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Refractive indices, n, have no units because they are ratios. They are the ratio of the speed light in a vacuum C, (~3x108m/s) to speed of light in the medium vm. Therefore:

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15y ago
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11y ago

No unit for the refractive index of material, as it is the ratio of the velocity of light in vacuum to that in the medium.

Also it is the ratio of sine values of angles of incidence to that of angle of refraction.

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11y ago

It is dimensionless. It is the ratio of the speed of light in a vacuum, to the speed of light in the substance under consideration. For example, if the speed of light in a substance is 200,000 km/sec, then this ratio would be (300,000 km/sec) / (200,000 km/sec) = 1.5. The units disappear, and you get the same result if you first convert the speeds to kilometers per hour, miles per hour, angstroms per year, knots, etc.

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1w ago

The unit of specific refraction index is dimensionless. It is a ratio of the speed of light in a vacuum to the speed of light in a specific medium, so it does not have any units.

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14y ago

Refractive index is a dimensionless constant - a pure number.

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9y ago
The SI unit of molar refractivity is cubic metre per mole (m3/mol).
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Q: What is the unit of specific refraction index?
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What is the index of refraction used to measure?

The index of refraction is used to measure how much light slows down when passing through a material compared to its speed in a vacuum. It is a measure of how much the speed of light is reduced in a material. The index of refraction is unique to each material and determines the bending of light as it passes through different mediums.


What is the bending of light rays as it passes from one material into another?

Index Of Refraction


How do you think increasing a medium's index of refraction might affect the angle of refraction?

Q: How do you think increasing a medium's index of refraction might affect the angle of refraction?


When light passes from a medium with a high index of refraction into a medium with a lower index of refraction which direction does the light bend?

A medium with a higher index of refraction, like diamond, is more dense than the medium with a lower index of refraction, like air. If the ray of light is moving from the less dense medium (lower index of refraction), to a more dense (higher index of refraction) the ray of light bends TOWARDS the normal.


How is the refractive index of glass is to water is related with that of air is to water?

The refractive index of a medium indicates how much light is bent as it passes through the medium. The refractive index of glass is higher than that of water, which means light bends more in glass than in water. Similarly, the refractive index of air is lower than that of water, so light bends less in air than in water. This difference in refractive index leads to the phenomenon of refraction when light passes from one medium to another.


When the mineral uvarovite has an index of refraction of 1.86. calculate the speed of light in this sample of uvarovite?

Use the definition of "index of refraction". In this case, you simply need to divide the speed of light in a vacuum by the index of refraction.


What is the refraction index of oil?

200


What is a property of a material that indicates how much it reduces the speed of light?

The property of a material that indicates how much it reduces the speed of light is called the refractive index. This value represents how much a material bends or slows down light as it passes through it compared to the speed of light in a vacuum.


How is the index of refraction of a medium related to the speed light of in the medium?

c divided by the index of refraction of the medium = the speed of light in the medium.


does light travels three-fourths as fast through water as it does a vacuum. what is water's index in refraction?

Water's index of refraction is 1.333


When the mineral uvarovite has an index of refraction of 1.86. calculate the speed of light in this sample of uvarovite.?

Use the definition of "index of refraction". In this case, you simply need to divide the speed of light in a vacuum by the index of refraction.


What is the index of refraction for air?

Approximately 1