Polonium were marketed by Firestone from 1940 to 1953. While the amount of radiation from the plugs was minuscule and not a threat to the consumer, the benefits of such plugs quickly diminished after approximately a month because of polonium's short half-life and because buildup on the conductors would block the radiation that improved engine performance. (The premise behind the polonium spark plug, as well as Alfred Matthew Hubbard's prototype radium plug that preceded it, was that the radiation would improve ionization of the fuel in the cylinder and thus allow the motor to fire more quickly and efficiently.) Polonium is
HPE Discover Messe Wien Congress Center, on November 29 through December 1, 2011. 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