Can a Critical Angle Occur When Light Passes from Water to Glass?

[jsalapide]

Is it possible for the critical angle to exist when light goes from water (n=1.33) into glass (n=1.5)?

My used the formula sin(critical angle) = n1/n2.

I'm a bit confused, should the numerator(n1) always be less dense compared to the denominator(n2).

 

[mgb_phys]

Total internal reflection occurs at the boundary of light in a higher n meeting a material of lower n