Literary notes about Focus (AI summary)
Throughout literature, "focus" is utilized in both literal and metaphorical senses. In scientific or technical contexts, authors detail how light or rays converge at a specific point—illustrated by precise discussions of lenses and optical properties ([1], [2], [3], [4]). Simultaneously, the word often signifies mental concentration or the central point around which events or thoughts organize, as seen when attention converges on a person or idea ([5], [6], [7]). This dual usage enriches the term, allowing writers to evoke vivid imagery in both the physical realm and the landscape of human consciousness ([8], [9]).
- 4.] be a reflecting or refracting Plane, and Q the Focus of the incident Rays, and Q q C a Perpendicular to that Plane.
— from Opticks : by Isaac Newton - The rays now come to a focus no longer, and there can be no image.
— from How it Works by Archibald Williams - So we place in front of our lens a second convex lens which shortens its principal focus; so that in effect the box has been racked out sufficiently.
— from How it Works by Archibald Williams - Now, a compound microscope is practically a telescope with the object at the long focus, very close to a short-focus lens.
— from How it Works by Archibald Williams - To repeat this word to himself thus was the only way in which he could focus or make it thinkable.
— from The Forsyte Saga, Volume I. by John Galsworthy - Then, suddenly, everything seemed to fall into focus—Redmond, professors, classes, students, studies, social doings.
— from Anne of the Island by L. M. Montgomery - When the focus of public attention ceases to move and shift, when it is fixed, the circle which defines the limits of the public is narrowed.
— from Introduction to the Science of Sociology by E. W. Burgess and Robert Ezra Park - When [Pg 251] looking at a distant object the eye thickens slightly and brings the focus forward into the retina.
— from How it Works by Archibald Williams - Anne could not quickly adjust her mental focus to this astonishing change.
— from Anne's House of Dreams by L. M. Montgomery
