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This light is collected by the same objective and, because it is red-shifted with respect to the excitation light it passes the dichroic mirror reaching a detector, typically a photomultiplier tube or avalanche photodiode detector.
Some Related Sentences
light and is
The enormous changes in world politics have, however, thrown it into confusion, so much so that it is safe to say that all international law is now in need of reexamination and clarification in light of the social conditions of the present era.
The portrait that had developed, fragmentarily but consistently, was the portrait of a man to whom serious thinking is alien enough that the making of a decision inhibits, when it does not forestall, any ability to review the decision in the light of new evidence.
Ptolemy's problem is to forecast where, against the inverted bowl of night, some particular light will be found at future times.
The distances of these points of light is a problem he cannot master, beyond crude conjectures as to the orderings of the planetary orbits viewed outward from earth.
Trevelyan centers too exclusively on Bright, is insufficiently appreciative of the views of Bright's opponents and critics, and makes light of the genuine difficulties faced by Peel.
In light of the scholarly reappraisals engendered by the higher criticism this is a most remarkable statement, particularly coming from one who was well known for his antifundamentalist views.
Far from being irrelevant to the ecumenical task, the Pontiff believes that a revivified Church is required in order that the whole world may see Catholicism in the best possible light.
These cases in which light is already visible at the other end of the tunnel are ones which over the next few years will absorb the bulk of our capital assistance.
A flashlight or electric lantern also should be available for those periods when a brighter light is needed.
At that time consideration will be given to whether in the light of the United States supplies of rice available for Title 1, disposal, India's production, consumption and stocks of food grains, other imports from the United States and countries friendly to the United States, India's storage capacity, and other related factors, any increase would be possible in the portion of the total rice programmed which is currently planned for procurement during the first year.
Essentially, the question presented for decision in the present Daytime Skywave proceeding is whether our decision ( in 1938-1939 ) to assign stations on the basis of daytime conditions from sunrise to sunset, is sound as a basis for AM allocations, or whether, in the light of later developments and new understanding, skywave transmission is of such significance during the hours immediately before sunset and after sunrise that this condition should be taken into account, and some stations required to afford protection to other stations during these hours.
It is a flavor that might take a little getting used to -- not because it is unpleasant, but because the flavor is hard to define in the light of our experience with other fruits.
It is a simple task to haul a boat fifty or one hundred miles to a lake or reservoir on the new, light, strong, easy-to-operate trailers which are built to accommodate almost any kind of small boat and retail from $100 to $2,000.
The Deerstalker points with the ease, speed and precision of a fine imported double shotgun, and its trigger pull is light and sharp.
Just after sunset is a good time to record the city lights in color since you get a `` fill-in '' light from the sky.
light and collected
The Cassegrain telescope of the UVS had a 250 mm aperture and collected light from the observation target.
A 100 mm aperture reflecting telescope collected light and directed it to a series of filters, and, from there, measurements were performed by the detectors of the PPR.
The secondary electrons are first collected by attracting them towards an electrically biased grid at about + 400 V, and then further accelerated towards a phosphor or scintillator positively biased to about + 2, 000 V. The accelerated secondary electrons are now sufficiently energetic to cause the scintillator to emit flashes of light ( cathodoluminescence ), which are conducted to a photomultiplier outside the SEM column via a light pipe and a window in the wall of the specimen chamber.
Louis Pasteur could rightly be described as the first stereochemist, having observed in 1849 that salts of tartaric acid collected from wine production vessels could rotate plane polarized light, but that salts from other sources did not.
The highest individual light trap total for 2010 was from a trap located in a salt marsh in the Fire Island National Seashore: approximately 25, 142 mosquitoes were collected during a 16-hour period on August 31.
The group of Radek Wojtak of the Niels Bohr Institute at the University of Copenhagen collected data from 8000 galaxy clusters and found that the light coming from the cluster centers tended to be red-shifted compared to the cluster edges, confirming the energy loss due to gravity.
To this end, on 23 September 1965, he collected an informal group around him which he called ‘ Rakutenkai ’, which had as its aim to pursue truth in daily life, acquire perfect liberty, live within the light of liberty, and become the light of the world.
Wavelengths close to the laser line due to elastic Rayleigh scattering are filtered out while the rest of the collected light is dispersed onto a detector.
Reported events that he collected include teleportation ( a term Fort is generally credited with coining ); poltergeist events, falls of frogs, fishes, inorganic materials of an amazing range ; crop circles ; unaccountable noises and explosions ; spontaneous fires ; levitation ; ball lightning ( a term explicitly used by Fort ); unidentified flying objects ; mysterious appearances and disappearances ; giant wheels of light in the oceans ; and animals found outside their normal ranges ( see phantom cat ).
This area is equivalent to an circular aperture, which would be greater than any other single telescope, but it is not comparable in many respects since the light is collected at a lower diffraction limit and is not combined in the same way.
There was a third, important type of collector on Genesis: the concentrator, which collected bulk solar wind, but was discriminating in that it electrostatically repelled hydrogen and had enough voltage that it focused the light solar wind elements ( e. g., C, O, N, S ) onto a small target, concentrating those ions by a factor of ~ 20.
For example, ash collected from Hawaiian lava fountains consists of sideromelane ( light brown basaltic glass ) pyroclasts which contain rare microlites ( small quench crystals ) and phenocrysts.
As a writer of verse Bourget's poems, which were collected in two volumes ( 1885 – 1887 ), throw light upon his mature method and the later products of his art.
As more cosmological data began to be collected, cosmologists began to realize that the Big Bang correctly predicted the abundance of light elements observed in the cosmos.
As particles pass through the fringes, the Doppler-shifted light is collected into the photodetector.
Laser light from a solid state diode is reflected off the back of the cantilever and collected by a position sensitive detector ( PSD ) consisting of two closely spaced photodiodes whose output signal is collected by a differential amplifier.
Wharton was curious, and one morning when a light snow was falling, collected some from a field near his house, melted and evaporated it, studying the remaining particles under a microscope which he had on hand for metallurgy.
The collected light is then matched with a model, for example, the diffusion model, giving an optimization problem.
He once stood up and said against a certain collected assembly: " You may well have light and truth, but knowledge alone will benefit you nothing.