Radium seventh of a gram of radium. One kilogram of the Earth's crust contains about 900 picograms of radium, and one liter of sea water contains about 89 femtograms of radium. Radium was discovered by Marie Sklodowska-Curie and her husband Pierre Curie on 21 December 1898, in a uraninite (pitchblende) sample. While studying the mineral earlier, the Curies removed uranium from it and found that the remaining material was still radioactive. They separated out an element similar to bismuth from pitchblende in July 1898, that turned out to be polonium. They then separated out a radioactive mixture consisting mostly of two
DISCover Gaming System, or HAWGS, technology would be used for FiringSquad's Ammo digital distribution service. The following month, on September 2007, the company disclosed the InstaPlay desktop client, which improves the ease of use for accessing games. DISCover chief executive officer David Ferrigno addressed Instaplay concerns and comparisons with other digital distribution services such as Direct2Drive and Steam. DISCover Digital Interactive Systems Corporation (or DISCover) is a company specializing in gaming technology for PCs. They are the creators of the DISCover technology which allow PC games to be played like a video game console. The technology, which features the "Drop and