Help


[permalink] [id link]
+
Page "Snell's law" ¶ 46
from Wikipedia
Edit
Promote Demote Fragment Fix

Some Related Sentences

refractive and indices
The tables include those for the classification angles, refractive indices, and melting points of the various types of crystals.
where n < sub > d </ sub >, n < sub > F </ sub > and n < sub > C </ sub > are the refractive indices of the material at the wavelengths of the Fraunhofer d -, F-and C-spectral lines ( 587. 6 nm, 486. 1 nm and 656. 3 nm respectively ).
The ratio of the refractive indices of the media determines the degree of refraction, and is summarized by Snell's law.
Note that this statement is only true when the refractive indices of both materials are real numbers, as is the case for materials like air and glass.
In terms of the ratio of refractive indices,
Most materials used for LED production have very high refractive indices.
It is used to examine the adhesion of cells to a glass surface, using polarized light of a narrow range of wavelengths to be reflected whenever there is an interface between two substances with different refractive indices.
Water will only allow NAs of up to ~ 1. 4, but materials with higher refractive indices will allow the effective NA to be increased further.
where θ < sub > 1 </ sub > and θ < sub > 2 </ sub > are the angles of incidence of a ray crossing the interface between two media with refractive indices n < sub > 1 </ sub > and n < sub > 2 </ sub >.
Refraction of light at the interface between two media of different refractive indices, with n < sub > 2 </ sub > > n < sub > 1 </ sub >.
When a light beam crosses a boundary between materials with different kinds of refractive indices, the light beam will be partially refracted at the boundary surface, and partially reflected.
The directions of incidence and refraction are related to the refractive indices of the two materials by Snell's law.
In an optically active material, the two circular polarizations experience different refractive indices.
When light encounters a boundary between two media with different refractive indices, some of it is usually reflected as shown in the figure above.
is the difference in refractive indices of core and cladding,
An interference filter consists of multiple thin layers of dielectric material having different refractive indices.
In an optical fiber, material scattering is caused by micro-inhomogeneities in the refractive indices of the materials used to fabricate the fiber, including the dopants used to modify the refractive index profile.
where n is the index of refraction of the medium in which the lens is working ( 1. 0 for air, 1. 33 for pure water, and up to 1. 56 for oils ; see also list of refractive indices ), and θ is the half-angle of the maximum cone of light that can enter or exit the lens.
With respect to one another, their relative refractive indices are, in order of distance from the core: lowest, highest, lower, higher.
The lowest-order bounds mode is ascertained for the wavelength of interest by solving Maxwell's equations for the boundary conditions imposed by the fiber, which are determined by the core diameter and the refractive indices of the core and cladding.
A step-index fiber is characterized by the core and cladding refractive indices n < sub > 1 </ sub > and n < sub > 2 </ sub > and the core and cladding radii a and b. Examples of standard core and cladding diameters 2a / 2b are 8 / 125, 50 / 125, 62. 5 / 125, 85 / 125, or 100 / 140 ( units of µm ).
is the difference in refractive indices of core and cladding.
The refractive indices are subject to spatial and temporal changes.
Another way to alter the dispersion is changing the core size and the refractive indices of the material of core and cladding.

refractive and water
Variations in the water content alter the refractive index of honey.
The liquid used is typically ultra-pure, deionised water, which provides for a refractive index above that of the usual air gap between the lens and the wafer surface.
Air has a refractive index of about 1. 0003, and water has a refractive index of about 1. 33.
Due to the different refractive index of water and air, refraction and reflection occur on the surfaces of raindrops, leading to rainbow formation.
Reflectivity of smooth water at 20 ° C ( refractive index = 1. 333 )
The indices of refraction of the media, labeled, and so on, are used to represent the factor by which a light ray's speed decreases when traveling through a refractive medium, such as glass or water, as opposed to its velocity in a vacuum.
Fluorocarbon fishing line is made of the fluoropolymer PVDF and it is valued for its refractive index, which is similar to that of water, making it less visible to fish.
With all the important work he accomplished in physics – the enunciation of Boyle's law, the discovery of the part taken by air in the propagation of sound, and investigations on the expansive force of freezing water, on specific gravities and refractive powers, on crystals, on electricity, on colour, on hydrostatics, etc.
Such aberrations however, can be significantly reduced by mounting samples in optically transparent, non-toxic perfluorocarbons such as perfluorodecalin, which readily infiltrates tissues and has a refractive index almost identical to that of water.
For example, particles accelerated beyond the speed of light in a refractive medium ( where the speed of light is less than that in a vacuum, such as water ) create visible shock effects, a phenomenon known as Cherenkov radiation.
While he deduced the correct relation for water, he was unable to do so for glasses due to the low quality of materials available to him ( most glasses at that time showing a variation in refractive index between the surface and the interior of the glass ).
* Léon Foucault demonstrates the greater speed of light in air than in water, and establishes that the speed of light in different media is inverse to the refractive indices of the media, using the Fizeau-Foucault apparatus.
In fish, and aquatic vertebrates in general, the cornea plays no role in focusing light, since it has virtually the same refractive index as water.
The objective is specially designed and refractive index matching oil or water must fill the air gap between the front element and the object to allow the numerical aperture to exceed 1, and hence give greater resolution at high magnification.
It gives the water an appearance of wrinkled glass that is often used to obscure bathroom windows and is caused by the altered refractive index of the cold or warm water column.
Total internal reflection occurs when the first medium has a larger refractive index than the second medium, for example, light that emerges from under water.
Therefore, the refractive index of water at 20 degrees Celsius, taken at the Sodium D Line, would be reported as 1. 3330 nD20.
Dissolution of sucrose and other sugars in water changes not only its specific gravity but its optical properties in particular its refractive index and the extent to which it rotates the plane of linearly polarized light.
Alcohol has a higher refractive index at 1. 361 than water at 1. 333.
When water is employed as the medium, it greatly increases numerical aperture, since it has a refractive index of 1. 44 at 193nm, while air has an index of 1.
That's because the same forces at work in the water — gravitational effects, settlement, refractive indicesare happening in outer space ," Parks said.

0.125 seconds.