Percy Julian invented the fire extinguisher, Aero-Foam. It was extensively used during World War II, and was referred to as the United States Navy's "bean soup." More »

T.J. Marshall is credited with improving the design of the fire extinguisher, with a patent issued on March 26, 1872. He invented a system in which water is pumped through pipes in buildings to individual sprinkler heads... More »

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 g... More »

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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 r... More »

Albert Einstein worked in the fields of mathematics and physics, and most of his contributions were in terms of academic theory. There is, however, a refrigerator that bears his name, and he had also developed a compass,... More »

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 inv... More »