Abstract: In traditional optical lever method for measuring Young^,s modulus, it needs to measure the distance between the optical lever plane mirror and the ruler. It is inconvenient to measure the larger distance between the optical lever plane mirror and the ruler in experimental operation. In this paper, a translation stage with reading device is installed under the ruler of the traditional optical lever instrument. It makes the experimental measurement more convenient by obtaining the change of the distance between the optical lever plane mirror and the ruler via the reading device of the translation stage. Moreover, the random error can be reduced through multiple measurements.

Key words: Young^,s modulus, tensile method, optical lever, translation stage