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It will depend on the type of glass, and something called its refractive index. All materials have a refractive index which will effect the speed of the light through it. The speed of light through a vacuum is 3.0x10^8 m/s, and a material such as glass will be lower than this.

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Q: How does the speed of light in glass compare to the speed of light in a vacuum?
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Related questions

How does the average speed of light glass compare with its speed in a vacuum?

About 2/3 its speed in a vacuum.


How does the average speed of light in glass compare with its speed in a vacuum?

3/4th


How does the average speed of light in glass compare with its speed in vacuum?

Depends on the refractive index of the medium itself


How does the speed of light compare in water glass and diamond?

Speed of light in vacuum = ' c '-- Speed of light in Air . . 99.97% of ' c '.-- in Water . . . . . . . . 75% of ' c '.-- in Crown Glass . . . 64.9%-- in Flint Glass . . . . . 61.7%-- in Diamond . . . . . . 41.3%


Where will be speed of light minimum-water or air or vacuum or glass?

The speed of light is minimum in Glass. It is because light travels at minimum speed in solids.


How does the speed of visible light compare with the speed of gamma rays when both speeds are measured in a vacuum?

The speed of light in glass is the reciprocal of the refractive index of the glass or 1/(refractive index). Not all glass is the same: its refractive index can range from less than 1.5 for Pyrex (a borosilicate glass) to more than 1.9 for (impure) flint glass. This means the speed of light in glass can range between 0.52 and 0.68 of its speed in vacuum.


Does the speed of light minimum in air or water or glass or vacuum?

glass


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.


How does the speed of microwaves compare to the speed of visible light when measured in a vacuum?

They are equal.


How does the average speed of light in glass compass with its speed in a vacuum?

There are several different types of glass, and light has a somewhat different speed in each of them. On the average, the speed of light across all typical types of glass is in the neighborhood of 2/3 its speed in vacuum, or around 200,000 km/sec .


How does the speed of light that emerges from a pane of glass compare with the speed of light incident on the glass?

Those speeds are equal, even though the speed of the light was temporarily less while it was inside the glass.


Does light travel fastest in space in air in water or through glass?

Light's apparent speed is fastest definitely in a vacuum and slower in water or glass. Light in air behaves more like in a vacuum than in water or glass.