An Etymological Dictionary of Astronomy and Astrophysics

English-French-Persian

فرهنگ ریشه‌شناختی اخترشناسی-اخترفیزیک

Homepage  Preliminaries  Abbreviations  Acknowledgments  References 
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
Babinet compensator
  پاهنگنده‌ی ِ ببینه  
pâhangandeh-ye Babinet
Fr.: compensateur de Babinet  

A crystal device made of two → quartz  → prisms
with equal acute angles assembled in a rhombus that is used in analyzing → polarized light. The wedge-shaped prisms are placed against each other and can be displaced along their plane of contact by a → micrometer. Thus they form a parallel plate of variable thickness allowing the optical retardation to be adjusted.

See also: Jacques Babinet (1794-1872), French physicist; → compensator.