Search results
Results From The WOW.Com Content Network
Timeline of Indian innovation encompasses key events in the history of technology in the subcontinent historically referred to as India and the modern Indian state.. The entries in this timeline fall into the following categories: architecture, astronomy, cartography, metallurgy, logic, mathematics, metrology, mineralogy, automobile engineering, information technology, communications, space ...
Single roller cotton gin – The Ajanta Caves of India yield evidence of a single roller cotton gin in use by the 5th century. [66] This cotton gin was used in India until innovations were made in form of foot powered gins. [67] The cotton gin was invented in India as a mechanical device known as charkhi, more technically the "wooden-worm ...
13th century: Earliest documented snow goggles, a type of sunglasses, made of flattened walrus or caribou ivory are used by the Inuit peoples in the arctic regions of North America. [361] [362] In China, the first sunglasses consisting of flat panes of smoky quartz are documented. [363] [364] 13th century - 14th century: Worm gear cotton gin in ...
Scientists from India also appeared throughout Europe. [134] By the time of India's independence colonial science had assumed importance within the westernized intelligentsia and establishment. French astronomer, Pierre Janssen observed the Solar eclipse of 18 August 1868 and discovered helium, from Guntur in Madras State, British India. [134]
The timeline begins at the Bronze Age, as it is difficult to give even estimates for the timing of events prior to this, such as of the discovery of counting, natural numbers and arithmetic. To avoid overlap with timeline of historic inventions , the timeline does not list examples of documentation for manufactured substances and devices unless ...
In 1641, the first patent in North America was issued to Samuel Winslow by the General Court of Massachusetts for a new method of making salt. [ 1 ] [ 2 ] [ 3 ] On April 10, 1790, President George Washington signed the Patent Act of 1790 (1 Stat. 109) into law which proclaimed that patents were to be authorized for "any useful art, manufacture ...
Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!
Download as PDF; Printable version; In other projects ... Timeline of the COVID-19 pandemic in India (January–May 2020) Timeline of the COVID-19 pandemic in India ...