The center of a circle that passes through a curve at a given point and has the same tangent and curvature at that point.
- The Shack cube interferometer is used to test converging wavefronts at the center of curvature of a reflective surface.
- The fabrication team measured the optical surface using phase-shifting interferometry and a refractive null corrector near the center of curvature.
- Since a real antenna is not an ideal point source, its equiphase contours will not be perfectly spherical, and hence the center of curvature may vary with the azimuth and elevation angle of an arriving signal.
Definition of center of curvature in:
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