Question

what is meant by air wedge​

Answer 1

Answer:

An air wedge is one of the simplest designs of shearing interferometers used to visualize the disturbance of the wave front after propagation through a test object. An air wedge can be used with nearly any light source, including non-coherent white light.

Answer 2

Answer:

An air wedge is a simple interferometer used to visualize the disturbance of wave front after propagation through a test object .