Ole Ro/mer, the speed of light, the apparent period of Io, the Doppler effect, and the dynamics of Earth and Jupiter

@article{Shea1998OleRT,
  title={Ole Ro/mer, the speed of light, the apparent period of Io, the Doppler effect, and the dynamics of Earth and Jupiter},
  author={James Herbert Shea},
  journal={American Journal of Physics},
  year={1998},
  volume={66},
  pages={561-569}
}
  • J. Shea
  • Published 9 June 1998
  • Physics
  • American Journal of Physics
Ole Romer’s (1676) method of using variations in the apparent period of Jupiter’s moon, Io, to demonstrate that the speed of light is finite made use of what we would today call a “Doppler” method. He did this 166 years before Christian Doppler described what we now call the Doppler effect and the mechanism in 1842. Although the method Romer conceived is unquestionably valid, his original and only paper on the subject left out much of the detail necessary to determine whether his measurements… 
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References

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Early Estimates of the Velocity of Light
HE astronomical methods by which OLE ROEMER and JAMES BRADLEY demonstrated the finite velocity of light are familiar portions of the scientific tradition. With respect to the early estimates of the
de Mora Luminis: A spectacle in two acts with a prologue and an epilogue
Roemer’s work on the velocity of light has been incorrectly described in many physics texts and books dealing with the history of science. The evolution of the misinformation is discussed and