28350
6th September 2010, 15:44
So apparently a team of relatively reliable scientists has recorded data that indicates a change in the fine-structure constant, α (http://en.wikipedia.org/wiki/Fine-structure_constant). Whether the discrepancy is due to error or something more significant is still unclear. This could mean serious changes in cosmology.
The fine-structure constant (http://en.wikipedia.org/wiki/Fine-structure_constant), a coupling constant characterizing the strength of the electromagnetic interaction, has been measured lately by scientists from the University of New South Wales in Sydney, Australia and has been found to change slightly (http://www.sciencenews.org/view/generic/id/62985/title/Changing_one_of_natures_constants) in light sent from quasars in galaxies as far back as 12 billion years ago. Although the results look promising, caution is advised: 'This would be sensational if it were real, but I'm still not completely convinced that it's not simply systematic errors' in the data, comments cosmologist Max Tegmark of MIT. Craig Hogan of the University of Chicago and the Fermi National Accelerator Laboratory in Batavia, Ill., acknowledges that 'it's a competent team and a thorough analysis.' But because the work has such profound implications for physics and requires such a high level of precision measurements, 'it needs more proof before we'll believe it.'
Source: Slashdot.org (http://science.slashdot.org/story/10/09/05/212252/Fine-Structure-Constant-Maybe-Not-So-Constant)
The fine-structure constant (http://en.wikipedia.org/wiki/Fine-structure_constant), a coupling constant characterizing the strength of the electromagnetic interaction, has been measured lately by scientists from the University of New South Wales in Sydney, Australia and has been found to change slightly (http://www.sciencenews.org/view/generic/id/62985/title/Changing_one_of_natures_constants) in light sent from quasars in galaxies as far back as 12 billion years ago. Although the results look promising, caution is advised: 'This would be sensational if it were real, but I'm still not completely convinced that it's not simply systematic errors' in the data, comments cosmologist Max Tegmark of MIT. Craig Hogan of the University of Chicago and the Fermi National Accelerator Laboratory in Batavia, Ill., acknowledges that 'it's a competent team and a thorough analysis.' But because the work has such profound implications for physics and requires such a high level of precision measurements, 'it needs more proof before we'll believe it.'
Source: Slashdot.org (http://science.slashdot.org/story/10/09/05/212252/Fine-Structure-Constant-Maybe-Not-So-Constant)