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.[1][2]
- August 10 – King Charles II of England places the foundation stone of the Royal Greenwich Observatory near London.
- 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.[3]
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 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)
Deaths
- October – James Gregory, Scottish mathematician and astronomer (born 1638)
- October 27 – Gilles de Roberval, French mathematician (born 1602)
- November 11 – Thomas Willis, English physician (born 1621)
- approx. date – John Jonston, Polish naturalist and physician (born 1603)
References
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