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23
Relativity: The Special and General Theory
value ct in the first and fourth equations of the Lorentz transformation, we obtain:
from which, by division, the expression
x¹ = ct¹
immediately follows. If referred to the system K¹, the propagation of light takes place according to
this equation. We thus see that the velocity of transmission relative to the reference?body K¹ is also
equal to c. The same result is obtained for rays of light advancing in any other direction
whatsoever. Of cause this is not surprising, since the equations of the Lorentz transformation were
derived conformably to this point of view.
Next: The Behaviour of Measuring?Rods and Clocks in Motion
Footnotes
1
)
A simple derivation of the Lorentz transformation is given in Appendix I.
Relativity: The Special and General Theory