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How to pronounce “focal length”
Hear “focal length” in real YouTube speech, then study definitions and example sentence snippets.
Pronunciation guide for focal length
- Learning goal
- Practice the English pronunciation of focal length with real speech in context.
- Available examples
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- Definition summary
- (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.
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A Deep Dive Into “focal length”
Meaning
- [Noun]
- (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.
Practice Nearby Words
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Similar Sounds
focal length, full-length, focalize, vocalic, focally, focalise, arc length, cackling, coalinga, alength