plural of focalization

The quality of being focal.

A focal entity, implying something that is different from its surroundings.

(psychology) Synonym of anchoring / A revolutionary strategy which posited that military vanguardism could lead to general rebellion.

plural of focal

(optics) A focus; a point at which rays of light or other radiation converge. / The centre of any activity. / (art, aesthetics) A feature that attracts particular attention.

(optics) A measure of how strongly an optical system converges or diverges light, the inverse of optical power. In the simple case of a single convex lens, it is the distance along the optical axis from the principal plane of the lens to the lens's focal point (where, for instance, the film would be placed in a camera). For more complex or multi-element optical systems, focal length need not correspond to any obvious measurable physical distance.

(geology) The depth below the Earth's surface of the hypocentre of an earthquake. / (optics) The field of view of a camera that is in sharp focus.

plural of focal length

plural of focal depth