• The angular dispersion of a prism in the ratio of the difference in angular deviation of two rays ...
• The difference of two terms ...
• The angular dispersion of a prism in the ratio of the difference in angular deviation of two rays ...
• The difference of two terms ...
Циммерман М., Веденеева К.. Русско-Английский научно-технический словарь переводчика. Russian-English scientific dictionary for translators. 2012