What is Flatness Test of Mirror? Purpose of Flatness test? Explain in details step by step procedure to perform Flatness test.

The flatness test of a mirror is conducted to determine the degree of flatness or curvature of its surface. It assesses how closely the mirror conforms to a perfectly flat plane. This test is particularly important for mirrors used in precision optical applications where a high degree of flatness is required. The purpose of the flatness test is to ensure […]