The absolute refractive index

hope that helps

Explanation:

The absolute refractive index is defined as the ratio of the speed of light in vacuum and in the given medium.

I believe it's The absolute refractive index is defined as the ratio of the speed of light in vacuum and in the given medium.

(=^-ω-^=)

I hope this information helps you :)! 

Linnaeus divided nature into three kingdoms: animals, vegetable (or plant),  and minerals. The animal and plant kingdoms were further divided into  smaller, more inclusive categories based on physical characteristics.  As time passed, and knowledge increased, other scientists added to  Linnaeus’ original system.

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