Exact Result for the Grazing Angle of Specular Reflection from a Sphere

@article{Miller1993ExactRF,
  title={Exact Result for the Grazing Angle of Specular Reflection from a Sphere},
  author={Allen R. Miller and Emanuel Vegh},
  journal={SIAM Rev.},
  year={1993},
  volume={35},
  pages={472-480}
}
An exact formula is given for the grazing angle of specular reflection from a sphere by displaying the zeros of a certain self-inversive quartic polynomial. 

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