Did you know that Alexander Graham Bell, known for inventing the telephone, actually considered his greatest invention to be the photophone, a wireless telephone that transmitted sound on a beam of light? Thomas Edison, often credited with inventing the light bulb, actually perfected the design and made it commercially viable. The first light bulb was actually created by British inventor Humphry Davy in 1809. Marie Curie, the first woman to win a Nobel Prize and the only person to win Nobel Prizes in two different scientific fields, discovered the elements polonium and radium. Her groundbreaking research laid the foundation for the development of X-ray technology. Nikola Tesla, a pioneer in electrical engineering, is known for his contributions to the development of alternating current (AC) electrical systems. Despite his many inventions and discoveries, Tesla never won a Nobel Prize. Albert Einstein, one of the most famous scientists in history, is best known for his theory of relativity, which revolutionized our understanding of space, time, and gravity. Einstein's iconic equation, E=mc^2, describes the relationship between energy and mass. These famous scientists and their inventions have profoundly shaped the world we live in today, demonstrating the power of human ingenuity and innovation in the fields of science and technology.