We present the development of an interferometer capable of making contactless measurements of vibrations. The results show the we achieve micro- and/or nano-metric measurements without the stabilization of the laser. While there are multiple techniques to achieve this objective. in this case. https://cwpmitr956b7b.bloginwi.com/68593952/alkaline-activation-of-brick-waste-with-partial-addition-of-ordinary-portland-cement-opc-for-reducing-brick-industry-pollution-and-developing-a-feasible-and-competitive-construction-material