Editing 1742 in science (section)

==Technology==
* [[Benjamin Robins]] publishes his ''New Principles of Gunnery, containing the determination of the force of gun-powder and an investigation of the difference in the resisting power of the air to swift and slow motions'' in London, containing a description of his [[ballistic pendulum]] and the results of his scientific experiments into improvements in [[ballistics]].<ref>{{cite EB1911 |first=Frederick John |last=Jervis-Smith |wstitle=Chronograph |volume=6 |page=302}}</ref><ref>{{cite book|title=The Elementary Part of A Treatise on the Dynamics of a System of Rigid Bodies|url=https://archive.org/details/elementarypartof00routrich|first=Edward John|last=Routh|year=1905|location=London|publisher=Macmillan}}</ref><ref>{{cite book|last=Ferguson|first=Niall|authorlink=Niall Ferguson|title=Civilization: The West and the Rest|location=London|publisher=Allen Lane|year=2011|isbn=978-1-84614-273-4}}</ref>
* The first large (12 ft [[focal length]]) [[reflecting telescope]] is made, in [[Gregorian telescope|Gregorian]] form, by [[James Short (mathematician)|James Short]], for use by [[Charles Spencer, 3rd Duke of Marlborough]], in London.<ref>[[Museum of the History of Science, Oxford]], inventory 98721 (exhibit label noted 2012).</ref>