(n.) That which burns by refraction, as a double convex lens, or the sun's rays concentrated by such a lens, sometimes used as a cautery.
DIACAUSTIC
Meaning of DIACAUSTIC in English
Webster's English dictionary. Английский словарь Webster. 2012
(n.) That which burns by refraction, as a double convex lens, or the sun's rays concentrated by such a lens, sometimes used as a cautery.
Webster's English dictionary. Английский словарь Webster. 2012