FOCAL POINT Definition & Meaning

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focal point

noun

Also called principal focus. Optics. either of two points on the axis of a mirror, lens, or other optical system, one point being such that rays diverging from it are deviated parallel to the axis upon refraction or reflection by the system and the other point being such that rays parallel to the axis of the system converge to the point upon refraction or reflection by the system.
the point at which all elements or aspects converge; center of activity or attention:
The focal point of our discussion was the need for action.
the central or principal point of focus.

focal point

noun

Also calledprincipal focusfocus the point on the axis of a lens or mirror to which parallel rays of light converge or from which they appear to diverge after refraction or reflection
a central point of attention or interest

focal point

The point at which all radiation coming from a single direction and passing through a lens or striking a mirror converges.
Also called focus

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�y��vlog History and Origins

Origin of focal point¹

First recorded in 1705–15

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Example Sentences

Examples have not been reviewed.

A wooden platform and benches in the center of the garden serve as a focal point for performances and events.

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Thousands more sites are thought to be contaminated across Europe, and the Crown Dependency of Jersey has become a focal point for efforts to tackle the impacts.

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But the capital has emerged largely unscathed – except for the unfinished headquarters for the auditor-general's office, which remains the focal point of the damage in Thailand.

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They have expanded over the past 55 years, becoming a focal point for violence and conflicting claims over land.

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According to those who depend on them, local libraries are far more than a repository of books - they are community focal points and, for some, a vital lifeline to the outside world.

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