Portrait of Hieronymous Theodor Richter

Adapted from ⁠an image by Ernst Friedrich Wilhelm Hugo Höffert (1832–1903) (public domain), via Wikimedia Commons.

1824–1898

Hieronymous Theodor Richter

Discovered indium in 1863.

Element

49InIndium
1863

In 1863 Ferdinand Reich, in Freiberg, was looking for thallium in a zinc ore. Being colour-blind, he asked his assistant Hieronymus Theodor Richter to read the spectrum, and Richter saw a brilliant indigo line. They named the new element indium.

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