The year 1723 in science and technology involved some significant events.

Geophysics

George Graham discovers diurnal variation in Earth's magnetic field.[1][2]
Antoine de Jussieu publishes De l'Origine et des usages de la Pierre de Foudre on the origins of fossils, prehistoric stone tools and meteorites.[3]

Births

17 February 1723 Birth of Johann Tobias Mayer in Marbach near Stuttgart, Germany, German cartographer, astronomer and physicist (d. 1762)
April 30 - Mathurin Jacques Brisson, French zoologist (d. 1806)
Nicole-Reine Lepaute, French astronomer (d. 1788)

1723 Birth of Johann Georg Palitzsch

Deaths

25 February 1723, Death of Sir Christopher Wren in London, England

August 26 - Anton van Leeuwenhoek, Dutch pioneer of the microscope (b. 1632)

References

^ Graham, George (1724). "An Account of Observations Made of the Variation of the Horizontal Needle at London, in the Latter Part of the Year 1722, and Beginning of 1723". Philosophical Transactions of the Royal Society 33: 96–107.
^ Graham, George (1724). "Observations of the Dipping Needle, Made at London, in the Beginning of the Year 1723". Phil. Trans. 33: 332–339.
^ "Les pierres de foudre". Retrieved 2011-10-18.