I Inverse results in special relativity

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The discussion centers on the relationship between mass, energy, and frequency in the context of special relativity. It highlights that the mass of an object increases with speed, leading to a corresponding decrease in apparent frequency, as described by the equations presented. Participants clarify that the energy of a massive object cannot be equated to the energy of a photon, which has zero mass, and emphasize the importance of using relativistic formulations for accurate descriptions. Misunderstandings about applying length contraction to wavelengths and the nature of matter waves are also addressed. Ultimately, the conversation reveals complexities in relating mass, energy, and frequency, particularly in relativistic contexts.
  • #31
But my point is that there is a relativistic analogue of the de Broglie relation. It just relates 4-frequency to 4-momentum.
 

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