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4000 BC: Probable time period of the first diamond-mines in the world, in Southern India. [125] 4000 BC: Paved roads, in and around the Mesopotamian city of Ur, Iraq. [126] 4000 BC: Plumbing. The earliest pipes were made of clay, and are found at the Temple of Bel at Nippur in Babylonia. [127] [b]
Heron (c. 10–70), Roman Egypt – usually credited with invention of the aeolipile, although it may have been described a century earlier; John Herschel (1792–1871), UK – photographic fixer (hypo), actinometer; Harry Houdini (1874–1926) U.S. – flight time illusion; Heinrich Hertz (1857–1894), Germany – radio telegraphy ...
1838: Matthias Schleiden: all plants are made of cells. 1838: Friedrich Bessel: first successful measure of stellar parallax (to star 61 Cygni). 1842: Christian Doppler: Doppler effect. 1843: James Prescott Joule: Law of Conservation of energy (First law of thermodynamics), also 1847 – Helmholtz, Conservation of energy.
From the first Apple computer to the COVID-19 vaccine, here are the most revolutionary inventions that were born in the U.S.A. in the past half-century.
The 100 known most prolific inventors based on worldwide utility patents are shown in the following table. While in many cases this is the number of utility patents granted by the United States Patent and Trademark Office, it may include utility patents granted by other countries, as noted by the source references for an inventor.
Public Domain. Henry Ford is known for many things — the most prominent being mass-manufactured cars and paying workers respectable wages. But his first automobile, made in 1896, was powered by ...
The following articles cover the timeline of United States inventions: Timeline of United States inventions (before 1890), before the turn of the century; Timeline of United States inventions (1890–1945), before World War II; Timeline of United States inventions (1946–1991), during the Cold War
A. Gas centrifuge; A Manufacturing Language; Abel Axe; Aberdeen chronograph; Abraham Lincoln's patent; Acrylic paint; Active Denial System; Active pen; Active-pixel sensor