## Determine the radius of curvature of a convex or concave spherical surface by a spherometer

The radius of curvature:

The distance from the center of a circle or sphere to its surface is its radius. For other curved lines or surfaces, the radius of curvature at a given point is the radius of a circle that mathematically best fits the curve at that point.

The equivalent “surface radius” that is described by radial distances at points along a body’s surface is its radius of curvature (more formally, the radius of curvature of a curve at a point is the radius of the osculating circle at that point). With a sphere, the radius of curvature equals the radius (thus, the radius of curvature is sometimes used as a synonym for radius). With an oblate ellipsoid (or, more properly, an oblate spheroid), however, not only does it differ from the radius, but it varies, depending on the direction being faced. The extremes are known as the principal radii of curvature.

### Determine the radius of curvature of a convex or concave spherical surface by a spherometer

**Determine the radius of curvature of a convex or concave spherical surface by a spherometer**

*Determine the radius of curvature of a convex or concave spherical surface by a spherometer*

Determine the radius of curvature of a convex or concave spherical surface by a spherometer

**teachingbd24.com** is such a website where you would get all kinds of necessary information regarding educational notes, suggestions and questionsâ€™ patterns of school, college, and madrasahs. Particularly you will get here special notes of physics that will be immensely useful to both students and teachers. The builder of the website is Mr. Md. Shah Jamal Who has been serving for 30 years as an Asst. Professor of BAF Shaheen College. He expects that this website will meet up all the needs of Bengali version learners /students. He has requested both concerned students and teachers to spread this website home and abroad.