SCIENCE

        Thomas Alva Edison was an American inventor who is considered one of America's leading businessmen. Edison rose from humble beginnings to work as an inventor of major technology including the first commercially viable incandescent light bulb.         Thomas Edison's inventions included the telegraph, the universal stock ticker, the phonograph, the first commercially practical incandescent electric light bulb, alkaline storage batteries and the Kinetograph.

        Charles Robert Darwin  was a naturalist and biologist known for his theory of evolution and the process of natural selection.         Darwin's theory of evolution declared that species survived through a process called "natural selection" where those that successfully adapted or evolved to meet the changing requirements of their natural habitat thrived while those that failed to evolve and reproduce died off. Through his observations and studies of birds, plants and fossils. Darwin noticed similarities among species all over the globe along with variations based on specific locations leading him to believe that the species we know today had gradually evolved from common ancestors. Darwin's theory of evolution and the process of natural selection later became known simply as "Darwinism".

        Galileo Galilei was an Italian astronomer, mathematician, philosopher and professor who made pioneering observations of nature with long-lasting implications for the study of physics. He also constructed a telescope and supported the Copernican theory which supports a sun-centered Solar System. Galileo was accused twice of heresy by the church for his beliefs and wrote a number of boks on his ideas.         In July 1609, Galileo Galilei learned about a simple telescope built by Dutch eyeglass makers and soon developed one of his own. In August, he demonstrated it to some Venetian merchants who saw its value for spotting ships and gave Galileo a salary to manufacture several of them.           Galileo’s ambition pushed him to go further, and in the fall of 1609 he made the fateful decision to turn his telescope toward the heavens. Using his telescope to explore th...

        Isaac Newton was a English physicist, mathematician, astronomer, inventor, philosopher, theologian who discovered the gravity.         Isaac Newton layed the foundations classic mathematic and put forth 3 movement law. His best known equation F=m.a. F=m.a; F=force, m=mass and a=acceleration.         Newton discovered the gravity but he couldn't explain for a long time because he hated under attack.

        Wilhelm Conrad Roentgen was a Nobel-winning German scienist who credited with he discovery of X-rays.         In 1895 while experimenting with electric current flow in a cathode-ray tube, Wilhelm Conrad Roentgen observed that a nearby piece of barium platinocyanide gave off light when the tube was in operation. In view of its uncertain nature, he called the phenomenon X-radiation(also roentgen radiation). He took the first X-ray photographs:interiors of metal objects and of the bones on his wife's hand.

        Marie Cruie was a French chemist. She was the first women who professor. She won the Nobel Priz e. She was the first women who won the Nobel Prize. She had 2 Nobel Prize also that was the first time for history.         She worked on radioactivity. Radioactivity unit of cruie. She discovered polonium and radium.She passed away. After her death people said "She died for science."

        Dmitri Mendeleyev was a Russian chemist who found periodic law. As a proffesor Mendeleyev taught first at the St. Petersburg Technological Institute and then at the Universty of St. Petersburg where he remained trough 1890. Realizing he was in need of quality textbook to cover the subject of inorganic chemistry, he put together one of his own The Principles of chemistry.         While he was resarching and writing that book in the 1860s, Mendeleyev made the discovery that led to his most famous achievement. He noticed certain recurring patterns between different groups of elements and using existing knowledge of the elements' chemical and physical properties he was able to make further connections. He systematically arranged the dozens of known elements by atomic weight in a grid-like digram; following this system he could even predict the qualities of still-unknown elements. In 1869, Mendeleyev formally p...

        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.