You are seeing reference results for principal foci because there's not a match on Thesaurus.com.
www.reference.com/browse/hyperbola
hyperbola, plane curve consisting of all points such that the difference between the distances from any point on the curve to two fixed points (foci) is the same for all ...
www.reference.com/browse/Focal_length
The focal length of an optical system is a measure of how strongly it converges (focuses) or diverges (diffuses) light. A system with a shorter focal length has greater ...
www.reference.com/browse/James_M._Edie
James M. Edie (November 3, 1927 – February 21, 1998) was a twentieth century American philosopher. Life and career Edie was born in Grand Forks, North Dakota. He studi ...
www.ask.co.uk/how/how_can_you_calculate_the_focal_lengt... www.ask.co.uk/how/how_can_you_calculate_the_focal_length_of_a_lens
length is the distance from the center of the lens to the focal point or the principal foci. The calculations will depend
www.teoma.com/ans/lens-formula
conjugate points from the respective principal foci of a lens or mirror... of the lens is denoted as C and the principal axis is X'X. The R
www.life123.com/question/Feline-Eosinophilic-Granuloma
Feline Eosinophilic Granuloma Answers to Common Questions What is eosinophilic granuloma? ( ¦ē·ə¦sin·ə¦fil·ik gran·yə′lō·mə ) (medicine) A disease, principally of childhood, characterized by foci of bone inflammation and granulation containing lipids
Focal length - Wikipedia, the free encyclopedia
en.wikipedia.org/wiki/Focal_length
For a thin lens in air, the focal length is the distance from the center of the lens to the principal foci (or focal points) of the lens. For a converging lens (for example ...
dictionary.reference.com/browse/principal
of, of the nature of, or constituting principal or capital: a principal investment. 3. Geometry. (of an axis of a conic) passing through the foci. noun. 4. a chief or head ...
hyperion.cc.uregina.ca/~szymanss/uglabs/p112/Experiment... hyperion.cc.uregina.ca/~szymanss/uglabs/p112/Experiments/112-04ThickLens08.pdf
as some distance from the focal points, or, more properly, the principal foci of the ... Since all distances in this experiment will be measured from the principal foci, ...
www.memidex.com/principal-foci
Feb 13, 2012 ... "principal foci" is a plural form of "principal focus": a point of convergence of light ( or other radiation) or a point from which it diverges...
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