FOC has various meanings in the Governmental & Military category. Discover the full forms, definitions, and usage contexts of FOC in Governmental & Military.
In geometrical optics, a focus, also called an image point, is the point where light rays originating from a point on the object converge. Although the focus is conceptually a point, physically the focus has a spatial extent, called the blur circle.
Governmental & MilitaryThe business practice of registering a merchant ship in a sovereign state different from that of the ship's owners, and flying that state's civil ensign on the ship. Ships are registered under flags of convenience to reduce operating costs or avoid the regulations of the owner's country.
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