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Pages in category "20th-century inventions" The following 126 pages are in this category, out of 126 total. This list may not reflect recent changes. A.
About 40 million tons of PVC are produced each year. [9] ... In the early 20th century, ... Since June 2011, ...
The Lower Paleolithic period lasted over 3 million years, during which there many human-like species evolved including toward the end of this period, Homo sapiens.The original divergence between humans and chimpanzees occurred 13 (), however interbreeding continued until as recently as 4 Ma, with the first species clearly belonging to the human (and not chimpanzee) lineage being ...
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 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.
40.000 BC: The oldest confirmed sculptures in the world, the 41,000 to 39,000-year-old Lion Man [59] and the 42,000 to 41,000-year-old Venus of Hohle Fels [60] [61] 15th century: Drypoint by the Housebook Master, a south German artist [62] 1525: Ray tracing by Albrecht Dürer [63] 1642: Mezzotint by Ludwig von Siegen
The structure of DNA was determined in 1953 by James Watson, [3] [4] Francis Crick, [3] [4] Rosalind Franklin [4] and Maurice Wilkins, [3] [4] following by developing techniques which allow to read DNA sequences and culminating in starting the Human Genome Project (not finished in the 20th century) and cloning the first mammal in 1996.
2 Pre-20th century. 3 20th century. 4 21st century. ... 1999 – Discovery of ... 2010-Over the past two decades, a considerable focus has been directed toward ...