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Bible Dictionaries
Collimator

Webster's Dictionary

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(1):

(n.) A tube having a convex lens at one end and at the other a small opening or slit which is at the principal focus of the lens, used for producing a beam of parallel rays; also, a lens so used.

(2):

(n.) A telescope arranged and used to determine errors of collimation, both vertical and horizontal.

Bibliography Information
Webster, Noah. Entry for 'Collimator'. Noah Webster's American Dictionary. https://www.studylight.org/​dictionaries/​eng/​web/​c/collimator.html. 1828.
 
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