Editing 1675 in science

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The year '''1675 in [[science]]''' and [[technology]] involved some significant events.

==Astronomy==
* March 4 – [[John Flamsteed]] appointed as "astronomical observator", in effect, the first [[Astronomer Royal]] of [[England]].<ref>{{cite book|last=Palmer|first=Alan|last2=Palmer |first2=Veronica|year=1992|title=The Chronology of British History|publisher=Century Ltd|location=London|pages=191–192|isbn=0-7126-5616-2}}</ref><ref>{{cite web|first=Frances|last=Willmoth|title=Flamsteed, John (1646–1719)|work=[[Oxford Dictionary of National Biography]]|publisher=Oxford University Press|year=2004|url=http://www.oxforddnb.com/view/article/9669|accessdate=2011-02-04}} {{ODNBsub}}</ref>
* August 10 – King [[Charles II of England]] places the foundation stone of the [[Royal Greenwich Observatory]] near [[London]].
* [[Giovanni Domenico Cassini|Giovanni Cassini]] discovers the Cassini Division in the  [[rings of Saturn]].

==Exploration==
* April – The [[Antarctic Convergence]] is first crossed by English merchant [[Anthony de la Roché]], who lands on [[South Georgia and the South Sandwich Islands#South Georgia|South Georgia]].<ref>{{cite book|first=Robert|last=Headland|title=The Island of South Georgia|edition=2nd|publisher=Cambridge University Press|year=1992|isbn=0-521-42474-7}}</ref>

==Mathematics==
* October 29 – German polymath [[Gottfried Leibniz]] makes the first use of the long s (∫) as a symbol of the integral in calculus.
* November 11 – Leibniz uses [[infinitesimal calculus]] for the first time to find the area under the graph of the [[Function (mathematics)|function]] ''y=f(x)''.

==Physiology and medicine==
* [[Antonie van Leeuwenhoek]] begins to use a [[microscope]] for observing  human tissues and liquids.

==Technology==
* February 25 – Netherlands scientist [[Christiaan Huygens]] files drawings of his invention of the [[balance spring]], the key component to the accuracy of portable clocks and pocket watches, in a letter to the ''Journal des Sçavants''.

==Births==
* February 28 – [[Guillaume Delisle]], French [[cartographer]] (died [[1726 in science|1726]])

==Deaths==
* October – [[James Gregory (mathematician)|James Gregory]], [[Scottish people|Scottish]] [[mathematician]] and [[astronomer]] (born [[1638 in science|1638]])
* October 27 – [[Gilles de Roberval]], [[French people|French]] mathematician (born [[1602 in science|1602]])
* November 11 – [[Thomas Willis]], [[English people|English]] [[physician]] (born [[1621 in science|1621]])
* ''approx. date'' – [[John Jonston]], [[Polish–Lithuanian Commonwealth|Polish]] [[naturalist]] and physician (born [[1603 in science|1603]])

==References==
{{reflist}}

[[Category:1675 in science| ]]
[[Category:17th century in science]]
[[Category:1670s in science]]