# Does a concave spherical mirror have a radius or curvature?

A concave spherical mirror has both a radius and a curvature. The radius of curvature of a concave spherical mirror is defined as a measurement of distance between the vertex and the center of curv... Read More »

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## How to Calculate the Radius of Curvature?

The radius of curvature is the radius, or half of the diameter, of a circle. The radius of curvature changes as you move along a curve but can be determined at any location along a curve. Radius of... Read More »

## If a mirror has a focal length of 15cm is it a concave mirror?

Concave mirrors curve inwards like a bowl. When rays of light parallel to the axis of a concave mirror strike its surface, they are all reflected through the focal point. The distance from the mirr... Read More »

## What kind of mirror is used in a make-up mirror: convex or concave?

Make-up mirrors are concave. Concave mirrors are curved inwards and make the person's image larger as she approaches the mirror. Concave mirrors are also used as shaving mirrors and for car headlig... Read More »

## Who invented the non-spherical mirror telescope?

John Hadley, an English mathematician, successfully created the first non-spherical mirror telescope in 1721. Through trial and error, he succeeded in grinding the mirror into the parabolic shape t... Read More »

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