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:::::::: You said velocities less than the speed of light not exist in electromagnetism. This was clearly false.
 
:::::::: You said velocities less than the speed of light not exist in electromagnetism. This was clearly false.
 
:::::::: I already mentioned that Maxwell's equations were not invariant under Galilean transformation, yet are under Lorentz transformations. This is very well known. If you want the exact details see [http://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.165.5841&rep=rep1&type=pdf On the Galilean non-invariance of classical electromagnetism] and [http://books.google.com/books?id=19TCz0cxAFMC&pg=PA484&lpg=PA484&dq=%22maxwell's+equations%22+invariant+under+%22lorentz+transformation%22&source=bl&ots=gudaGknbwi&sig=9idd1t_o89t5RUSLcemoMq7hNjc&hl=en&ei=eq9SToXdHuTH0QHig62-Cg&sa=X&oi=book_result&ct=result&resnum=11&ved=0CHQQ6AEwCg#v=onepage&q=%22maxwell's%20equations%22%20invariant%20under%20%22lorentz%20transformation%22&f=false Understanding Physics, Invariance of electromagnetism under Lorentz transformation]. --[[User:MatthewQ|MatthewQ]] 15:47, 22 August 2011 (EDT)
 
:::::::: I already mentioned that Maxwell's equations were not invariant under Galilean transformation, yet are under Lorentz transformations. This is very well known. If you want the exact details see [http://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.165.5841&rep=rep1&type=pdf On the Galilean non-invariance of classical electromagnetism] and [http://books.google.com/books?id=19TCz0cxAFMC&pg=PA484&lpg=PA484&dq=%22maxwell's+equations%22+invariant+under+%22lorentz+transformation%22&source=bl&ots=gudaGknbwi&sig=9idd1t_o89t5RUSLcemoMq7hNjc&hl=en&ei=eq9SToXdHuTH0QHig62-Cg&sa=X&oi=book_result&ct=result&resnum=11&ved=0CHQQ6AEwCg#v=onepage&q=%22maxwell's%20equations%22%20invariant%20under%20%22lorentz%20transformation%22&f=false Understanding Physics, Invariance of electromagnetism under Lorentz transformation]. --[[User:MatthewQ|MatthewQ]] 15:47, 22 August 2011 (EDT)
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:::::::: Special relativity says that the speed of light is constant. Maxwell's theory says that same thing, as does the Michelson-Morley experiment. It can be said to be an assumption or a prediction, depending on what textbook you are reading. At any rate, it is testable, and has been confirmed in many ways (for light in a vacuum). It was tested in outer space before testing on Earth. Relativity certainly also makes predictions about charged particles traveling less then the speed of light. The biggest prediction is the formula known as the Lorentz force law. This was an important part of relativity as decribed by Lorentz, Poincare, and Einstein. The Lorentz force law used to be considered part of Maxwell's equations. [[User:RSchlafly|RSchlafly]] 15:49, 22 August 2011 (EDT)
    
== Standard kilogrammes? ==
 
== Standard kilogrammes? ==