Sl. No.

Required item

Utility

1

Optical rail

To hold the entire system

2

Laser light source

Source to produce the interference pattern

3

Microscope objective lens

To collimate the beams

To better visualize the fringes

4

Meter scale

To measure distance between etalon and screen

5

Two semi reflecting surfaces

To form the etalon

6

Micrometer

To adjust the spacing between the two mirrors

7

Screen

To obtain the fringe pattern