Regarded as one of the greatest mathematicians of all time, Archimedes invented a method known as Archimedes’ principle. It is a method used for determining the volume of an asymmetrical object. Archimedes of Syracuse was a mathematician, inventor and engineer from Ancient Greece.Know More
Archimedes' principle states that a solid body immersed in a fluid is buoyed up by a force equal to the weight of the fluid displaced by the object. In other words, if the weight of the water displaced is less than the weight of the object, the object will sink. If not, the object will float, with the weight of the displaced water equal to the weight of the object.
One of his well-known inventions was the Archimedes’ screw. This device had a revolving screw-shaped blade inside a cylinder, and it could be turned by hand or by a windmill. This device is still used today for pumping liquids and granulated solids such as grain and coal. In some developing nations, this device is often used for irrigating agricultural fields.
The Archimedes claw was another of Archimedes' inventions. It was a weapon designed to defend the city of Syracuse and was also known as the "ship shaker." The claw consisted of a crane-like arm from which a metal grappling hook was suspended.Learn more about Inventions
Louis Braille created the Braille system in 1824 after trying to improve upon the method being used at the time. Braille began to create his system while studying at the National Institute for Blind Youth.Full Answer >
Italian astronomer Galileo Galilei was the inventor of the first pendulum clock, after his discovery of isochronism, which is the time that the pendulum takes to swing. Contrary to popular belief, Galileo was not the inventor of the telescope; Galileo built a telescope based on creations by the Dutch, and it was known as a spyglass. Galileo also built a thermometer and a compass during his lifetime.Full Answer >
Polish astronomer Nicolas Copernicus, considered the father of modern astronomy, is also, for all intents and purposes, the inventor of the globe. To illustrate his belief that the Earth was spherical, Copernicus built globes and terrain models called armillary spheres. These constructions were the first globes.Full Answer >
The Ancient Egyptians are the well-known constructors of the Pyramids and the Great Sphinx. They invented hieroglyphs, one of the earliest writing systems, and a number system for whole numbers and fractions, including rudimentary algebraic formulations. Egyptians created breath mints, toothpaste, the calendar and bowling. Perhaps their greatest invention, however, was papyrus scrolls, which allowed information to be collected, transported and stored for immediate use or for future generations.Full Answer >