• Corpus ID: 119255331

Non-invariance of the speed of light in free-space

@article{Petrov2019NoninvarianceOT,
  title={Non-invariance of the speed of light in free-space},
  author={Nikolai I. Petrov},
  journal={arXiv: Optics},
  year={2019}
}
  • N. Petrov
  • Published 22 February 2019
  • Physics
  • arXiv: Optics
A plane monochromatic wave propagates in vacuum at the velocity of c. However, wave packets limited in space and time are used to transmit energy and information. Here it has been shown based on the wave approach that the on-axis part of the pulsed beams propagates in free space at a variable speed, exhibiting both subluminal and superluminal behaviours in the region close to the source, and their velocity approaches the value of c with distance. Although the pulse can travel over small… 

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