The wedge, one of the six classical simple machines, has been used from the very beginning of humankind's tool-making era, approximately 2.6 million years ago. As such, no single attributed inventor has been identified.
An early form of the wedge was the hand-axe, found to be crafted in the early Paleolithic age by chipping away at a rock to form a sharp edge. The mechanical advantage of a wedge is equal to the ratio of the length of its slope to the width; a longer and skinnier wedge requires less force, so it's more effective for splitting an object than a shorter and wider wedge.Learn More
The history of forks goes back to the time of the Greeks, although it is unknown if a specific individual invented them. Original forks were large with two tines used to carve and serve meat. The tines kept meat from moving around during carving.Full Answer >
Eugene Schueller is credited as the inventor of the first permanent and commercial hair dye in the year 1907. Schueller called the dye Oreal, and his product would later grow into the company known today as L'Oreal.Full Answer >
The American football was not invented by any one person. Rather, the football developed over time as the rules of the game evolved and manufacturing techniques advanced.Full Answer >
The invention of the first mobile phone was on April 3, 1973, and was from Motorola. At the time, the cost of the phone ran at $3,995.Full Answer >