light source

Definitions

  • WordNet 3.6
    • n light source any device serving as a source of illumination "he stopped the car and turned off the lights"
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Quotations

  • Brigham Young
    Brigham%20Young
    “There is no knowledge, no light, no wisdom that you are in possession of, but what you have received it from some source.”
  • Peace Pilgrim
    Peace%20Pilgrim
    “For light I go directly to the Source of light, not to any of the reflections.”

Usage

In literature:

Then his eye encountered the source of that curious amber light which pervaded the whole valley.
"Astounding Stories, February, 1931" by Various
There was from some source sufficient light around me.
"Old French Fairy Tales" by Comtesse de Ségur
Inside the car was light, a diffused radiance from no apparent source, the whole air was glowing about them.
"Astounding Stories of Super-Science, December 1930" by Various
From this one source, all the fires and lights in the district are kindled anew.
"Threads of Grey and Gold" by Myrtle Reed
Your aim, obviously, is to impress on them the importance of moral energy, which is the source of all light.
"The Forerunners" by Romain Rolland
The next question was the light source casting the shadow-apex.
"Master of the Moondog" by Stanley Mullen
The prisoned seed, buried in the dank and quickening soil, struggles instinctively toward the source of light and strength.
"Blue Goose" by Frank Lewis Nason
In the first place, we have very little light thrown on the history of St. Gregory by the sources of the seventh century.
"St. Gregory and the Gregorian Music" by E. G. P. Wyatt
This source is moving at such incredible velocity that it is very close to the speed of light.
"The Egyptian Cat Mystery" by Harold Leland Goodwin
This makes it a powerful source of light.
"Encyclopaedia Britannica, 11th Edition, Volume 6, Slice 8" by Various
In its place was the light that comes from but one source.
"The Vision of Elijah Berl" by Frank Lewis Nason
He turned off the infrared light, and, leaving a trail of torn cloth behind him, he crawled toward the source of the light.
"The Caves of Fear" by John Blaine
JESUS THE SOURCE OF SPIRITUAL LIGHT AND WARMTH.
"With the Children on Sunday" by Sylvanus Stall
The light seemed stronger, drawing them toward its source.
"Queen of the Flaming Diamond" by Leroy Yerxa
He caught eight more, then the next hesitated, looking around for the source of light.
"The Giants From Outer Space" by Geoff St. Reynard
Inquiry through the ordinary sources of information failed to throw any light on the matter.
"The Crime of the Century" by Henry M. Hunt
Beyond it was a faint and fitful light that led him onward toward its source.
"Day of the Druid" by Knut Enferd
No light entered the building from any source.
"Shock Treatment" by Stanley Mullen
Around a bend, the source of the greenish light was apparent.
"Astounding Stories, August, 1931" by Various
For this purpose it is necessary to place it between the source of light and the eye.
"Encyclopaedia Britannica, 11th Edition, Volume 5, Slice 3" by Various
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In poetry:

Source of all truth, and love, and light,
That warm and cheer our earthly days,
Be ours to serve Thy will aright,
Be Thine the glory and the praise!
"Hymn Read At The Dedication Of The Oliver Wendell Holmes Hospital At Hudson, Wisconsin" by Oliver Wendell Holmes
THOU God of mercy! Source of light and day!
Giver of grace, and ev'ry useful boon!
For Jesus' sake, O, hear us, when we pray,
And grant thy people their petitions soon.
"A Prayer For Them, Who Go To Worship God In Public" by Rees Prichard
"A light to sky and earth unknown
Pales all their lights: a mightier force
Than theirs the powers of Nature own,
And, to its goal as at its source,
His Spirit moves the Universe.
"Revelation" by John Greenleaf Whittier
Shou'd Satan tempt thee, in the gloom of night,
The secret works of darkness to transact —
Tell him, that God, who is the source of light,
With his all-seeing eyes surveys each fact.
"Advice, To Guard Against The Temptations Of The Devil " by Rees Prichard
Father! Source of light and love!
Thou, whose throne of majesty,
Fix'd yon thousand suns above,
Gladdens all the earth with joy:
Mercy-streaming, promise-beaming,
Let Thy praise my soul employ.
"Autumn: Friday Evening" by John Bowring
Stupendous source of life and light!
As in thy warmth my pulses thrill,
Before thy glory and thy might
I feel myself a Pagan still,
And in my spirit's inmost shrine
I half adore thee as divine.
"Post Nubes Lux" by John Lawson Stoddard

In news:

A spectrometer takes light from some source and splits it into its different wavelengths.
Heat, however, complicates the light's power source, because high-temperature power wiring is difficult to install and not really flexible.
These LED light sources have been around for 20 years in very low power forms, which were not suitable, or bright enough, for inspection and task lighting.
The Web site invites educated visitors to submit improvements to the basic Light Sport Aircraft open-source design, MakerPlane Version 1.0, introduced last year.
Both focus on light as a source of inspiration for works of art and architecture.
One organization plans to ramp up production of a new light source, while a new startup seeks to work on new drugs that could help people suffering from Parkinson's Disease and addictions.
Apple has responded to complaints that some photos taken with the iPhone 5 show a purple flare , saying it happens to many smartphones when they're aimed near a light source like the sun.
Find out about Graveyard 's Lights Out from the online music source Billboard.com.
In need of new lighting and sound equipment, Pear Theatre officials have tapped into the popular trend of crowd-sourcing capital.
It's also changing more than 1 million light sources in its stores to LED and other forms of highly efficient lighting , the report said.
Light Source Suited for NIR Analysis of Pharmaceuticals .
They make nice light sources while camping.
Today we are going to learn about a totally new approach to lighting controls that take full advantage of LEDs - a clean, green and efficient light source that is gaining traction quickly.
Gear Source Inc has created Rental Source LLC, a fresh new concept providing production rental referrals for lighting, sound, staging and video gear on a global level.
Our expert, Randall Whitehead, IALD, explains how your walls can offset your light source.
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In science:

An amplitude spectrum obtained from this reference light source is shown in Fig. 3.
LED Monitoring System for the BTeV Lead Tungstate Crystal Calorimeter Prototype
In addition, the LED’s were connected to two PIN photodiodes and a PMT with calibrated light source placed on its window, to provide reference signals.
LED Monitoring System for the BTeV Lead Tungstate Crystal Calorimeter Prototype
Kachanov et al., Light source for energy stabilization of calorimeter detectors based on photodetectors, Nucl.
LED Monitoring System for the BTeV Lead Tungstate Crystal Calorimeter Prototype
The amount of aerosil in each sample was quantified by the parameter ρS , the mass of aerosil divided by the volume of liquid crystal. X-ray diffraction experiments were carried out at the National Synchrotron Light Source at Brookhaven National Laboratory.
First order isotropic - smectic-A transition in liquid crystal-aerosil gels
It consists of a light source at the origin on a wall and a rotating mirror whose axis of rotation is at a unit distance from the wall.
The linear Ising model and its analytic continuation, random walk
FIG. 2: Sketch of PhRG with a coherent light source.
Noise Secured Internet
While the most papers on light propagation consider both a light source and an observer as being located at infinity we do not need these assumptions.
General Relativistic Theory of Light Propagation in the Field of Radiative Gravitational Multipoles
Here P = (P1 , P2 , P3 ) is the polarization vector as defined at the end of the preceding section, and Fω is the specific flux of radiation (also known as the monochromatic flux of a light source [106]) entering a telescope from a given source.
General Relativistic Theory of Light Propagation in the Field of Radiative Gravitational Multipoles
In this section we shall assume for simplicity that mass M and spin S i of the isolated system are constant during the time of propagation of light from the source of light to observer.
General Relativistic Theory of Light Propagation in the Field of Radiative Gravitational Multipoles
For light sources at the edge of our visible universe the characteristic time for emission of gravitational waves by an isolated system can be comparable with time the light takes to travel from the point of emission to observer.
General Relativistic Theory of Light Propagation in the Field of Radiative Gravitational Multipoles
In real practice the light ray is emitted at the point x0 where the source of light is located at time t0 , and it arrives to observer at time t to the point x separated from the source of light by finite coordinate distance R = |x − x0 |.
General Relativistic Theory of Light Propagation in the Field of Radiative Gravitational Multipoles
It is worth emphasizing that the observed direction si to the source of light includes relativistic deflection of the light ray in the form of three perturbations.
General Relativistic Theory of Light Propagation in the Field of Radiative Gravitational Multipoles
To evaluate the PSPMT spatial resolution, a deuterium light source is used to produce a constant number of photons in a wide wavelength range.
Experimental study of a liquid Xenon PET prototype module
If, in some case, randomness of a single LED source would be suspected, one could use several independently driven LED sources to enhance the randomness of the light source.
Quantum random number generator
Presented prototype consist of a light source, one single-photon detector and fast electronics for timing analysis of the detected photons providing random output numbers (bits) at 1Mbit/sec.
Quantum random number generator
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