- EN: focus - plural: focuses foci | WordReference Forums
Focus can be either a noun or a verb The plural can ONLY be foci Focuses is a conjugation of the VERB to focus So I can say: This research focuses (even in an academic setting) Or I can say, the foci of this research (assuming it has more than one focus) There are no other options and the setting (academic or not) is irrelevant
- BYJUS Online learning Programs For K3, K10, K12, NEET, JEE, UPSC . . .
Focus Incidence: When a ray passes through the focus and strikes a concave or convex mirror, the reflected ray will be parallel to the principal axis This characteristic holds for concave and convex mirrors and is crucial in determining the path of reflected rays
- What are Conic Sections - BYJUS
What is a conic section in real life? We can observe conic sections in many real-life situations For example, when we consider the Sun as one focus, then the path of planets form ellipses around it Parabolic mirrors help in gathering light beams at the focus of the parabola
- How to Find the Foci of an Ellipse? - BYJUS
The fixed point and fixed straight line are called focus and directrix respectively An ellipse has two points which are the focus of the ellipse In this article, let us discuss how to find the foci of an ellipse in detail
- BYJUS Online learning Programs For K3, K10, K12, NEET, JEE, UPSC . . .
Definition An ellipse if we speak in terms of locus, it is the set of all points on an XY-plane, whose distance from two fixed points (known as foci) adds up to a constant value The ellipse is one of the conic sections, that is produced, when a plane cuts the cone at an angle with the base If the cone is intersected by the plane, parallel to the base, then it forms a circle Ellipse Shape In
- Definition of Convex Lens - BYJUS
Definition of Convex Lens This type of lens is thicker at the centre and thinner at the edges An optical lens is generally made up of two spherical surfaces If those surfaces are bent outwards, the lens is called a biconvex lens or simply a convex lens These types of lenses can converge a beam of light coming from outside and focus it to a point on the other side This point is known as the
- Focus in on something - WordReference Forums
Hello, Mr Robert Hartwell Fiske is the author of several books about language In one of his books (Dimwit's Dictionary) he defines the use of "IN" in "to focus IN on" as "wretched redundancy" and suggests that IN ought to be avoided Since most of the English dictionaries suggest only "to
- focusing or focussing? - WordReference Forums
Noun: focus and focuses and focussing Verb: focus, focuses or focusses, focusing or focussing, focused or focussed I've used both forms, but when I'm more conscious with spelling then I use the ones with the extra s Don't exactly know why when both forms are correct
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