Young’S Modulus

An optical lever is a device that magnifies small displacements, making it easier to measure them accurately. It typically consists of: • A heavy, round metallic base. • A frame (like one used in Young's modulus experiments) connected to a steel wire through a pin vise that's attached to the wall. • The frame has a hook at the bottom to hang slotted weights. When a load is applied, the plain mirror of the optical lever rotates, causing the light reflected by the mirror to also change direction.