When+and+how+helium+was+found

Helium was first found on the sun in 1868 by a French astronomer named, Peirre-Jules-Cesar Janssen. He was studying the sun and noticed a yellow line in the sun spectrum. Sir Norman Lockyer, an English astronomer, realized that this line, was a wave link of 687.49 nanometers, it could not be produced by any element known at the time. It was later named helium by Lockyer. Helium came from the Greek word helios, which is Greek for sun. In 1895 a Scottish chemist named, Sir Williams Ramsay conducted an experiment with a mineral containing uranium called clevite. He exposed to mineral acids and collected the gases it produced. He sent samples to Lockyer and Sir Williams Crockes, who were able to identify the helium within it. Two Swedish chemist, Nils Langlet and Per Theador Cleve, independently found helium in clevite around the same time Ramsay did.