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Visible light slows down by a VERY small amount when in air, compared to its speed in a vacuum. It slows down a bit more passing through water, still more passing through glass, and quite a bit passing through a cut diamond (this is what gives a diamond it's "fire"). None of these "slowdowns", however are remotely enough for us to actually be aware of.
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∙ 12y ago
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Is the speed of light slower in air or in a vacuum?
Speed of light is max. in vaccum and slower in air.
Compared to air the speed of light in water is?
Slower.
Why light is refracted as it moves from air into glass?
That's related to the fact that the speed of light in glass is slower than the speed of light in air.
Is the light travels SLOWER in air than water is the best explanation why the pencil appears broken at the boundary air and water?
Yoiu can explain that observation with the difference of the speed of light in air and in water. But in fact, the speed is FASTER in air and SLOWER in water.
Does Light moves slower through water than through air?
The speed of light is constant
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.
Is the speed of sound equal to an electromagnetic wave?
No, speed of sound in air is much slower than the speed of light in vacuum.
Can electrons move slower than the speed of light?
They can ONLY move slower than the speed of light.
What is the speed of light in a brain?
slower than the speed of light
Which factors affect the velocity of light?
The speed of light in a vacuum is constant. Otherwise, the speed of light will depend on what materials it travels through. For example, the speed of light in air is similar to the speed of light in a vacuum; in water, it is quite a bit slower.
Why light move slower in air than vacuum?
Light moves slower in air than in a vacuum because air molecules and atoms can interact with the electromagnetic waves of light, causing them to scatter and slow down. In a vacuum, there are no particles to interact with, so light can move through it at its maximum speed of approximately 299,792,458 meters per second.
Is speed of light uniform or not?
The speed of light in a vacuum is constant everywhere. The speed of light in a particular medium depends on what the medium is. It moves slower in air than in a vacuum, and slower in water than in air.
