Question

justify the meaning of spherometer

Answer 1

A spherometer is an instrument for the precise measurement of the radius of a sphere. Originally, these instruments were primarily used by opticians to measure the curvature of the surface of a lens.

Answer 2

thanx

Answer 3

u r welcome :)

Answer 4

what is the principle of spherometer?

Answer 5

The spherometer directly measures a sagittal, h. Using the mean length between two outer legs, a, the spherical radius R is given by the formula:
R = (h/2) + (a^2/6h)
A spherometer basically is a precision instrument to measure very small lengths. Its name reflects the way it is used to measure the radii of curvature of spherical surfaces. It is based on the principle of screw. In general the spherometer consists of:
A base circle of three outer legs, a ring, or the equivalent.
A central leg, which can be raised or lowered.
A reading device for measuring the distance the central leg is moved.

Answer 6

WHAT is the principle of screw gauge?

Answer 7

david1990 retrieved his information, mostly verbatim, from Wikipedia.
http://en.wikipedia.org/wiki/Spherometer