centre of curvature

British  

noun

1. the point on the normal at a given point on a curve on the concave side of the curve whose distance from the point on the curve is equal to the radius of curvature

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Example Sentences

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centre of curvature

For instance, if the radius of curvature of the cathode be 1.5 inches, the centre of curvature may lie something like an eighth of an inch or less in front of the anode.

From On Laboratory Arts by Richard Threlfall

These reflectors should be spherical and so adjusted that the radiant is in the centre of curvature, thus ensuring that the light from the reflector passes again through the original source.

From Optical Projection Part 1: Projection of Lantern Slides by Lewis Wright

Both arms of the beam carry circular-arched heads, which are similar portions of the complete circles, the centre of curvature being the fulcrum, or axis.

From A Treatise on Meteorological Instruments Explanatory of Their Scientific Principles, Method of Construction, and Practical Utility by Henry Negretti

On the side of the beam towards the centre of curvature the longitudinal filaments must be contracted, and on the other side they must be extended.

From Encyclopaedia Britannica, 11th Edition, Volume 9, Slice 2 "Ehud" to "Electroscope" by Various

The distance from P to the centre of curvature is the radius of curvature.

From Encyclopaedia Britannica, 11th Edition, Volume 11, Slice 6 "Geodesy" to "Geometry" by Various