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2000 BC: Water clock by at least the old Babylonian period (c. 2000 – c. 1600 BC), [191] but possibly earlier from Mohenjo-Daro in the Indus Valley. [192] 2000 BC: Chariot in Russia and Kazakhstan [193] 2000 BC: Fountain in Lagash, Sumer. 2000 BC: Scissors, in Mesopotamia. [194] 1850 BC: Proto-alphabet (Proto-Sinaitic script) in Egypt. [195]
The Mars Exploration Rovers have provided vast amounts of information by functioning well beyond NASA's original estimates. Using the Wilkinson Microwave Anisotropy Probe, scientists studying the universe measured that its age is 13.77 billion years; "solidly supported" that it has been expanding and cooling since the Big Bang; and calculated that the universe is composed of about 4.6% atoms ...
The modern-day provisions of the law applied to inventions are laid out in Title 35 of the United States Code (Ch. 950, sec. 1, 66 Stat. 792). From 1836 to 2011, the United States Patent and Trademark Office (USPTO) has granted a total of 7,861,317 patents [ 7 ] relating to several well-known inventions appearing throughout the timeline below.
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
Researchers at the University of Georgia have been recognized by Time magazine as having one of the best inventions of 2023.
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.
Nature has always been a powerful source of inspiration, with inventors diving into the world around them for new ideas. From the anatomy of animals to the behavior of plants, some of our most ...
1995–2000 – Econophysics and Kinetic exchange models of markets; 1997 – Juan Maldacena proposed the AdS/CFT correspondence; 1998 – Accelerating expansion of the universe discovered by the Supernova Cosmology Project and the High-Z Supernova Search Team; 1998 – Atmospheric neutrino oscillation established
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