Why do different colors of light travel at different speeds in the air, when they travel at the same

Although the propagation speed of light in a vacuum is the same, due to the different wavelengths and frequencies of different color light, the refractive index of different colors of light in the medium is different, the refractive index is denoted by n, the speed in the medium is set to v, and the speed in the vacuum is c, n=c v, according to which the speed of different colors of light in different media can be deduced.

Light has the same velocity in a vacuum.

However, the frequency of light of different colors is different, and the refractive index in the air is different, and the speed of light from the vacuum, after reaching the medium of air, is c n, n is different, and the speed is different.

Different colors of light travel through the air and are affected differently by the composition of the atmosphere!

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Because they have different wavelengths, so the frequencies are also different, and the resistance in the air is more closely related to the frequency, so the speed of the larger frequency is slower in the air, and the second frequency is smaller and faster.

The propagation speed of light of different colors in a vacuum is the same, and the refractive index of various colors of light in a vacuum is n 1v c n, so the propagation speed of various colors of light in a vacuum is the same.

The essence of all light is electromagnetic waves, and the velocity of electromagnetic waves in a vacuum is c 30,000,000m s.

In different media, each wavelength of electromagnetic waves (such as different colors of visible light) has a refractive index n, and the propagation speed of this wave in this medium v, then n c v, i.e., v c n Because n is different, although c is the same, v is different.

Different colors of light are just different in frequency, they are all electromagnetic waves, so the speed of the wave is still the same, so it travels as fast in the same medium, and light travels the fastest in a vacuum, that is, there is only space, no medium.

The propagation velocity of different light in a vacuum is 3*10 8m s, but the propagation velocity in different media is different. For example, in the case of seven-color light, violet light has the largest frequency, so it has the smallest propagation speed. [You can write down 6 quantities like this:.]

n (refractive index) f (frequency) e (energy) v (velocity) c (deflection angle) wavelength].

Light propagation does not require a medium: the energy of light is carried by photons, and a photon is a particle regardless of it Just like a bullet, a photon flies forward like a bullet after it is shot out of the light source, and there is a medium that has resistance and will slow down! Understand!

Well, it's all the same. The difference is their frequency and wavelength. The same is true in other media.

The theory of relativity and the cosmology explain the speed of light:

In the theory of relativity, Einstein assumed that "the speed of light does not change", so many friends do not understand it and think it is too far-fetched and unreasonable.

In fact, the invariance of the speed of light is an objective existence, not because of Einstein's regulations, but Einstein discovered this open secret of nature before ordinary people. That's the greatness of Einstein. According to the classical theory, we can say that the propagation speed of light in different density media is different, but this difference is definitely not the change of the propagation speed of light, but the change of the propagation direction of light, so that the partial velocity of light in the original propagation direction changes.

The speed of light is always the speed at which light travels in the ether (a stationary photon or vacuum medium), in other words, only the ether has the ability to propagate a "photon". Any other medium with mass can only change the direction of light propagation, but not the speed of light propagation, because a medium with mass does not have the ability to propagate photons.

In a macro vacuum, the speed of light of all colors is the same; In a medium, the speed of light of various colors is different. The instructions are as follows:

1. If it is in a vacuum, the speed of light of various wavelengths (i.e., various colors) is the same, and the specified value of masking is c = 299792458 meters and seconds.

2. If it is in a medium, such as water or air, the speed of light will decrease to v=c n, where n is the refractive index.

The refractive index of light at different wavelengths is different for the same medium, and the shorter the wavelength, the greater the refractive index and therefore the smaller the velocity. For example, in water, red light is faster than violet light.

Different colors of light travel at different speeds in the air.

v = c nv (velocity in air) = c (velocity in vacuum) n (refractive index source of each wavelength in air).

Different wavelengths of light in the visible range show different colors, the wavelength ranges from 400nm (violet) to 800nm (red hail date), the refractive index n of their various wavelengths of light in the air is different, and the propagation speed of light in vacuum jujube is c = 3 * 10 8

So v=c n is different.

Different colors of light travel at different speeds in the air.

v = c nv (velocity in air) = c (velocity in vacuum) n (refractive index source of each wavelength in air).

Different wavelengths of light in the visible range show different colors, the wavelength ranges from 400nm (violet) to 800nm (red hail date), the refractive index n of their various wavelengths of light in the air is different, and the propagation speed of light in vacuum jujube is c = 3 * 10 8

So v=c n is different.

Visible light is a band of electromagnetic waves, and the propagation speed is the same in the same medium Different media have different propagation speeds, and the real model is the fastest in the sky Different colors of light bands are coded with different frequencies of light, and it can also be said that the wavelengths are different Red wavelengths are longer than purple light."

Light is an electromagnetic wave, and the speed of the electromagnetic wave in the medium is not only related to the medium itself, but also related to the frequency of the stupid front of the light, for example, the propagation speed of red light is greater than that of violet light in glass. SummaryIn the same medium, the longer the wavelength (the smaller the frequency), the faster the propagation speed of electromagnetic waves.

Note: In a vacuum, i.e. without a medium, the propagation of various types of light is not affected differently as in other media.