the path of light through a medium, having a magnitude equal to the geometric distance through the system times the index of refraction of the medium.
[ 1890-95 ]
the path of light through a medium, having a magnitude equal to the geometric distance through the system times the index of refraction of the medium.
[ 1890-95 ]
Random House Webster's Unabridged English dictionary. Полный английский словарь Вебстер - Random House . 2012