Home > Industry/Domain > Religion

Religion

Refers to any set of beliefs of any community or nation, concerning the cause, nature, and purpose of life and the universe, especially when considered as the creation of a supernatural or divine agency.

0Categories 70899Terms

Add a new term

Contributors in Religion

Religion >

Astigmatic power lens

Eyewear; Optometry

Lens bringing a paraxial pencil of parallel light to two separate line foci mutually at right angles and hence having vertex power in only the two principal meridians.

Astronomical telescope

Eyewear; Optometry

Compound optical system, afocal in normal adjustment, consisting of a positive objective element or group and a positive ocular element or group forming a magnified, inverted ...

Condensing lens

Eyewear; Optometry

A convex lens used to condense the illuminating beam into the patient's eye and to form a real inverted image of the retina thus illuminated.

Concave lens

Eyewear; Optometry

Lens which causes parallel incident light to diverge from a virtual focus. Also known as minus-power lens.

Abbe number

Eyewear; Optometry

Mathematical expression for determining the correction for chromatic aberration of an optical material of component.

Astigmatic difference

Eyewear; Optometry

Vertex power in the second principal meridian minus that in the first principal meridian.

Optical drive

Multimedia;

An optical drive is an electronic device used to seek, read, and write data on an optical disc. An optical drive may reside in an optical library or as a stand-alone unit.

Sub-categories