The first internal combustion engine was invented by the French engineer J.J. Etienne Lenoir in 1859. It was a gasoline engine with an ignition system. The engine was able to run continuously.Know More
There were earlier attempts to build an internal combustion engine, such as the engine built by the Dutch physicist Christian Huygens in 1680. This was a cumbersome device and did not work on gasoline as gasoline was yet to be discovered.
In 1888, Nikolaus Otto built the first successful four-stroke engine. In that same year, Sir Dougald Clerk built the first two-stroke engine. In 1891, Joseph Day made changes to this engine invented by Sir Dougald Clerk, and it became commercially successful.Learn more about Inventions
Yogurt has been part of the human diet since around 6000 to 5000 B.C and was first made in Central Asia. Yogurt sold in its frozen form was invented in the early 1970s by a dairy operator from New England named H.P. Hood.Full Answer >
StyleList claims that Egyptians invented the first version of the flip-flop sandal around 4000 B.C. The oldest existing pair of flip-flops is on display at the British Museum.Full Answer >
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 >
Several products and procedures were invented in 1974. One example is the Post-It Note, which was created by American Arthur Fry. Since their invention, Post-It Notes have been sold in over 100 countries across the world and are still used over 40 years later.Full Answer >