Editing 1722 in science

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{{Science year nav|1722}}

The year '''1722 in [[science]]''' and [[technology]] involved some significant events.

==Chemistry==
* [[René Antoine Ferchault de Réaumur]] publishes his work on [[metallurgy]], ''L'Art de convertir le fer forge en acier'', which describes how to convert [[iron]] into [[steel]].

==Exploration==
* April 5 ([[Easter]] Sunday) – [[Jacob Roggeveen]] lands on [[Easter Island]].

==Mathematics==
* [[Abraham de Moivre]] states [[de Moivre's formula]], connecting [[complex numbers]] and [[trigonometry]].

==Meteorology==
* A continuous series of weather records is begun in [[Uppsala]] by [[Anders Celsius]]; it will be maintained for at least 300 years.

==Physics==
* [[Willem 's Gravesande]] publishes experimental evidence that the formula for [[kinetic energy]] of a body in motion is <math>E_k \propto \begin{matrix} \end{matrix} mv^2</math>.

==Technology==
* October – In [[clockmaking]], [[George Graham (clockmaker)|George Graham]] demonstrates that his experiments, begun in December 1721, with [[Mercury (element)|mercurial]] compensation of the [[pendulum]] result in greater accuracy in timekeeping under conditions of variable temperature.<ref>{{cite book|last=Britten|first=F. J.|title=Former Clock & Watchmakers and their Work|year=1894|publisher=E. & F.N. Spon|location=London|url=https://archive.org/details/formerclockwatc00britgoog|pages=[https://archive.org/details/formerclockwatc00britgoog/page/n404 89]–97}}</ref>

==Births==
* May 11 – [[Petrus Camper]], Dutch [[Comparative anatomy|comparative anatomist]] (died [[1789 in science|1789]])
* November 19 – [[Leopold Auenbrugger]], Austrian physician (died [[1809 in science|1809]])
* [[December 28]] &ndash; [[Eliza Lucas]], American agronomist (died 1793)
* [[Thomas Barker (meteorologist)|Thomas Barker]], English meteorologist (died 1809)

==Deaths==
* May 20 – [[Sébastien Vaillant]], French [[botanist]] (born [[1669 in science|1669]])

==References==
{{reflist}}

[[Category:1722 in science| ]]
[[Category:18th century in science]]
[[Category:1720s in science]]