Since the refractive index for a given medium changes depending on the wavelength of light, Brewster's angle will also vary with wavelength.

Since the focal length f of a lens is dependent on the refractive index n, different wavelengths of light will be focused on different positions.

Since the cornea does not grow back, laser is used to remodel the cornea refractive properties to correct refraction errors, such as astigmatism, myopia, and hyperopia.

Since a gentleman must, if possible, avoid sullying them by work, his hands, as importantly as his accent, become the index of social status.

Since 1985, the Britannica has had four parts: the Micropædia, the Macropædia, the Propædia, and a two-volume index.

Since 2001, trim levels are also indicated by including a number after the main index: '- 00 ' means base trim level, '- 01 ' means standard trim and '- 02 ' designates deluxe version ; for example, VAZ-21121-02 means Lada 112 hatchback with an 1. 6L SOHC engine and deluxe trim.

Since a proportion must be between 0 and 1, inclusive, the index α must be positive, but in order for the total income of the whole population to be finite, α must also be greater than 1.

Since January 2010 the index is updated every 15 seconds during trading sessions.

Since the field inside a parallel plate capacitor depends linearly on the potential, the index of refraction depends linearly on the field ( for crystals where Pockels effect dominates ), and the phase depends linearly on the index of refraction, the phase modulation must depend linearly on the potential applied to the EOM.

Since data points are represented by the index of their closest centroid, commonly occurring data have low error, and rare data high error.

Since index funds aim to match market returns, both under-and over-performance compared to the market is considered a " tracking error ".

Since some indices, such as the S & P 500 and FTSE 100, are dominated by large company stocks, an index fund may have a high percentage of the fund concentrated in a few large companies.

Since only the positions in space – time are being warped, not the fields, the Ψ are all zero and the X < sub > μ </ sub >< sup > ν </ sup > equal the Kronecker delta δ < sub > μ </ sub >< sup > ν </ sup >, where we have used μ instead of r for the index.

Since 1999, ERGO has hosted the suicide device research group NuTech which meets in various world cities to examine new ways of legal self-deliverance .< ref > Info provided by Euthanasia Research & Guidance Organization ( ERGO ) < http :// www. finalexit. org / index. html >.</ ref >

Since December 2003, the index weightings of companies in the index have been capped at 15 % at each quarterly index review, but these range freely with share price subsequently.

Since February 2009 the IPC index has included BMV's own A shares.

Since patients often do not know how severe their conditions are, originally to calculate the index nurses were supposed to go through the patient's chart and determine whether the patient had a particular condition.

Since bosons are symmetric in the single-particle state index we of course, demand that and commute,

Since u can be defined as the utility received from a set of goods measured in quantity, q, u can be replaced with f ( q ) to produce a version of the true cost of living index that is based on price and quantities like most other price indices:

Since the utility from q < sup > 0 </ sup > in the first year should be equal to the utility from q < sup > 0 </ sup > in the next year, Laspeyres gives the upper bound for the true cost of living index.

Since upper and lower bounds of the true cost of living index can be found, respectively, through the Laspeyres and Paasche indices, the geometric average of the two, known as the Fisher price index, is a close approximation of the true cost of living index if the upper and lower bounds are not too far apart.

Since the absorption of radio waves in rocklike material varies with wave length, it should be possible to sample the temperature variation at different depths beneath the surface and possibly detect changes in the structure or composition of the lunar surface material.

Since the speed of sound varies with temperature, and is virtually stable with pressure change, sonic anemometers are also used as thermometers.

Since the acronym FAQ originated in textual media, its pronunciation varies ; " fack ", " faak ", " fax ", and " facts " are commonly heard.

Since the dipole magnetic field strength varies with distance as the magnetic field strength can be written as.

Since power varies with the cube of velocity, the power required for the operation is also less.

Since this angle varies depending on system loading and generation, it is undesirable for the angle to approach 90 degrees.

Since the temperature on the outside of the suit varies greatly between sunlight and shadow, the suit is heavily insulated, and air temperature is maintained at a comfortable level.

Since the dielectric strength of gases varies depending on the shape and configuration of the electrodes, it is usually measured as a fraction of the dielectric strength of Nitrogen gas.

Since the path length varies, generally, so will the phases of the waves at that point from each of the slits, and thus will add or subtract from one another to create peaks and valleys, through the phenomenon of additive and destructive interference.

Since this force varies with the position of the charge and by Coloumb's Law it is defined at all points in space, is a continuous function of the charge's position ( x, y, z ).

Since appropriate language use is conventionally defined, and varies across different communities, much of Hymes early work frames a project for ethnographic investigation into contrasting patterns of language use across speech communities.

Since good tracking depends on the exact distance between the rotating drum and the fixed control / audio head reading the linear tracks, which usually varies by a couple of micrometers between machines due to manufacturing tolerances, most VCRs offer tracking adjustment, either manual or automatic, to correct such mismatches.

Since each individual's tolerance to lactose varies, according to the U. S. National Institutes of Health ( NIH ), " Dietary control of lactose intolerance depends on people learning through trial and error how much lactose they can handle.

Since gravity only varies by a maximum of 0. 5 % over the Earth, and in most locations much less than that, the weight only had to be adjusted slightly.

Since it is extensive from near the Schuylkill River in the NE to the Lancaster County border in the SW, its terrain varies considerably.

Since impedance varies inversely with capacitance, the internode capacitance, C, will be seen to have been replaced by a capacitance of KC from input to ground and a capacitance of ( K-1 ) C / K from output to ground.

Since each state has its own police force, the uniforms and insignia of the police varies, though the rank structure is same.

Since there are different types of codes, with differing levels of public safety impact, the severity of consequences and punishment varies.

Since the 18th century, the unit has been used in low-precision measurements, for which small changes in Earth's gravity ( which varies from place to place by up to half a percent ) can safely be neglected .< ref > Acceleration due to gravity varies over the surface of the Earth, generally increasing from about 9. 78 m / s < sup > 2 </ sup > ( 32. 1 ft / s < sup > 2 </ sup >) at the equator to about 9. 83 m / s < sup > 2 </ sup > ( 32. 3 ft / s < sup > 2 </ sup >) at the poles .</ ref >

Since the upper atmosphere is not homogeneous and contains significant magnetic structure, the solar ultraviolet ( UV ), EUV and X-ray flux varies markedly in the course of the solar cycle.

Since the frequency of solar eruptive events is strongly modulated by the solar cycle, the degree of cosmic ray scattering in the outer solar system varies in step.

Since the angular speed of rotation of the galactic disk varies with distance from the centre of the galaxy ( via a standard solar system type of gravitational model ), a radial arm ( like a spoke ) would quickly become curved as the galaxy rotates.

Since the permanent magnet field is constant, the terminal voltage varies directly with the speed of the generator.