Astronomer sentence example
Sir William Herschel was the first astronomer who measured position angles; the instrument he employed is described in Phil.
Astronomer comes from the Latin word astra, which means stars; and astronomers are men who study the stars, and tell us about them.
By the end of 1771 his scientific reputation was such that he was suggested for the post of "astronomer" to Captain Cook's second expedition to the South Seas, but his unorthodox opinions were objectionable to certain members of the board of longitude and the appointment was not ratified.
He became Astronomer Royal in Cape Colony in 1879 and retained that post till 1902.
See David Gill, Man and Astronomer, by George Forbes (1916).Advertisement
The first volume (in two parts) is a detailed biography of the great astronomer; the second includes some of his minor writings and correspondence, family records, and historical documents of local interest.
Gabir ben Aflah of Sevilla, commonly called Geber, was a celebrated astronomer and apparently skilled in algebra, for it has been supposed that the word " algebra " is compounded from his name.
When her brother accepted the office of astronomer to George III., she became his constant assistant in his observations, and also executed the laborious calculations which were connected with them.
Leonardo certainly was in relation with some persons belonging to that circle when he published in 1220 another more extensive work, De practica geometriae, which he dedicated to the imperial astronomer Dominicus Hispanus.
Ganessa, an eminent astronomer, mathematician and scholiast of Bhaskara, quotes this work and makes separate mention of the cuttaca (" pulveriser "), a device for effecting the solution of indeterminate equations.Advertisement
At nineteen he was appointed astronomer royal of Berlin.
In the beginning of May 1852, when the government of Louis Napoleon required an oath of allegiance from all its functionaries, Arago peremptorily refused, and sent in his resignation of his post as astronomer at the Bureau des Longitudes.
King, chief astronomer of the Dominion, was established in 1909.
The astronomer specialized in studying themagnitudeof stars are classifying their brightness.
He was the son of Pheidias, an astronomer, and was on intimate terms with, if not related to, Hiero, king of Syracuse, and Gelo his son.Advertisement
Thus a comet may be encountered in the morning dawn or evening twilight, and without such an adjunct the astronomer may lose the whole available opportunity for observation in the vain endeavour to find a suitable comparison-star.
What is thus shown to be possible would, of course, be necessary if we went on, with the astronomer Kepler, to identify the star of the Magi with the conjunction of the planets Jupiter and Saturn which occurred, in the constellation Pisces, in May, October and December of 7 B.C.'
It was endowed by Dr Francis Andrews, provost of Trinity College, was erected in 1785, and in 1791 was placed by statute under the management of the royal astronomer of Ireland, whose official residence is here.
From 1847 to 1862 he was advising astronomer to the headquarters of the army and navy; chairman of the International Astronomical Congress from 1867-1878; acting president of the International Metric Commission in 1872; and president of the International Congress for a Photographic Survey of the Stars in 1887, in which year he was also made a privy councillor.
Payments of arrears, now amounting to upwards of 4000 florins, was not, however, in the desperate condition of the imperial finances, to be hoped for; and he was glad, while retaining his position as court astronomer, to accept (in 1612) the office of mathematician to the states of Upper Austria.Advertisement
Encke, the astronomer who first investigated its orbit and showed its periodicity.
An inquirer who examines the stars with a shilling telescope is not likely to make observations of value, and even a trained astronomer has to allow for his "personal equation" - a point to which even a finished critic rarely attends.
Invited Regiomontanus, The Most Celebrated Astronomer Of The Age, To Rome, To Superintend The Reconstruction Of The Calendar.
Academies vied with each other in enrolling Leverrier among their members; the Royal Society awarded him the Copley medal; the king of Denmark sent him the order of the Dannebrog; he was named officer in the Legion of Honour, and preceptor to the comte de Paris; a chair of astronomy was created for his benefit at the Faculty of Sciences; he was appointed adjunct astronomer to the Bureau of Longitudes.
He acknowledged the genius of the astronomer, and had not approved of the action of the Inquisition in 1616; but subsequently, believing himself to have been caricatured in the Dialogo, he permitted the Inquisition to have its way and to compel an abjuration (1633).Advertisement
These services were recognized by the award of the Royal Astronomical Society's gold medal in 1869, and on the resignation of Sir Thomas Maclear in 1870 he was appointed Her Majesty's astronomer at the Cape.
An autobiography, Reminiscences of an Astronomer, appeared in 2903; and a bibliography of his writings is given by Mr Archibald in the Trans.
The hair having by some unknown means disappeared, Conon of Samos, the mathematician and astronomer, explained the phenomenon in courtly phrase, by saying that it had been carried to the heavens and placed among the stars.
In the interior of the church the tomb of the astronomer Tycho Brahe is notable, as is thevery ancient pulpit from which the Hussite archbishop John of Rokycan preached.
As early as 1839 a scheme of public schools, drawn up by Sir John Herschel, the astronomer, came into operation, and was continued until 1865, when a more comprehensive scheme was adopted.Advertisement
It is under the control of a royal astronomer and its expenses are defrayed by the British admiralty.
The change from slave to free labour proved to be advantageous to the farmers in the western provinces; an efficient educational system, which owed its initiation to Sir John Herschel, the astronomer (who lived in Cape Colony from 1834 to 1838), was adopted; Road Boards were established and did much good work; to the staple industries - the growing of wheat, the rearing of cattle and the making of wine - was added sheepraising; and by 1846 wool became the most valuable export from the country.
Having detected an important defect in one of Laplace's demonstrations, he was induced by a friend to write out his remarks, that they might be shown to Dr John Brinkley (1763-1835), afterwards bishop of Cloyne, but who was then the first royal astronomer for Ireland, and an accomplished mathematician.
He was not specially fitted for the post, for although he had a profound acquaintance with theoretical astronomy, he had paid but little attention to the regular work of the practical astronomer.
His early observations were made at the rectory of Wanstead in Essex, under the tutelage of his uncle, the Rev. James Pound (1669-1724), himself a skilled astronomer, and he was elected a fellow of the Royal Society on the 6th of November 1718.Advertisement
He had meantime (in 1742) been appointed to succeed Edmund Halley as astronomer royal; his enhanced reputation enabled him to apply successfully for an instrumental outfit at a cost of 1000; and with an 8-foot quadrant completed for him in 1750 by John Bird (1709-1776), he accumulated at Greenwich in ten years materials of inestimable value for the reform of astronomy.
On the death of Lord Rosse two years later he became professor of mathematics in Dublin University and in 1874 Royal Astronomer of Ireland.
Eusebius accepted the small bishopric of Emesa (the modern Horns) in Phoenicia, but his powers as mathematician and astronomer led his flock to accuse him of practising sorcery, and he had to flee to Laodicea.
At Paris he met men of science and letters - Peter Guenellon, the well-known Amsterdam physician; Ole Romer, the Danish astronomer; Thoynard, the critic; Melchisedech Thevenot, the traveller; Henri Justel, the jurist; and Francois Bernier, the expositor of Gassendi.
In a certain sense we may say that the universe now presents itself to the thinking astronomer, not as a heterogeneous collection of bodies, but as a unified whole.Advertisement
When an astronomer has made an observation, it still has to be " reduced," and this commonly requires more labour than that involved in making it.
But even this labour may be small compared with that of the theoretical astronomer, who, in the future, is to use the result as the raw material of his work.
Theoretical Astronomy is that branch of the science which, making use of the results of astronomical observations as they are supplied by the practical astronomer, investigates the motions of the heavenly bodies.
The problem of determining the perturbations of the (2) Q heavenly bodies is perhaps the most complicated with which the mathematical astronomer has to grapple; and the forms under which it has to be studied are so numerous that they cannot be easily arranged under any one head.
Having effected this reduction, and computed the correction to be applied to the observation in order to eliminate all known errors to which the instrument is liable, the work of the practical astronomer is completed.Advertisement
Edmund Halley, the second astronomer royal, devoted most of his official attention to the moon.
The fourth astronomer royal, Nathaniel Bliss, provided in two years a sequel of Bliss.
More immediately efficacious was the innovation made by John Pond (astronomer royal, 1811-1836) of substituting entire circles for quadrants.
Although Tycho Brahe was an original discoverer of this inequality, through whom it became known, Joseph Bertrand of Paris claimed the discovery for Abu 'l-Wefa, an Arabian astronomer, and made it appear that the latter really detected inequalities in the moon's motion which we now know to have been the variation.
This latter problem received the attention of the Arabian astronomer Abul Wefa (loth century A.D.), who solved it with a single opening of the compasses.Advertisement
This task Castelli, who was a steady friend and disciple of the Tuscan astronomer, seems to have discharged with moderation and success.
At the end of that time he appeared in public with his Saggiatore, a polemical treatise written in reply to the Libra astronomica of Padre Grassi (under the pseudonym of Lotario Sarsi), the Jesuit astronomer of the Collegio Romano.
The pope admitted him to six long audiences in the course of two months, wrote an enthusiastic letter to the grand-duke praising the great astronomer, not only for his distinguished learning, but also for his exemplary piety, and granted a pension to his son Vincenzio, which was afterwards transferred to himself, and paid, with some irregularities, to the end of his life.
That he had carefully studied the comet of 1577 as an astronomer, we may gather from his adducing the very small parallax of this comet as disproving the assertion of the Aristotelians that a solid sphere enveloped the heavens.
If an astronomer is confronted by some phenomenon which has no obvious explanation he may postulate some set of conditions which from his general knowledge of the subject would or might give rise to the phenomenon in question; he then tests his hypothesis until he discovers whether it does or does not conflict with the facts.
Further support is given to the view that, in the main, the constellations were transmitted to the Greeks by the Phoenicians from Euphratean sources in the fact that Thales, the earliest Greek astronomer of any note, was of Phoenician descent.
In the 5th century B.C. the Athenian astronomer Euctemon, according to Geminus of Rhodes, compiled a weather calendar in which Aquarius, Aquila, Canis major, Corona, Cygnus, Delphinus, Lyra, Orion, Pegasus, Sagitta and the asterisms Hyades and Pleiades are mentioned, always, however, in re Corvus.
Aratus was no astronomer, while Hipparchus was; and from the fact that the latter adopted, with but trifling exceptions, the constellation system portrayed by Aratus, it may be concluded that the system was already familiar in Greek thought.
And three hundred years after Hipparchus, the Alexandrian astronomer Ptolemy adopted a very similar scheme in his uranometria, which appears in the seventh and eighth books of his Almagest, the catalogue being styled the "EKOfois Kavovud7 or " accepted version."
The reverence and authority which was accorded the famous compilation of the Alexandrian astronomer is well evidenced by the catalogue of the Tatar Ulugh Beg, the Arabian names thane adopted being equivalent to the Ptolemaic names in nearly every case; this is also shown in the Latin translations given below.
In1835-1836he was actively engaged in producing for publication a treatise on navigation, a remarkable achievement at so early a stage in his career; he was at this time made lieutenant, and gazetted astronomer to a South Sea exploring expedition, but resigned this position and was appointed to the survey of southern harbours.
Returning in 1869, he was appointed assistant astronomer at Altona in 1873, and afterwards at Kiel.
These web pages are one example; another is forthcoming The Astronomer's Diary, our first almanac on CD-ROM.
Astronomer's asteroid Dr. Ann Gower, former Fellow of New Hall, has been honored by having an asteroid named after her.
Dee noticed it, as did the Danish astronomer Tycho Brahe, an admirer of Dee's.
Winning cat chosen by eminent astronomer, Sir Patrick Moore CBE FRS.
Sir Martin Rees, Astronomer Royal People focus on small risks, like wearing goggles when playing conkers, but ignore the big ones.
Nevil Maskelyne, afterward astronomer royal, became curate of Barnet in 1755.
The constellation is made of faint stars and has very little to offer the amateur astronomer.
For the budding astronomer, bedding with stars and planets is a natural choice.
Lenses that could correct astigmatism were developed by a British astronomer, George Airy.
Having founded an observatory there, he returned to Paris in 1747, was appointed geographical astronomer to the naval department with a salary of 3000 livres, and installed an observatory in the Hotel Cluny.
A variant of the same story was known to Guido Bonati, an astronomer quoted by Dante, who calls his hero or villain Butta Deus because he struck Jesus.
Of course this would be true had Thule been situated under the Arctic Circle, which Pytheas evidently considered it to be, and his skill as an astronomer would lead him to accept as a fact what he knew must be true at some point as a voyager proceeded onwards.
Pytheas certainly had one merit which distinguished him from almost all his contemporaries - he was a good astronomer, and was one of the first who made observations for the determination of latitudes, among others that of his native place Massilia, which he fixed with remarkable accuracy; his result, which was within a few miles of the truth, was adopted by Ptolemy, and became the basis of the Ptolemaic map of the western Mediterranean.
In 1808 he became astronomer to the Bureau des Longitudes; and when the Faculte des Sciences was instituted in 1809 he was appointed professeur de la mecanique rationelle.
Six months later, the indefatigable astronomer started for Danzig to set at rest a dispute of long standing between Hooke and Hevelius as to the respective merits of plain or telescopic sights; and towards the end of 1680 he proceeded on a continental tour.
The reflecting telescope became the only available tool of the astronomer when great light grasp was requisite, as the difficulty of procuring disks of glass (especially of flint glass) of suitable purity and homogeneity limited the dimensions of the achromatic telescope.
Partly for these reasons the reflecting telescope with metallic mirror has never been a favourite with the professional astronomer, and has found little employment out of England.'
Both are abundantly illustrated in most popular works on astronomy, and it seems sufficient to refer the reader to the original descriptions.2 We pass, therefore, directly to the equatorial telescope, the instrument par excellence of the modern extra-meridian astronomer.
These platforms are capable of easy motion so that the astronomer may be conveniently situated for observing an object at any azimuth or altitude to which the telescope may be directed.
The large differences between these results, derived from the same material, depend mainly on the different systematic corrections applied by each astronomer to the declinations of Bradley.
In the intervals of these immense labours, on which his reputation as an astronomer rests, he found leisure for works of a lighter character, e.g.
The Astronomer Royal, Sir Frank Dyson, unveiled the memorial, slightly later than planned, in February 1927.
In 1823 he was appointed astronomer of the Armagh observatory, with which he (from 1824) combined the living of Carrickmacross, but he always resided at the observatory, engaged in researches connected with astronomy and physics, until his death on the 28th of February 1882.
The formidable undertaking of reducing the accumulated planetary observations made at Greenwich from 1750 to 1830 was already in progress under Airy's supervision when he became Astronomer Royal.
When a new celestial body, say a planet or a comet is discovered, the astronomer meets with the problem of determining the orbit from several observed positions of the body.
Airy, the astronomer, about 1827, corrected his own astigmatism by means of a cylindrical lens.
In 1636 he met with a congenial spirit in William Crabtree, a draper of Broughton, near Manchester; and encouraged by his advice he exchanged the guidance of Philipp von Lansberg, a pretentious but inaccurate Belgian astronomer, for that of Kepler.
There can be no question that she loved her adopted country sincerely, and had an affection for her people, and an opinion of their great qualities which she did not hesitate to express in hyperbolical terms. Her zeal for the reputation of the Russians was almost comically shown by the immense trouble she took to compile an answer to the Voyage en Siberie of the French astronomer Chappe d'Auteroche.
But his chief pleasures were derived from what the astronomer of his Abyssinian tale called "the endearing elegance of female friendship."
Across the river is the "mountain," or hill, whence a fine view is obtained of the town and surroundings, and hard by the FuchsTurm (Fox tower) celebrated for student orgies, while in the centre of the town is the house of an astronomer, Weigel, with a deep shaft through which the stars can be seen in the day time.
But we have to picture him as anon coming out and gathering about him a tatterdemalion company, and jesting with them until they were in fits of laughter, for the sake of observing their burlesque physiognomies; anon as eagerly frequenting the society of men of science and learning of an older generation like the mathematician Benedetto Aritmetico, the physician, geographer and astronomer Paolo Toscanelli, the famous Greek Aristotelian Giovanni Argiropoulo; or as out-rivalling all the youth of the city now by charm of recitation, now by skill in music and now by feats of strength and horsemanship; or as stopping to buy caged birds in the market that he might set them free and watch them rejoicing in their flight; or again as standing radiant in his rose-coloured cloak and his rich gold hair among the throng of young and old on the piazza, and holding them spellbound while he expatiated on the great projects in art and mechanics that were teeming in his mind.
The astronomer specialized in studying the magnitude of stars and classifying their brightness.
The chief authority for the bishop's life is William de Chambre (printed in Wharton's Anglia Sacra, 1691, and in Historiae Dunelmensis scriptores tres, Surtees Soc. 1839), who describes him as an amiable and excellent man, charitable in his diocese, and the liberal patron of many learned men, among these being Thomas Bradwardine, afterwards archbishop of Canterbury, Richard Fitzralph, afterwards archbishop of Armagh, the enemy of the mendicant orders, Walter Burley, who translated Aristotle, John Mauduit the astronomer, Robert Holkot and Richard de Kilvington.
His father, the Rev. Francis Wollaston (1731-1815), rector of Chislehurst, grandson of the William Wollaston noticed above, was an enthusiastic astronomer.
On a hill west of the town are the remains of a famous observatory (rasad) constructed under the direction of the great astronomer Nasr-uddin of Tus.
Little card-holders (81) (also illuminated) enable the astronomer to enter beforehand the R.A.
Louis Charles d'Albert (1620-1690), duke of Luynes, son of the constable, was an ascetic writer and friend of the Jansenists; Paul d'Albert de Luynes (1703-1788), cardinal and archbishop of Sens, an astronomer; Michel Ferdinand d'Albert d'Ailly (1714-1769), duke of Chaulnes, a writer on mathematical instruments, and his son Marie Joseph Louis (1741-1793), a chemist; and Honore Theodore Paul Joseph (1802-1867), duke of Luynes, a writer on archaeology.
It is the birthplace of Sir William Herschel, the astronomer, of the brothers Schlegel, of Ifliand and of the historian Pertz.
Data of this kind, which are by other means inaccessible to the astronomer, are obviously indispensable to any adequate conception of the stellar system as a whole or in its parts.
In 1821 he went to New South Wales as astronomer at the observatory built at Parramatta by Sir Thomas Brisbane.
His SOH, George Friedrich Wilhelm (1832-1900), born on the 31st of December 1832, at Hamburg, was astronomer at the observatory at Durham, England, from 1853 to 1856.
A solution by means of the parabola and hyperbola was given by Dionysodorus of Amisus (c. 1st century B.c), and a similar problem - to construct a segment equal in volume to a given segment, and in surface to another segment - was solved by the Arabian mathematician and astronomer, Al Kuhi.
These, however, soon ceased to be observed, and already in the 1 ith century, alBiruni could meet with no Hindu astronomer capable of pointing out to him the complete series.
Her father, William Mitchell (1791-1869), .was a school teacher and self-taught astronomer, who rated chronometers for Nantucket whalers, was an overseer of Harvard University (1857-1865), and for a time was employed by the United States Coast Survey.
Among the scientific celebrities were de Saussure, the most many-sided of all; de Candolle and Boissier, the botanists; Alphonse Favre and Necker, the geologists; Marignac, the chemist; Deluc, the physicist, and Plantamour, the astronomer.
The Author Of The System Adopted By Gregory Was Aloysius Lilius, Or Luigi Lilioghiraldi, A Learned Astronomer And Physician Of Naples, Who Died, However, Before Its Introduction; But The Individual Who Most Contributed To Give The Ecclesiastical Calendar Its Present Form, And Who Was Charged With All The Calculations Necessary For Its Verification, Was Clavius, By Whom It Was Completely Developed And Explained In A Great Folio Treatise Of 800 Pages, Published In 1603, The Title Of Which Is Given At The End Of This Article.
This procedure - which was first employed by the great Greek astronomer Hipparchus (2nd century B.C.), and developed by Ptolemy three centuries later - did not afford any law connecting the motions of different bodies.
Eudoxus, the astronomer, Ctesias, the writer on Persian history, and Sostratus, the builder of the celebrated Pharos at Alexandria, are the most remarkable of the Cnidians mentioned in history.
His doctor's dissertation, De computandis occultationibus fixarum per planetas (Leipzig, 1815), established his reputation as a theoretical astronomer.
In the middle of this slide a stiffly fitting brass disk is inserted, to which a small turn-table motion may be communicated by an attached arm, acted on by two fine opposing screws accessible to the astronomer; and by their means the " fixed web " may be rendered strictly parallel with the movable one.
His career as a professional astronomer began in 1870, when he was elected Savilian professor of astronomy at Oxford.
Meanwhile, on the 31st of May 1792 he married Mademoiselle Lemonnier, daughter of the astronomer of that name, a young and beautiful girl, whose devotion ignored disparity of years, and formed the one tie with life which Lagrange found it hard to break.
The fame of this astronomer and mathematician rests on his work, the Aryabhattiyam, the third chapter of which is devoted to mathematics.
His travels had begotten in him a love of geography, and he published in 1633 a "Kosmografi," previously revised by the astronomer Longomontanus.
As an astronomer, Rittenhouse's principal merit is that he introduced in 1786 the use of spider lines in the focus of a transit instrument.
Elliptic orbits, and a parabolic orbit considered as the special case when the eccentricity of the ellipse is 1, are almost the only ones the astronomer has to consider, and our attention will therefore be confined to them in the present article.
Hipparchus, the famous astronomer, on the other hand, (c. 150 B.C.) proved a somewhat captious critic. He justly objected to the arbitrary network of the map of Eratosthenes.
As the powers of the telescope were gradually developed, it was found that the finest hairs or filaments of silk, or the thinnest silver wires that could be drawn, were much too thick for the refined purposes of the astronomer, as p p they entirely obliterated the image of a star in the more powerful telescopes.
Edmund Halley, the astronomer, compiled the first variation chart of scientific value (1683), as also a chart of the winds (1686).
In 1881 Sir George Airy resigned the office of Astronomer Royal and resided at the White House, Greenwich, not far from the Royal Observatory, until his death, which took place on the 2nd of January 1892.
In June 1835 Airy was appointed Astronomer Royal in succession to John Pond, and thus commenced that long career of wisely directed and vigorously sustained industry at the national observatory which, even more perhaps than his investigations in abstract science or theoretical astronomy, constitutes his chief title to fame.
Airy, the astronomer, corrected his own astigmatism by means of a cylindrical lens.
Even before this, however, he had shown a strong inclination for natural science, and this had been fostered by his intimacy with a "self-taught philosopher, astronomer and mathematician," as Sir Walter Scott called him, of great local fame - James Veitch of Inchbonny, who was particularly skilful in making telescopes.
Further state aid enabled him to visit Germany and France in 1825, and having visited the astronomer Heinrich Schumacher (1780-1850) at Hamburg, he spent six months in Berlin, where he became intimate with August Leopold Crelle, who was then about to publish his mathematical journal.
Tobit ben Korra (836-901), born at Harran in Mesopotamia, an accomplished linguist, mathematician and astronomer, rendered conspicuous service by his translations of various Greek authors.