Definitions for snell's law
snell's law

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1. Snell's law

   Snell's law (also known as Snell–Descartes law and ibn-Sahl law and the law of refraction) is a formula used to describe the relationship between the angles of incidence and refraction, when referring to light or other waves passing through a boundary between two different isotropic media, such as water, glass, or air. In optics, the law is used in ray tracing to compute the angles of incidence or refraction, and in experimental optics to find the refractive index of a material. The law is also satisfied in meta-materials, which allow light to be bent "backward" at a negative angle of refraction with a negative refractive index. Snell's law states that, for a given pair of media, the ratio of the sines of angle of incidence ( θ 1 {\displaystyle \theta _{1}} ) and angle of refraction ( θ 2 {\displaystyle \theta _{2}} ) is equal to the refractive index of the second medium w.r.t the first (n21) which is equal to the ratio of the refractive indices (n2/n1) of the two media, or equivalently, to the ratio of the phase velocities (v1/v2) in the two media. sin ⁡ θ 1 sin ⁡ θ 2 = n 21 = n 2 n 1 = v 1 v 2 {\displaystyle {\frac {\sin \theta _{1}}{\sin \theta _{2}}}=n_{21}={\frac {n_{2}}{n_{1}}}={\frac {v_{1}}{v_{2}}}} The law follows from Fermat's principle of least time, which in turn follows from the propagation of light as waves.

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1. Snell's law

   Snell's law is a formula used to describe the relationship between the angles of incidence and refraction, when referring to light or other waves passing through a boundary between two different isotropic media, such as water, glass and air. In optics, the law is used in ray tracing to compute the angles of incidence or refraction, and in experimental optics and gemology to find the refractive index of a material. The law is also satisfied in metamaterials, which allow light to be bent "backward" at a negative angle of refraction with a negative refractive index. Although named after Dutch astronomer Willebrord Snellius, the law was first accurately described by the scientist Ibn Sahl at Baghdad court, when in 984 he used the law to derive lens shapes that focus light with no geometric aberrations in the manuscript On Burning Mirrors and Lenses. Snell's law states that the ratio of the sines of the angles of incidence and refraction is equivalent to the ratio of phase velocities in the two media, or equivalent to the reciprocal of the ratio of the indices of refraction: with each as the angle measured from the normal of the boundary, as the velocity of light in the respective medium and as the refractive index of the respective medium.

How to pronounce snell's law?

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How to say snell's law in sign language?

Numerology

1. Chaldean Numerology

   The numerical value of snell's law in Chaldean Numerology is: 5

2. Pythagorean Numerology

   The numerical value of snell's law in Pythagorean Numerology is: 9

References

1. ^ Wikipedia
   https://en.wikipedia.org/wiki/Snell'S_Law
2. ^ Wikidata
   https://www.wikidata.org/w/index.php?search=snell's law