A Michelson interferometer was used for the purpose of measuring the refractive
index of air as a function of its respective pressure.
The He-Ne laser was used as its light source.
Following empirical relationship between refractive index and press...
A Michelson interferometer was used for the purpose of measuring the refractive
index of air as a function of its respective pressure.
The He-Ne laser was used as its light source.
Following empirical relationship between refractive index and pressure was
deduced from experimental data, as shown below,
n=1+(3.5±0.1)X10^(-7)·P
The calculated values of index of refraction for air at 1 atmospheric pressure
is n_(air)=1.00027, which are in good agreement with its found in the
literature.