How is the light beam affected when all media are the same?

This mean all of the waves are now traveling as the same exsact velocity and wavelength .

it´s related to his charming character.

beauty is not everything, although we can joke that girls only care about the physical or material aspect, the truth is that a real woman looks at more important things, besides intelligence and personality, there are other attitudes that make irresistible to men who are 'unattractive'.

for example develop your sense of humor.