How do you calculate the absolute index of refraction?

Answer 1

The refractive index of a light beam traveling from air to a specific medium or from a medium to air is known as the absolute refractive index.

So, using Snell's law (for a ray moving from air to a medium), we do as follows:

#n_asini=n_msinr#

where #n_m# is the refractive index of the medium #n_a# is the refractive index of air #i# is the angle of incidence #r# is the angle of refraction

Make #n_m# the subject in the above equation

#=>n_m= (n_asini)/(sinr)# #n_a=1#

#=> n_m= (sini)/(sinr)#

Also, another definition says that #n_m= c/c_m= "speed of light in vacuum"/"speed of light in the medium"#

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Answer 2

Sebastian Acosta

The absolute index of refraction is calculated using the formula:

Absolute Index of Refraction = Speed of Light in Vacuum / Speed of Light in Medium

Mathematically:

[ n = \frac{c}{v} ]

where:

( n ) is the absolute index of refraction,
( c ) is the speed of light in vacuum (approximately ( 3.00 \times 10^8 ) m/s),
( v ) is the speed of light in the medium.

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Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.