# What color travels fastest through clear glass?

what color travels fastest through clear glass??????

Relevance

Light travels at a constant speed in vaccum... 3 x 10^8 m/s...

But in media like air, glass, different wavelengths in the electromagnetic spectrum travel at different speeds.

Refractive Index n is inversely proportional to wavelength of light.

But refractive index = Speed of light in Vaccum/Speed of light in medium

Hence, speed of light in media is directly proportional to wavelength...

Since wavelength increases from Violet to Red,

Red travels the fastest...

Violet travels the slowest...

• 6 years ago

Red is fastest and Blue is slowest.

• Dr. R
Lv 7

Some of the answers so far are correct in one detail or another, but your mostly getting a lot of BS. The speed of light in a medium v equals the speed of light in vacuum c divided by the index of refraction n. n increase (v decreases) with optical frequency (toward the blue) for most media, but there are important exceptions like plasma (ionized gas) and special glasses. The variation in n with color is the cause of "chromatic aberration" in camera lenses, and those exceptional glasses are included in the lens system to help compensate.

The underlying reason why n usually increases with frequency is a bit technical and has to do with molecular polarizability (the cause of n changes). The electron orbitals of an atom collectively oscillate about the nucleus in response to the electric field of light much like a harmonic oscillator. The characteristic (resonant frequency) is usually in the ultraviolet, and like a harmonic oscillator, the amplitude (polarization) excited by the (optical) driver increases with frequency if it's below resonance.

* A BS alert is issued when the majority of other respondents are giving answers which are wrong or, worse yet, not even wrong.

red light travels the fastest through clear glass

The question does not have enough information. Analytically, you should find out transperancy of the glass because, the spectrum of visible light rays has range of various frequencies so, some get get through and some not, all depends on glass transperancy.

ps. It also depends on atomic structure of the material of the clear glass (even though its clear!)

• 3 years ago

The clearer the water, the speedier it is going to holiday by it. it incredibly is by way of fact if it is not sparkling, which means that some thing's in it. If there is not any longer something in it, then there is not any longer something to impede the sunshine debris.

If you are asking what color travels faster from colors of spectrum(separated), then it is the red; it travels faster in any matter; water, air, glass.....

that is because it has lighter weight of protons if we considered the duality behavior of light as a particle

you can check it if you put a red light and any other color of spectrum at the end of your room or far as you can and look at them your eyes will see the red faster of course you wont exactly see the time difference but you will fell it.

Also if you noticed that alarm lights are red for that reason.

Hope this information was useful.