Lights Illuminate Surfaces Superluminally
Popular Physics
2016-06-22 v1
Abstract
When a light bulb is turned on, light moves away from it at speed , by definition. When light from this bulb illuminates a surface, however, this illumination front is not constrained to move at speed . A simple proof is given that this illumination front always moves {\it faster} than . Generalized, when any compact light source itself varies, this information spreads across all of the surfaces it illuminates at speeds faster than light.
Keywords
Cite
@article{arxiv.1506.02643,
title = {Lights Illuminate Surfaces Superluminally},
author = {Robert J. Nemiroff and Qi Zhong and Elias Lilleskov},
journal= {arXiv preprint arXiv:1506.02643},
year = {2016}
}
Comments
5 pages, 1 figure, comments welcome