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
HPE Discover HPE Discover HPE Discover is the Hewlett Packard Enterprise showcase technology event for business and government customers. In 2011, HP Enterprise Business, along with participating independent user groups, combined its annual HP Software Universe, HP Technology Forum and HP Technology@Work into a single event, HP Discover. There are now two HPE Discover events annually, one for the Americas and one for Europe, Middle East and Africa (EMEA). Since the split of Hewlett-Packard into HP Inc and Hewlett Packard Enterprise, HP Discover was replaced with HPE Discover focusing on the enterprise company's products and services. HP Discover 2011 Americas took place