It is known that the value of lateral position Goos-Hänchen shift is only 5-10 μm at a Total internal reflection interface of water and air, which is very difficult to be experimentally measured.
The displacement of light caused by the Goos-Hänchen effect at the boundary between two media, such as water and air, is estimated to be around 5-10 μm, but it is extremely challenging to measure this value accurately through experimental methods.