Word: proton
(lookup in dictionary)
(lookup stats)
Dates: all
Sort By: most recent first
(reverse)
FOOTNOTE: *Antiprotons and positrons are examples of antimatter, a rare set of particles that mirror normal matter. A proton is positively charged, but an antiproton is negative. The counterpart of the negative electron is the positive positron...
...only accelerators can re-create them. In fact, all of the quarks in all of the families have been found or re-created -- except for the one called the top, which is believed to be the heaviest of all (its mass is at least 90 times that of a proton). Because it would complete the set and thus vindicate decades of theory building, the top quark has become the object of an intensive international search. And because the top is so massive, it will take the energy of the most powerful accelerators to produce...
...keep finding new answers, Rubbia is determined to improve CERN's technology. He plans to boost LEP's power 50% in the next year or two. CERN is also trying to persuade its member nations to put up the money to build a proton-proton collider in the same tunnel with LEP. Called the large had ron collider, it would be four times as powerful as the Tevatron and almost half as forceful as the proposed superconducting supercollider in Texas. Rubbia thinks he can finish the LHC several years ahead of the SSC and thus beat the Americans to many...
...Western failures have boosted the competitive position of China and the Soviet Union, which have state-supported space programs. Moscow has sought for years to launch a U.S. satellite aboard a giant Proton rocket. China plans to use one of its Long March missiles next month to lift an AsiaSat communications satellite in a joint venture with Hong Kong. China charges only about half the $100 million that Western firms get for a launch...
...from dependence on foreign know-how by developing its own booster. The H-2, scheduled for its first test launch in 1993, will be able to put a two-ton spacecraft into high earth orbit. That is competitive with Europe's Ariane 4, the U.S. Titan and the Soviets' Proton booster, all of which are being marketed as commercial launchers...