Image: Halliburton. Downhole camera technology puts eyes underground, enhancing a company's understanding of what is going on within the furthest depths of production and helping operators make important decisions that benefit from the all too valuable sense of sight.
Barium was discovered by Sir Humphrey Davy at 1808 in England. Origin of name: from the Greek word barys meaning heavy Baryta (barium oxide, BaO) was distinguished from lime (calcium oxide, CaO) by Scheele in 1774.
Gallium was founded by Francios Lecoq de Boisbaudran. He found this element while experimenting with a zinc pyrene blende(a blend of rocks). While expirementing with this blend, he noticed two visible violet rays which came to be named Gallium. He named this element after himself.