Интерферометр

The instrument is a kind of interferometer which is designed with the principle of multi beam interference. It is characterized by very narrow interference fringes can be obtained, so it is always a effective tool for the hyperfine structure spectrum length calculation and research, the multi beam interference principle in laser and optical thin films have important applications in the theory, it is the basic configuration of interference filter and a laser resonant cavity made of optical instruments.
Via this instrument, we can observe the multi beam interference fringes, measure the wavelength difference between sodium and yellow double lines, other experiments (with appropriate devices, observed the spectral shift of mercury isotopes and the Zeeman effect of spectral lines splitting in magnetic fields).