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No. This would imply that the speed of light in that medium was greater than the speed of light in a vacuum, which is physically impossible according to the theory of relativity.

The relative index of refraction can be negative... that is, the speed in the medium may be faster than the speed in the surrounding environment... but the absolute IR cannot be negative.

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Q: Can the index of refraction ever be less than zero?
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Related questions

If light cannot travel faster than it does in a vacuum no index of refraction can ever be less than zero?

True ---Apex.


Since light cannot travel faster than it does in a vacuum no index of refraction can ever be less than one?

True


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.


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

Index Of Refraction


Why the index of refraction is greater than to one?

It is because the index is related to the velocity of light in air (ideally vacuum) and the medium in question. Since the velocity of light in vacuum is greater than it can be in any other media, the index of refraction of these other media relative to the vacuum is greater than 1.However, if you studied light travelling through glass and then water, the index of refraction between those two would be 0.89 (approx).


What is optical medium?

Optical dense refers to the index of refraction. If one medium is optically denser than another, then its index of refraction is larger, meaning the speed of light in the optically denser medium is smaller.


What is the value of index or refraction of a medium?

The index of refraction tells you by which factor the speed of light in the medium is slower than in a vacuum. This value is 1 for a vacuum, and a number greater than 1 for other media. The exact value depends on the medium.


What is Optical denser medium?

Optical dense refers to the index of refraction. If one medium is optically denser than another, then its index of refraction is larger, meaning the speed of light in the optically denser medium is smaller.


What is true of an index it must be larger than a 100?

No, it does not. It the quantity being measured is less than it was in the base period, ten the index will be less than 100.No, it does not. It the quantity being measured is less than it was in the base period, ten the index will be less than 100.No, it does not. It the quantity being measured is less than it was in the base period, ten the index will be less than 100.No, it does not. It the quantity being measured is less than it was in the base period, ten the index will be less than 100.


Why is the index of refraction always greater than 1?

It is not, so the question is based on a fundamental misunderstanding.


How can the path of a light ray affect once it enters a nonzero angle with an index of refraction greater than the original medium?

how can the path of a light ray be affected once it enters a nonzero angle with a greater index of refraction


What does refractive index mean?

The amount of refraction depends on the difference in density between two mediums. So, the amount of refraction a material has, or it's refraction index, is the amount light will bend as it goes from medium into another medium. For instance, Vacuum is considered to have a refraction index of 1 and all other materials being denser than vacuum will naturally have a larger refraction index, they bend light more. So, it simply means that- since the object has a high density it will slow down light by a greater amount.