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Speed of light is dependent on density of medium and is inversely proportional to density of medium. Density of air is greater than vaccum. Therefore light moves slower in air than vaccum.

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Can electrons move slower than the speed of light?

They can ONLY move slower than the speed of light.


What happens to frequency does the speed of light ever change?

The speed of light IN A VACUUM is always the same. In substances other than the vacuum, the speed of light is usually slower than in a vacuum.


How fast does light move through water?

Light travels through water at a speed of about 225,000 kilometers per second, which is approximately 25% slower than its speed in a vacuum.


Does light travel faster underwater than in air?

As compared to what? Compared to air, or to a vacuum, light travels quite a bit slower in water.As compared to what? Compared to air, or to a vacuum, light travels quite a bit slower in water.As compared to what? Compared to air, or to a vacuum, light travels quite a bit slower in water.As compared to what? Compared to air, or to a vacuum, light travels quite a bit slower in water.


Why oil light travel slowest?

Light travels slower in oil than in a vacuum because oil has a higher refractive index than a vacuum, which causes light to slow down as it moves through the medium. The denser the medium, the slower light will travel.


How does a medium (matter)affect the speed of light?

When light goes through any medium other than a vacuum, its speed is normally slower than in a vacuum.


How does light change speed from glass to air?

In glass, light will go somewhat slower than in a vacuum. Air is almost like a vacuum, with respect to the speed of light - some difference still exists, though.In glass, light will go somewhat slower than in a vacuum. Air is almost like a vacuum, with respect to the speed of light - some difference still exists, though.In glass, light will go somewhat slower than in a vacuum. Air is almost like a vacuum, with respect to the speed of light - some difference still exists, though.In glass, light will go somewhat slower than in a vacuum. Air is almost like a vacuum, with respect to the speed of light - some difference still exists, though.


Do the electrons move the speed of the light?

No, because the orbital is really just an abraction - the electron isn't racing around the orbital like a racecar, so there isn't a speed. The orbital is a better measure of the electrons potential energy.


Does light travel faster in glass than in a vacuum?

No, slower. Light travels fastest in a vacuum. Anything transparent that light can pass through slows it down somewhat. Diamond crystal slows it down notably, which is part of what causes the "fire" in a diamond.


Does microwaves travel faster than ultraviolet?

Yes, microwaves travel slower than ultraviolet light in a vacuum. This is because microwaves have longer wavelengths and lower frequencies than ultraviolet light, leading to a slower travel speed.


Is it possible for anything to move faster than light?

According to the theory of relativity, nothing can move faster than the speed of light in a vacuum.


Can light travel with lower speed than light speed?

Light can certainly travel slower than its speed in vacuum ... 299,792,458 meters per second.It travels slower than that whenever it's traveling through anything other than vacuum, such as air, water, glass, jello, etc.Light slows when it travels through any material medium. In fact, the speed of light in a medium is equal to the speed of light in a vacuum divided by the index of refraction of the medium.