[ freɪ'nɛl ]
■ noun Photography a flat lens made of a number of concentric rings, to reduce spherical aberration.
Origin
C19: named after the French physicist and civil engineer Augustin J. Fresnel .
[ freɪ'nɛl ]
■ noun Photography a flat lens made of a number of concentric rings, to reduce spherical aberration.
Origin
C19: named after the French physicist and civil engineer Augustin J. Fresnel .
Concise Oxford English vocab. Сжатый оксфордский словарь английского языка. 2004