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By the 4th century: The present Hindu–Arabic numeral system with place-value numerals develops in Gupta-era India, and is attested in the Bakhshali Manuscript of Gandhara [broken anchor]. [74] The superiority of the system over existing place-value and sign-value systems arises from its treatment of zero as an ordinary numeral.
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.
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 ...
Download as PDF; Printable version; In other projects ... For a timeline of events from 1945 to 2000, ... A Concise Reference History from 1760 to the Present (1970) ...
4th century: Simple suspension bridge, independently invented in Pre-Columbian South America, and the Hindu Kush range, of present-day Afghanistan and Pakistan. With Han dynasty travelers noting bridges being constructed from 3 or more vines or 3 ropes. [308] Later bridges constructed utilizing cables of iron chains appeared in Tibet. [309] [310]
The historical application of biotechnology throughout time is provided below in chronological order.. These discoveries, inventions and modifications are evidence of the application of biotechnology since before the common era and describe notable events in the research, development and regulation of biotechnology.
English inventions and discoveries are objects, processes or techniques invented, innovated or discovered, partially or entirely, in England by a person from England. Often, things discovered for the first time are also called inventions and in many cases, there is no clear line between the two. Nonetheless, science and technology in England ...
Timeline of computing presents events in the history of computing organized by year and grouped into six topic areas: predictions and concepts, first use and inventions, hardware systems and processors, operating systems, programming languages, and new application areas.