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...nd, if so, how this could be done.<ref name=":1" /> At the end of the 19th century, [[Georg Cantor]] enlarged the mathematical study of infinity by studying [ ...[[Indian mathematics|Jain mathematical]] text Surya Prajnapti (c. 4th–3rd century BCE) classifies all numbers into three sets: [[enumerable]], innumerable, a ...

...irst orbital launches by country#List of first orbital launches by country|9th country to put a domestically built satellite into orbit]] using its [[safi Iranian philosophers and inventors may have created the first batteries (sometimes known as the [[Baghdad Batt ...

...mented battle in the history of the world is the [[Battle of Megiddo (15th century BC)|Battle of Megiddo]].<ref name="Dupay">Trevor N. Dupuy, ''Evolution of W * [[Catapult]] — A Catapult dating to the 19th century B.C was found on the walls of the fortress of [[Buhen]].<ref name="wac">{{C ...

In the 17th century, prototypes of elevators were installed in the palace buildings of England ...elevators in use today. Starting in coal mines, elevators in the mid-19th century operated with [[steam power]], and were used for moving goods in bulk in mi ...

...of the House of Representatives to honor the life and achievements of 19th Century Italian-American inventor Antonio Meucci, and his work in the invention of .... [https://archive.today/20120712220408/http://inventors.about.com/library/inventors/bl_Alessandro_Volta.htm Alessandro Volta - Biography of Alessandro Volta - ...