The first electric motor that was capable of outputting mechanical power was invented by Prussian Moritz Jacobi in May 1834. While his first motor was only capable of generating a small amount of force, his second development was powerful enough to drive a small boat.
Jacobi's second motor took him only four years to develop after introducing the world's first electric motor as proof of the concept. After Jacobi's second motor, it took another six years for anyone to develop an electric motor that produced the same amount of power. Jacobi's inventions paved the way for other scientists to develop more powerful motors and alternators based on his concepts.Learn More
No single person invented algebra. The roots of algebra extend to the ancient Babylonians, who first developed mathematical techniques to solve problems using algorithms. Later work by Greek, Persian and Indian mathematicians further extended these techniques and laid the foundations for modern algebra.Full Answer >
The first sea-worthy boats were thought to have been invented around 800,000 years ago by Homo erectus. In human records, the first sign of a boat was found in a rock carving from approximately 10,000 BCE with depictions of a 20-man reed boat.Full Answer >
Albert Einstein discovered the general theory of relativity. It is one of the two pillars of modern physics, the other being quantum mechanics. He is best known for his mass–energy equivalence formula: E = mc2, which has been dubbed "the world's most famous equation".Full Answer >
Despite an immobilizing disability, Stephen Hawking’s research has changed science’s fundamental understanding of the universe. A prolific writer, he has published numerous scientific papers on theoretical physics and cosmology as well as three best-selling popular books.Full Answer >