Low cost DIY Michelson Interferometer

This is my Michelson interferometer project, it is very low cost: -1 Red laser pointer (like rifle pointer) -2 old hard disks (2.5'') as mirrors -1 microscope specimen mirror as beamsplitter -1 lens from old camera objective (to project the image on the wall) -6 springs for mirror holders -6 nuts (M4) for mirror holders -6 bolts (M4) for mirror holders -hot glue -wooden board -6 wood screw (to fix the elements on the wooden board

it costed me less than 30€ and some patience

Watch video on Youtube