Physical Chem.
a method for detecting regions of differing densities in a clear fluid by photographing a beam of light passed obliquely through it.
[ 1930-35 ]
Physical Chem.
a method for detecting regions of differing densities in a clear fluid by photographing a beam of light passed obliquely through it.
[ 1930-35 ]
Random House Webster's Unabridged English dictionary. Полный английский словарь Вебстер - Random House . 2012