Telstra has revealed the addition of almost one million new mobile services in the six months to December 2011, but Sensis revenues plummeted 24 percent in 12 months.
read more
William Atkins
Friday, 21 September 2007 21:53
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.
Loading comments ...

|
Microsoft Office 365Try an easy-to-use set of web-enabled tools for business-class productivity services. Office 365 provides anywhere-access to email, important documents, contacts, and calendars on almost any device. |