1874 in science

Summary

The year 1874 in science and technology involved some significant events, listed below. Astronomy

December 9 – a transit of Venus across the Sun is observed in Muddapur, India, by an astronomical expedition led by Pietro Tacchini

Chemistry

Per Teodor Cleve discovers that didymium is in fact two elements, now known as neodymium and praseodymium
C. R. Alder Wright synthesizes heroin
Othmar Zeidler synthesises DDT
Carl Schorlemmer publishes A Manual of Chemistry of the Carbon Compounds; or, Organic Chemistry.
Jacobus van 't Hoff and Achille Le Bel independently propose that organic molecular models can be three-dimensional

Exploration

February – the Challenger expedition provides geological evidence for the existence of the continent of Antarctica

History of science

John William Draper publishes History of the Conflict between Religion and Science

Mathematics

Official source

https://en.wikipedia.org/wiki/1874_in_science

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