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Anatomy lesson at the medical college, XVII century
Anatomy lesson at the University medical college, year 1616
“A classroom from XVI century”, by Hans Burgkmair (1473-1531)
As the illustration is from “Schimpf und Ernst” (“”Amusing and serious stories”, by Johannes Pauli,1455-1533?), there is still hope that it is a caricature rather than a realistic depiction of schooling in XVI century…
Students talking together, Leipzig early XIX century
Leipzig students, years 1820-1830
Battery – Daniell cell – section and working asset
Middle ‘800 battery: an electric cell that produces electricity from a chemical reaction. The first battery was invented by Alessandro Volta in 1800 and then improved by Daniell in 1836
Fresnel lens (lighthouse lens) working and section
Wood engraving drawn by A. Jahandier, engraved by C. Laplante, taken from from “L’èlectricitè” by J. Baille, Paris – Hachette 1868. Multi-part lens for use in lighthouses developed by Augustin-Jean Fresnel, French physicist.
Fluids thermal expansion: the volume of a fluid increases when temperature rises
By heating a flask full of water it may be observed that as the temperature raises the water expands and its density decreases.