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Jean-Charles-Athanase-Peltier and the Peltier Effect

Jean-Charles-Athanase-Peltier and the Peltier Effect

Harald Sack
On October 27, 1845, French physicist Jean Charles Athanase Peltier passed away. Peltier is best known today for the introduction of the eponymous Peltier effect, a thermoelectrical effect, i.e. the presence of heating or cooling at an electrified junction of two different conductors, as well as for the electrostatic induction. Jean Charles Athanase Peltier – Early Years as Clockmaker Peltier was born to a poor family; his father earned a living as a…
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medical science
Wilhelm His and the Invention of the Microtome

Wilhelm His and the Invention of the Microtome

Tabea Tietz
On July 9, 1831, Swiss anatomist Wilhelm His, Sr. was born. His became known for the invention of the microtome, a tool used to cut extremely thin slices of material (even though others were also credited with the invention). By treating animal flesh with acids and salts to harden it and then slicing it very thinly with the microtome, scientists were able to further research the organization and function of tissues and…
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