A number of Australian employees of Hewlett-Packard are facing the loss of their jobs as the global computer giant looks to slash its worldwide workforce by up to 30,000.
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William Atkins
Friday, 21 September 2007 20:53
U.S. physicist Steven Weinberg (1933--) won the Nobel Prize in Physics in 1979, along with Abdus Salam and Sheldon Glashow, for their formulating work on the theory electroweak unification; that is, bringing together the electromagnetic force and the weak nuclear force into the electroweak force. Both forces use subatomic particles—electromagnetism at large distance swith the use of massless photons and the weak nuclear force at tiny distances with the use of large particles called bosons. The unification of both forces showed that photons and bosons are actually similar, related in structure, and, thus, in the same family of particles, even though they have distinct physical differences.
Photons are grouped within gauge bosons, within the major division called bosons (which also includes gluons, W and Z bosons, graviton, and Higgs boson).
The other major division is called fermions, with subheadings of quarks (with six “flavors”: up, down, strange, charm, bottom and top quarks) and leptons (with six “flavors”: electron, muon, tau, electron neutrino, muon neutrino, and tau neutrinos).
Thus, all elementary particles are classified by scientists as either bosons or fermions.
Weinberg is a theoretical physicist, primarily in particle physics, at the University of Texas at Austin. It is a member of the Physics and Astronomy Departments at UT, performing studies in elementary particles and cosmology. Some of his published books include: Gravitation and Cosmology--Principles and Applications of the General Theory of Relativity (1972); The Discovery of Subatomic Particles (1983, 2003); and Dreams of a Final Theory--The Search for the Fundamental Laws of Nature (1993).
His Nobel Prize autobiography appears at Nobelprize.org.
The transcripts of a PBS interview given by Weinberg appear at: http://www.counterbalance.net/transcript/wein-body.html.
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