Word: electrons
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Dates: during 2000-2009
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...three basic particles of antimatter—positron, antiproton and antineutron—share the same masses and magnitudes of charge as those of their counterparts in matter—electron, proton and neutron, but with opposite charges. Just as a proton and electron compose a hydrogen atom, an antiproton and positron make an antihydrogen atom. When matter and antimatter particles collide, they destroy each other in a burst of energy...
First, Gabrielse used lasers to excite the electron in a cesium atom into a higher orbit. When the cesium atom collides with a positron, the electron binds with the positron, to create an atom that is half matter and half antimatter. When that atom collides with an antiproton, the positron binds to the antiproton, forming an antihydrogen atom...
...ELECTRON-BEAM COMPUTED TOMOGRAPHY...
Until now. It turns out that excess deposits of calcium in the lining of the arteries, which can be measured using electron-beam computed tomography (EBCT), are a good indication that potentially dangerous fatty plaques exist. The correlation is strong enough that the American Heart Association is weighing a recommendation of EBCT screening for healthy adults who have a greater than average risk of heart disease, including smokers and those with a strong family history. As an added benefit, patients can take home their EBCT image, complete with gummed-up arteries, and use it as a reminder to stick with...
Born in Albany, Rosenbluth received his bachelor’s degree from Harvard as a teenager, graduating Phi Beta Kappa. He went on to receive his doctorate from the University of Chicago in 1949. Soon after, he discovered the Rosenbluth formula for proton electron scattering, which is today a central theory of college-level physics. For this development, he later won the Ernest Orlando Lawrence Award...