Snell Law Calculator app for iPhone and iPad

Snells Law Calculator are physic/math calculator to find angle of refraction, angle of incidence, refraction index of medium containing the incident ray or refraction index of medium containing the transmitted ray fast and easy.

Features:
- Instant calculation
- Result are copy able to other app
- Formula are include as reference
- Support up to 16 decimal place
- Support various unit for each input

Snells law (also known as Snell–Descartes 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.

Snells Law describes the behavior of light when it encounters media having varying refractive indices. A refractive index is an expression of the ratio of the speed of light in a given medium versus its speed in a vacuum (with a refractive index of 1). I should add that lights speed doesnt actually change — its more accurate to say that light takes a longer trip, with more delays, at full speed in glass than in air.

There is no critical angle when the refractive index of the medium containing the incident ray is less than the medium with the transmitted ray.

Snells law describes a ray refracts at an interface between materials. Snells Law formula:
n₁ * sin (θ₁) = n₂ * sin (θ₂)

where:
n₁: Indices of refraction of Medium 1, dimensionless
θ₁: Angle of incidence, in radian
n₂: Indices of refraction of Medium 2, dimensionless
θ₂: Angle of transmission, in radian

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