Online Encyclopedia

FOCUS (Latin for " hearth " or " fire...

Online Encyclopedia
Originally appearing in Volume V10, Page 587 of the 1911 Encyclopedia Britannica.
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FOCUS (Latin for " hearth " or " fireplace "), a point at which converging rays meet, toward which they are directed, or from which diverging rays are directed; in the latter case called the virtual focus (see MICROSCOPE; TELESCOPE; LENS). In geometry the word is used to denote certain points (see GEOMETRY; CONIC SECTION; and PERSPECTIVE).
End of Article: FOCUS (Latin for " hearth " or " fireplace ")
FOCSHANI (Rumanian Focrani, sometimes incorrectly w...

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