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.
Tellurium Dioxide, has the symbol TeO2 is a solid oxide of tellurium. Tellurium metal was first discovered by Franz-Joseph Muller von Reichenstein, but it was Martin Heinrich Klaproth who named the element in 1798 after the Latin word for âearthâ, Telus.