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At and short
At the beginning of the school year, the new students don't eat the cereal right away, but within a short time they are eating it voraciously.
At this moment, Loveless and Means arrived, crashing through the undergrowth with their horses, and distracted her, and she ran off a short distance and jumped into a crevice between two rocks.
At the beginning of the Depression in 1929, with his aged parents ' health weakening, Smith resumed fiction writing and turned out more than a hundred short stories, nearly all of which can be classed as weird horror or science fiction.
At Esprit, Marker wrote political commentaries, poems, short stories and ( with Bazin ) film reviews.
At least, three short periods in the history of Chicago have had a lasting influence on American Literature.
At the near end of each short, Clark gives out a smile and a wink to the audience ( that was carried over the 1966 Superman animated series ).
At the August Bristol race, Earnhardt found himself in contention to win his first short track race since Martinsville in 1995.
At that time, numerous influences-including a growing awareness of the unity and fragility of the biosphere following mankind's first steps into outer space ( see, for example, the Blue Marble ), increased public concern over the impact of industrial activity on natural resources and human health ( see, for example, the 1969 Cuyahoga River fire, the increasing strength of the regulatory state, and more broadly the advent and success of environmentalism as a political movement-coalesced to produce a huge new body of law in a relatively short period of time.
At the time, King was directing the first such adaptation, Maximum Overdrive, based on his short story " Trucks ".
At UCLA, Coppola directed a short horror film called “ The Two Christophers ” inspired by Edgar Allan Poe's " William Wilson ".
At that point, the player who committed the foul sits in the penalty area, and his team is short handed for the time of the penalty.
At short distances, the exchange interaction is much stronger than the dipole-dipole magnetic interaction.
At this time, Victor Gollancz suggested Orwell spend a short time investigating social conditions in economically depressed northern England.
At the upper end of the Gallery on the right-hand side there is a hole near the roof which opens into a short tunnel by which access can be gained to the lowest of the Relieving Chambers.
At the end of this period, a commission is occasionally extended by a short period.
At the narrow outer edge of the cnidocyte is a short trigger hair called a cnidocil.
At the age of 39, Aaron hit 40 home runs in 392 at-bats, ending the season one home run short of the record.
At heights of above, in the thermosphere, the atmosphere is so thin that free electrons can exist for short periods of time before they are captured by a nearby positive ion.
At Columbia he began to write short " semi-narrative abstract pieces ", and edited the undergraduate literary journal The Columbia Review.
At the age of six years old she made her film debut in a minor role in Woody Allen's Oedipus Wrecks, a short film that was released as one-third of the anthology New York Stories ( 1989 ).
At the beginning of that reign Malesherbes during his short ministry endeavoured to infuse some measure of justice into the system, and in March 1784 the baron de Breteuil, a minister of the king's household, addressed a circular to the intendants and the lieutenant of police with a view to preventing the most serious abuses connected with the issue of lettres de cachet.
At a short distance from that city they unexpectedly encountered the Vitellian troops.
At the highest elevations is dwarf forest, a dense forest as short as, on saturated soils.
At the end of the year, he managed to get a short story published.
At other times the Premier's ministerial office is in the Executive Building a short distance down George Street.

At and wavelength
At the United States Naval Observatory, a radio receiver was lifted 3 kilometers above the ground in a dirigible tuned to a wavelength between 8 and 9 kilometers, using a " radio-camera " developed by Amherst College and Charles Francis Jenkins.
At wavelengths shorter than λ < sub > 0 </ sub >, M ( λ ) is negative and increases with wavelength ; at wavelengths longer than λ < sub > 0 </ sub >, M ( λ ) is positive and decreases with wavelength.
At the far side of the plate, the parallel wave is exactly half of a wavelength delayed relative to the perpendicular wave, and the resulting combination ( red ) is orthogonally polarized compared to its entrance state.
At values of the ratio of particle diameter to wavelength more than about 10, the laws of geometric optics are mostly sufficient to describe the interaction of light with the particle, and at this point the interaction is not usually described as scattering.
At a wavelength of 6 cm ( 5 GHz frequency ), MERLIN has a resolution of 50 milliarcseconds which is comparable to that of the HST at optical wavelengths.
At Bell Telephone Laboratories Jansky built an antenna designed to receive radio waves at a frequency of 20. 5 MHz ( wavelength about 14. 6 meters ).
At any specific wavelength, reflectivity = 1-emissivity.
At its resonant frequency, the wavelength ( figured by dividing the speed of light by the resonant frequency ) is slightly over twice the length of the half-wave dipole ( thus the name ).
At sunrise and sunset, when the path through the atmosphere is longer, the blue and green components are removed almost completely leaving the longer wavelength orange and red hues we see at those times.
At larger values of the ratio of particle diameter to wavelength, the scattering varies in a complex fashion described, for spherical particles, by the Mie theory ; at a ratio of the order of 10, the laws of geometric optics begin to apply.
At this point, if greater resolution is needed at that wavelength, a wider mirror has to be built or aperture synthesis performed using an array of nearby telescopes.
At extra low frequencies ( ELF ) and very low frequencies the wavelength is very much larger than the separation between the earth's surface and the D layer of the ionosphere, so electromagnetic waves may propagate in this region as a waveguide.
At a research reactor, other components are needed, including a crystal monochromators as well as filters to select the desired neutron wavelength.
At a spallation source, the time of flight technique is used to sort the energies of the incident neutrons ( higher energy neutrons are faster ), so no monochromator is needed, but rather a series of aperture elements synchronized to filter neutron pulses with the desired wavelength.
At the long wavelength end the cut-off is determined by the detector ; this loses sensitivity beyond ≈ 24 μm, although the cut-off for individual detectors varies significantly.
At around 70 eV, the de Broglie wavelength of the electrons matches the length of typical bonds in organic molecules ( about 0. 14 nm ) and energy transfer to organic analyte molecules is maximized, leading to the strongest possible ionization and fragmentation.
At higher energies, the de Broglie wavelength of the electrons becomes smaller than the bond lengths in typical analytes ; the molecules then become " transparent " to the electrons and ionization efficiency decreases.
At lower light levels, where only the rod cells function, the sensitivity is greatest at a blueish-green wavelength.
At detector 2, there is a phase difference of half a wavelength, yielding complete destructive interference.
At a wavelength of 6 cm ( 5 GHz frequency ), MERLIN has a resolution of 40 milliarcseconds which is comparable to that of the HST at optical wavelengths.
At a certain wavelength, the group velocity equals the phase velocity, and there is no dispersion.
At precisely this same wavelength, the phase velocity of gravity – capillary waves as a function of wavelength ( or wave number ) has a minimum.

0.388 seconds.