is being done by electrical appliances. Television, telephone, fax computer, internet etc. have made the world smaller. The revolution has come through these mediums. With electric machines a job used to be done by several hundred people is done in a short amount of time. Hours of work gets done in minutes in the blink of an eye. Today big industries are equipped with automatic machines. The work is done automatically at the press of the button. Whether there are factories for food items or the work of making clothes, utensils etc. all are done by machines. The volume of production in the industries has increased. Revolutionary changes have come in the field of transport. Science has completely changed the bullock cart era. Vehicles are moving at high speed on the roads. Airplanes carrying thousands of passengers have started flying in the sky. Man has started traveling in space by ripping the gravity of the earth. Science has brought unprecedented changes in the medical world. Transplantation of all the organs of the body has started. Science has also taken the art of printing to a new level. Science has affected every area of the daily life of man. It has given all the happiness to man. If there was no science, then the daily life of man would not have been so pleasant.