Using NASA's Spitzer infrared telescope the scientists spotted the molecules ' unmistakable infrared signature.

Using a coronagraph on the Subaru telescope in Hawaii in 2005, astronomers were able to further constrain the size of a planet orbiting Vega to no more than 5 – 10 times the mass of Jupiter.

Using short pulses of laser light beamed from a spacecraft, some of that " light reflects off of tiny particles in the atmosphere and back to a telescope aligned with the laser.

" Using a 50 power refracting telescope that he designed himself, Huygens also discovered the first of Saturn's moons, Titan.

Using his modern telescope he succeeded in subdividing the nebula into different stars.

Using newer and more powerful infrared telescope technology, able to detect brown dwarfs as cool as 150 kelvins out to a distance of 10 light-years from the Sun, preliminary results from the Wide-field Infrared Survey Explorer ( WISE survey ) have not, to date, detected Nemesis, although the analysis of the full survey is not yet complete.

Using astronomical observations obtained from the new telescope, Langley devised a precise time standard – including time zones – that became known as the Allegheny Time System.

Using glass blanks made by Chance Brothers of Birmingham and Feil-Mantois of Paris, his firm Alvan Clark & Sons ground lenses for refracting telescopes, including the largest in the world at the time: the at Dearborn Observatory at the Old University of Chicago ( the lens was originally intended for Ole Miss ), the two telescopes at the United States Naval Observatory and McCormick Observatory, the at Pulkovo Observatory ( destroyed in the Siege of Leningrad ; only the lens survives ), the telescope at Lick Observatory ( still third-largest ) and later the at Yerkes Observatory, which remains the largest successful refracting telescope in the world.

Using the Hale telescope, Schmidt found the same odd spectra, but was able to demonstrate that it could be explained as the spectrum of hydrogen, shifted by a very large 15. 8 .% If this was due to the physical motion of the " star ", it would represent a speed of 47, 000 km / s, far beyond the speed of any known star and defying an obvious explanation.

Using a telescope mounted 5km from one of the markers, Wallace established that the nearer one appeared to be the higher of the two.

Using a telescope equipped with a properly aligned equatorial mount, the observer may also follow the equatorial coordinate system on a star map to " hop " or " slide " along the lines of right ascension or declination from a well known object to find a target.

Using star hopping techniques an observer would first identify these two by the naked eye and then point an instrument ( binocular or telescope ) two thirds of the way up from ζ, one third down from η to site M 13.

Using a 60 cm telescope, he was very adept in creating planetary maps from visual observations.

Using the low-resolution spectrograph, the telescope has been used to identify Type Ia supernovae to measure the acceleration of the universe.

Using all these measurements, scientists try to model and predict the exact location of the telescope, and the delays through the atmosphere, so they can compensate for them.

Using a telescope with a aperture, the cluster has a bright core with a diameter of about 6 arcminutes and spans a total of 12 arcminutes.

Using this telescope he saw and catalogued a large number of galaxies.

Using a telescope with a aperture, the cluster shows an oval appearance with a core and a halo.

Using a telescope, he watches her every night performing mundane tasks, working on her artwork, and entertaining men.

) Using the telescope he spent almost 20 years taking spectrographic plates of vast areas of the night sky.

Using both a telescope and signal flags, two-way communication between ship and shore was possible several hours before an incoming vessel reached the docks.

Using the 305-m Arecibo radio telescope, a wide range of frequencies were scanned between 100 and 400 MHz.

Using a semiconductor telescope and conventional electronics to identify the < sup > 14 </ sup > C ions, the Rose and Jones's experiment was running for about six months in order to get 11 useful events.

Using uniformitarianism, which states that one cannot make an appeal to any force or phenomenon which cannot presently be observed ( see catastrophism ), Darwin theorized that the evolutionary process must occur gradually, not in saltations, since saltations are not presently observed, and extreme deviations from the usual phenotypic variation would be more likely to be selected against.

Using quantum theory Dirac showed that if magnetic monopoles exist, then one could explain the quantization of electric charge --- that is, why the observed elementary particles carry charges that are multiples of the charge of the electron.

Using vibration monitoring, it can be observed that each tap change operation generates a signal that contains information about the condition of the tap changer contacts and the drive mechanisms.

Using the justification that the Incas had " broken the inviolate law observed by all nations of the world regarding ambassadors " the new Viceroy, Francisco de Toledo, Count of Oropesa, decided to attack and conquer Vilcabamba.

Using his observations, Cavendish observed that, when he had determined the amounts of phlogisticated air ( nitrogen ) and dephlogisticated air ( oxygen ), there remained a volume of gas amounting to 1 / 120 of the original volume of common air.

Using Soviet-made tracking equipment and assisted by hired Soviet experts, a period of radio silence was observed, and it was hoped that any illegal transmissions could be identified.

Using VLBI in this manner requires large numbers of time difference measurements from distant sources ( such as quasars ) observed with a global network of antennas over a period of time.

Using that methodology, the government observed a steady population increase, reaching 3, 700 tigers in 2002.

Using the chi-squared distribution to interpret Pearson's chi-squared statistic requires one to assume that the discrete probability of observed binomial frequencies in the table can be approximated by the continuous chi-squared distribution.

Using night vision gear, ecologists observed the skuas preying on the petrels at night, a remarkable strategy for a seabird.

Using the Sunyaev – Zel ' dovich effect, dense clusters of galaxies have been observed.

# REDIRECT Hardware random number generator # Using observed events

Using the then-controversial kinetic theory of fluids, it established that the phenomenon, which still lacked a satisfactory explanation decades after it was first observed, provided empirical evidence for the reality of atoms.

Using an approach that combines history, ecology, and anthropology, a landscape's history can be observed and deduced through the traces of the various mechanisms that have altered it, anthropogenic or otherwise.

Using seismometers and earthquake location, the requisite pattern of micro-earthquakes can be observed.

Using the same analogy, a current sink would be like water flowing down a drain-water travels from where it is observed to where it is not observed.

Using electron microscopy the first carboxysomes were seen in 1956, in the cyanobacterium Phormidium uncinatum in the early 1960s similar polyhedral objects were observed in other cyanobacteria.

Using the matrix isolation technique, short-lived, highly-reactive species such as radical ions and reaction intermediates may be observed and identified by spectroscopic means.

Using relational aggression to maintain a particular social order inside the group has been mostly observed in girl groups: if some member of the group becomes too popular and this causes imbalance in the group, other members might start rumors about the overly popular girl to diminish her status.