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Talk:Counterexamples to Relativity (view source)
Revision as of 04:51, August 26, 2011
, 04:51, August 26, 2011→Relativity and Electromagnetism: superseded with a more accurate study in 2007, with no variation
:::: The linked article says there may have been a change in the fine structure constant, α, not necessarily the speed of light, c. Also, it hardly seems like a variable α is currently well-established. It's just the result from one set of data. But even accepting that there has been a change in α and that this means a change in c, the amount seems minuscule. The article says that α "had increased by a few parts in 10<sup>5</sup> in the past 12 billion years", which would correspond to a similar change in c. Therefore, even if c is not exactly constant it would be very nearly constant and relativity would still be a great approximation. That's ignoring that there may be a mundane explanation for this apparent change.
:::: The linked article says there may have been a change in the fine structure constant, α, not necessarily the speed of light, c. Also, it hardly seems like a variable α is currently well-established. It's just the result from one set of data. But even accepting that there has been a change in α and that this means a change in c, the amount seems minuscule. The article says that α "had increased by a few parts in 10<sup>5</sup> in the past 12 billion years", which would correspond to a similar change in c. Therefore, even if c is not exactly constant it would be very nearly constant and relativity would still be a great approximation. That's ignoring that there may be a mundane explanation for this apparent change.
:::: Also, as BrentH mentions above, if you accept these results you have to accept that the universe is billions of years old. --[[User:MatthewQ|MatthewQ]] 19:43, 25 August 2011 (EDT)
:::: Also, as BrentH mentions above, if you accept these results you have to accept that the universe is billions of years old. --[[User:MatthewQ|MatthewQ]] 19:43, 25 August 2011 (EDT)
:: I was explaining historically why the speed of light was thought to be constant. It was not just some unproved Einstein relativity assumption. There was solid experimental and theoretical evidence before Einstein. There is no evidence for a variable speed of light. That 2004 paper claiming alpha changed has been superseded with a more accurate study in 2007, with no variation. [http://dorigo.wordpress.com/2007/04/18/the-oklo-reactor-and-varying-physical-constants/][http://arxiv.org/abs/nucl-ex/0701019] Even if alpha changed, it would not necessarily mean that ''c'' changed. I am not sure why any of this is political. We can measure the speed of light to about 10 decimal places. If the speed were not constant, then an experiment would be likely to detect it. [[User:RSchlafly|RSchlafly]] 00:51, 26 August 2011 (EDT)
== Standard kilogrammes? ==
== Standard kilogrammes? ==