Focus may refer to: In science, mathematics or computing: Focus (optics), a point toward which light rays are made to converge Autofocus, a feature of some optical systems that ...

Focus is a Dutch progressive rock band. It was founded by classically trained organist / flautist Thijs van Leer in 1969. It is most famous for the songs "Hocus Pocus" and Sylvia.

Cette page d? homonymie répertorie les différents sujets et articles partageant un même nom. 

focus ????????? 1981? 10?23? ? ??? ??????? ????? ????? 2001? ??????????

In geometrical optics, a focus (also called an image point) is the point where light rays that come from a point on the object converge (come together). In reality the focus is ...