Light, dielectric medium, c, wavelength

[crx]

What is happening to a ray of light of a certain wavelength that passes through a transparent dielectric medium?
Ex: Green light enters in a Bose–Einstein condensate, and slows down some. Than the light is coming out of the medium in free space. What will be the speed of the ray light and what will happen to the wavelength of the light?

- my guess is that speed will be the same (c) and wavelength will decrease so well have some red light coming out...-

 

[atyy]

In the dielectric, the frequency will stay the same, the speed will change.