I have a question, say a wave of light is emitted, and it passes through water, changing it's wave length to 380nm inside the water, once it comes out of the water, to vacuum will the wavelength remain at 380nm or will it change?
I think this must be one of the most frequently asked questions in Physics. Strange - but not so strange is that we all accept the fact that sound doesn't change frequency as it passes through different media. Where's the difference between the two ideas? Imo, it has to be because we started off (and still do, largely) by quantifying light in terms of its wavelength but we hear the frequency of sound.once it comes out of the water, to vacuum will the wavelength remain at 380nm or will it change?