Jacques-Louis Soret

Jacques-Louis Soret (; 30 June 1827 – 13 May 1890) was a Swiss chemist and spectroscopist. He studied both spectroscopy and electrolysis. Career Soret held the chairs of chemistry (1873-1887) and medical physics (1887-1890) at the University of Geneva.

Soret also developed optical instruments. He climbed Mont Blanc, where he was the first scientist to make actinometric measurements of solar radiation. These observations were published in the Philosophical Magazine in 1867. Independently, Per Teodor Cleve separated it chemically from thulium and erbium in 1879. All three researchers are given credit for the element's discovery. Death Jacques-Louis Soret died in Geneva on 13 May 1890. His son was Charles Soret, a recognized physicist and chemist in his own right.