SCIENCE

        Nikola Tesla was an engineer known for designing the alternating-current(AC)electric system which is still the predominant electrical system used across the World today. He also created the "Tesla coil" which is still used in radio technology.                 Tesla designed the alternating-current electrical system which would quickly become the preeminent power system of the 20th century and has remained the worldwide standard ever since. In 1887, Tesla found funding for his new Tesla Electric Company and by the end of the year he had successfully filed several patents for AC-based inventions.        

          Louis Pasteur was a French microbiologist and chemist who discovered the pasteurisation and rabies vaccine.        Pasteur discovered to prevent milk spoilage. This method name is pasteurisation. Pasteurisation; milk heat with high temperature and suddenly refrigerate. We still use this method so we can keep milk for a long time.         Pasteur discovered rabies vaccine. Pasteur tried vaccine primarily on rabbits. Pasteur did experiment with 11 dog. One day he had to try vaccine on a child. Then the child got well and then the child started to work with Pasteur to appreciation.   

                Albert Einstein was a German mathematician and physicist who developed the special and general theories of relativity. He won the Nobel Prize for physics for his explanation of the photoelectric effect in 1921.         Einstein had many discoveries but he is best known for his theory of relativity and the equation E=m.c2.         E=m.c2; energy of a body (E) is equal to the mass (m) of that body times the speed of lights squared (c2). This equation suggested that tiny particles of mattes could be converted into huge amounts of energy a discovery that heralded atomic power. Famed quantum theorist Max Planck backed up the assertions of Einstein who thus became a star of the lecture circut and academia taking on various positions before becoming director of the Kasier Wilhelm Institute for physics from 1913 to 1933.