refractivity

Definitions

  • WordNet 3.6
    • n refractivity the physical property of a medium as determined by its index of refraction
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Century Dictionary and Cyclopedia
  • Interesting fact: The telescope at the Lick Observatory on Mount Hamilton, in California, also serves as a tomb. The 36-inch refracting telescope is mounted on a pillar that contains the remains of Jack Lick, who died in 1876. Lick was a wealthy financier and philanthropist who financed the construction of the observatory that bears his name.
    • n refractivity See the quotation.
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Usage

In literature:

Each had some quality of refraction which made it look as though it contained a star.
"The Lady of the Shroud" by Bram Stoker
In his clear northern flesh and his fair hair was a glisten like sunshine refracted through crystals of ice.
"Women in Love" by D. H. Lawrence
CURIOUS EFFECT OF REFRACTION.
"Two Expeditions in the Interior of Southern Australia, Volume II" by Charles Sturt
CURIOUS EFFECT OF REFRACTION.
"Two Expeditions into the Interior of Southern Australia, Complete" by Charles Sturt
A little warmth came into them and into his cheeks, refracted from her bloom.
"The Forsyte Saga, Complete" by John Galsworthy
Truth is clear and single, but the lights are parti-colored and refracted in the prism of hypocrisy.
"The Rise of the Dutch Republic, Volume I.(of III) 1555-66" by John Lothrop Motley
Either a body absorbs light, or it reflects or refracts it, or does all these things.
"The Invisible Man" by H. G. Wells
At first he thought it was a mere sparkle or refraction in his own eyesight; he blinked and cleared his eyes.
"The Ball and The Cross" by G.K. Chesterton
Whatever was flat extended, whatever was bent curved, whatever was inclined slid, and whatever was broken refracted the more.
"Mogens and Other Stories" by Jens Peter Jacobsen
Mirages, too, were of frequent occurrence on the great plains; some of them wonderful examples of the refracting properties of light.
"The Old Santa Fe Trail" by Henry Inman
Its properties of translucence and refraction enabled skilful artists to perform marvels.
"The Moon Metal" by Garrett P. Serviss
Straight down, old chap; but you must allow for the water's refraction.
"Hunting the Skipper" by George Manville Fenn
Dissolved in water, their refraction is the same.
"Great Men and Famous Women. Vol. 6 of 8" by Various
It was like the sunlight which she knew to be shining somewhere, with a wrong refraction in its rays.
"The Dust Flower" by Basil King
There was thus produced a very singular effect of refraction.
"A Winter Amid the Ice" by Jules Verne
Air being less dense than water has not quite so strong a refracting power, but still it has some.
"The Children's Book of Stars" by G.E. Mitton
Ah, this cursed refraction!
"The Voyages and Adventures of Captain Hatteras" by Jules Verne
Refraction had to be figured, perhaps.
"Lords of the Stratosphere" by Arthur J. Burks
Refraction elevates the apparent place of a body, while parallax depresses it.
"Letters on Astronomy" by Denison Olmsted
Such refractions are constantly produced without our noting them.
"Essays in Experimental Logic" by John Dewey
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In poetry:

O light beheld as through refracting tears.
Here is the aura of that world
each of us has lost.
Here is the shadow of its joy.
"Monet's Waterlilies" by Robert Hayden
Her sledgy car, with sparkling frost-work bright,
O'er the pellucid ice her snow-birds drew,
And on her fleecy robe's refracted light
The full-blown rose's vermeil colours threw.
"The Complaint Of The Goddess Of The Glaciers To Doctor Darwin" by Helen Maria Williams
Yet 'mid these sun—confronting peaks,
The undesisting spirit seeks
To mount to loftier, rarer height.
Are what we see but toys of sense,
And we who see them but a lens
Refracting heavenly light?—
"Celestial Heights" by Alfred Austin
O little souls! as pure and white
And crystalline as rays of light
Direct from heaven, their source divine;
Refracted through the mist of years,
How red my setting sun appears,
How lurid looks this soul of mine!
"Weariness. (Birds Of Passage. Flight The Second)" by Henry Wadsworth Longfellow
The moonlight lends her grace, but have a care:
Behind her waits the fairy Melusine.
The sun those beams refract died years ago.
The moat has a romantic air
But it is choked with nettles and obscene
And phallic fungi rot there as they grow.
"Beware of Ruins" by A D Hope

In news:

Instrumental strategies A Revolutionary Refractionist Topcon introduces the world's first patient-assisted refraction system.
Premium IOL and Refractive Technology Options.
If I get a refraction with a 20° difference in axis as compared to the reading recommended by the Z-view, I use my own manifest refraction .
When we started using the Z-View Aberrometer, we saw that, in most cases, our refraction , autorefractor and wavefront readings all correlated.
Refractive surgery is a general term for surgical procedures that can improve or correct your eye's focus by permanently changing the shape of the cornea.
Take a big overriding theme, shoot it through the prism of John Steinbeck's life and works, and refract it over several days in many different directions.
State-of-the-art refractive surgery uses wavefront correction.
Sun sneaks in, refracts off glass and starts cardboard display burning.
MEMS Optical is a supplier and manufacturer of both refractive (microlens arrays) and diffractive (beam shapers and beam splitters) micro optics and of MEMS devices such as scanning tilt micro mirrors and deformable mirrors.
"James Carpenter Environmental Refractions" by Sandro Marpillero is a thorough compilation of the architecturally related projects of the New York City architect.
Refraction/Reflection with 100 black-and-white photographs taken in the 19th and 20th centuries: through Aug 5.
In Saturn 's shadow, the southern hemisphere of Titan is lit by two sources: sunlight scattered through the planet's rings and refracted sunlight passing through the edge of Saturn 's atmosphere.
If they ask why the sky is blue, they don't want to hear about the refraction of sunlight through a prism.
In a city rarely noted for exemplary commercial office architecture, Krueck + Sexton 's design defies boxy conventions by featuring a diagonal refracted crease in its north-facing glass curtain wall.
It also, of course, refracts light into all the colors of the rainbow.
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In science:

It is clear from Eqs. (2a) and (2b) that rk can be obtained from r⊥ by exchanging the refractive indices.
Constructing Fresnel reflection coefficients by ruler and compass
Parmigiani, “Some aspects of the reflection and refraction of an electromagnetic wave at an absorbing surface,” Am. J.
Constructing Fresnel reflection coefficients by ruler and compass
Lodenquai, “Electromagnetic wave propagation in media with complex refractive indices and transmission through absorbing films,” Am. J.
Constructing Fresnel reflection coefficients by ruler and compass
Doyle, “Graphical approach to Fresnel’s equations for reflection and refraction of light,” Am. J.
Constructing Fresnel reflection coefficients by ruler and compass
Several values of the refraction index were investigated because of their suitability for the intermediate and high momentum range of particle identification.
Experimental study of a proximity focusing Cherenkov counter prototype for the AMS experiment
The numbers are calculated taking into account the Cherenkov spectral distribution and PMT overall quantum efficiency. < n > is the mean refractive index of the material used as radiator, βc (Pth ) is the Cherenkov velocity (momentum) threshold.
Experimental study of a proximity focusing Cherenkov counter prototype for the AMS experiment
The mean refraction index calculated taking into account the Cherenkov light energy distribution and the quantum efficiency of the PMT photocathode is < n >= 1.332.
Experimental study of a proximity focusing Cherenkov counter prototype for the AMS experiment
This type of radiator allows to fill part of the gap in the range of usable refraction index between gas and solid radiators.
Experimental study of a proximity focusing Cherenkov counter prototype for the AMS experiment
AGLs however are currently the only available material to cover certain range of refraction index and then of particle velocity (see for details).
Experimental study of a proximity focusing Cherenkov counter prototype for the AMS experiment
The results on the velocity resolution and the experimental photoelectron yield for AGLs are summarized in table 2, where it is seen that the velocity resolution globally improves with the decreasing refraction index (and correlated chromatic dispersion), as it can be expected from general considerations [4, 8].
Experimental study of a proximity focusing Cherenkov counter prototype for the AMS experiment
On this basis, the AGL θc angles were calculated taking into account the refraction in the NaF tile.
Experimental study of a proximity focusing Cherenkov counter prototype for the AMS experiment
Table 5: Comparison of the experimental CR results with simulation. hni is the mean refraction index of the radiator, d the radiator thickness, D the drift distance, and ( δβ β ) the velocity resolution from the simulation (sim) and measured at β ∼ 1 (exp), Npix being the number of fired pixels after cuts.
Experimental study of a proximity focusing Cherenkov counter prototype for the AMS experiment
In this relation, n is the refractive index of the material, N the number density of particles in the medium, and α(λ) the dipole polarizability of the molecules of the medium, i.e., their response function to electromagnetic driving forces.
Experimental study of a proximity focusing Cherenkov counter prototype for the AMS experiment
Although the quality factor can be somewhat different however for different values of n, this effect is small for refractive index not too much different, like between 1.02 and 1.1 in silica aerogels.
Experimental study of a proximity focusing Cherenkov counter prototype for the AMS experiment
They determine the index of refraction n of the ”photon medium” in laser bunches.
Cherenkov radiation and pair production by particles traversing laser beams
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