optics

Evangelista Torricelli and the Barometer

Evangelista Torricelli and the Barometer

Evangelista Torricelli (1608-1647) On October 15, 1608, Italian physicist and mathematician Evangelista Torricelli was born, best known for his invention of the barometer, but is also known for his advances in Optics. Evangelista Torricelli was born in Rome, the firstborn child of Gaspare Ruberti, a poor textile worker, and Giacoma Torricelli. His family was from Faenza in the Province of Ravenna, then part of the Papal States. His parents sent Evangelista to…
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Peter Barlow and the Barlow Lenses

Peter Barlow and the Barlow Lenses

Peter Barlow (1776 – 1862) On October 13, 1776, British mathematician and physicist Peter Barlow was born. He is still reknown today for his development of two varieties of achromatic (non-colour-distorting) telescope lenses, the so-called Barlow lenses. Despite lacking formal education, Peter Barlow became assistant mathematical master at the Royal Military Academy in Woolwich in 1801. His first research achievements mostly focused on the field of mathematics. His ‘Theory of mathematics’ was published in 1811…
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