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.
Discovery: Neptunium was discovered in 1940 at the University of California, Berkeley, by professor Edwin McMillan and graduate student Philip Abelson. They bombarded uranium with cyclotron-produced slow neutrons, which resulted in the reactacts fusing to form the new element neptunium.