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Index of Refraction, physics? | Yahoo Answers

source : yahoo.com

Index of Refraction, physics? | Yahoo Answers

the angle of the ray inside the glass is determined from the law of refraction

n1 sinx1 = n2 sin x2

n1=1 (since the light is in air)

x1=43.5

n2=1.52

so

sinx2=1(sin 43.5)/1.52

x2=arcsin(0.45) = 26.9 deg

when this enters water (n=1.33), we have

1.33 sin(x water)= 1.52 sin 26.9

sin(x water) = 1.52 sin 26.9/1.33

x water = arcsin(0.52)=31.1 deg

if the ray entered the water directly:

1 sin 43.5 = 1.33 sin x

sin x = 0.52 so x=31.1 deg

Refraction of Light Rays, Examples and Solutions

Refraction of Light Rays, Examples and Solutions – The refractive index measure the optical density of a given material. A material with higher refractive is more optically dense than a material with lower Refraction occurs at the interface or boundary of two media with different refractive indices. It is the bending of light rays when transmitted into the…This means that the index of refraction for long wavelengths is smaller than for shorter wavelengths. As the diagram shows, at normal angles to the sun in daytime, colors in the blue end of the spectrum are refracted most by the atmosphere, and tend to strike the surface where we live.Refraction is the bending of a wave when it enters a medium where its speed is different. The refraction of light when it passes from a fast medium to a slow medium The amount of bending depends on the indices of refraction of the two media and is described quantitatively by Snell's Law.

Refraction – First Known Use of index of refraction. 1829, in the meaning defined above. What made you want to look up index of refraction? Please tell us where you read or heard it (including the quote, if possible).Refraction in a medium with varible refractive index. A biconvex lens has focal length (2)/(3) times the radius A ray of light is incident on the surface of a glass plate of index of refraction 1.55 at the polari… Define the refraction index of the second medium with respect to the first medium.Refractive index , also called index of refraction , measure of the bending of a ray of light when passing from one medium into another. The variation of refractive index with wavelength is the source of chromatic aberration in lenses .

Refraction

Refraction of Light | Index of Refraction – The refractive index is measured as the change of velocity of light through water and the sample, the electrical permitivity of the material and the magnetical permeability of the material define this differences. Question 1: Refractive index may change because the density of the material changes.Index of refraction of any material is strongly dependent on the wavelength (frequency) of light used to measure it. Standard index of refraction measurements are taken at the "yellow doublet" sodium D line, with a wavelength of 589 nanometers (509 THz).The index of refraction of the cladding is 1.47. What is the maximum angle a light ray can make with the wall of the core if it is to remain inside the fiber?

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