REGIOMONTANUS (1436-1476), German astronomer, was born at Konigsberg in Franconia on the 6th of June 1436.
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.
EDUARD SCHONFELD (1828-1891), German astronomer, was born at Hildburghausen, in the duchy of Meiningen, on the 22nd of December 1828.
Astronomer comes from the Latin word astra, which means stars; and astronomers are men who study the stars, and tell us about them.
Sir William Herschel was the first astronomer who measured position angles; the instrument he employed is described in Phil.
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.
JOHANN HEINRICH LAMBERT (1728-1777), German physicist, mathematician and astronomer, was born at Mulhausen, Alsace, on the 26th of August 1728.
SAMUEL PIERPONT LANGLEY (1834-1906), American physicist and astronomer, was born at Roxbury, Boston, Massachusetts, on the 22nd of August 1834.
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.
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of the great astronomer; the second includes some of his minor writings and correspondence, family records, and historical documents of local interest.
He became Astronomer Royal in Cape Colony in 1879 and retained that post till 1902.
JOHN POND (c. 1767-1836), English astronomer-royal, was born about 1767 in London, where his father made a fortune in trade.
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.
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.
"SIR DAVID GILL (1843-1914), British astronomer, was born in Aberdeenshire June 12 18 4 3 and educated at the university of Aberdeen.
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.
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.
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.
JOHN BAINBRIDGE (1582-1643), English astronomer, was born at Ashby-de-la-Zouch, in Leicestershire.
See David Gill, Man and Astronomer, by George Forbes (1916).
CAROLINE LUCRETIA HERSCHEL (1750-1848), English astronomer, sister of Sir William Herschel, the eighth child and fourth daughter of her parents, was born at Hanover on the 16th of March 1750.
Edmund Halley, the astronomer, compiled the first variation chart of scientific value (1683), as also a chart of the winds (1686).
CHRISTIAAN HUYGENS (1629-1695), Dutch mathematician, mechanician, astronomer and physicist, was born at the Hague on the 14th of April 1629.
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.
He was elected a fellow of the Royal Society on the 26th of February 1807; he married and went to live in London in the same year, and in 1811 succeeded Maskelyne as astronomer-royal.
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.
SIR JOSEPH NORMAN LOCKYER (1836-), English astronomer, was born at Rugby on the 17th of May 1836.
JOSEPH NICOLAS DELISLE (1688-1768), French astronomer, was born at Paris on the 4th of April 1688.
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.
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.
PAOLO FRISI (1728-1784), Italian mathematician and astronomer, was born at Milan on the 13th of April 1728.
PIERRE JULES CESAR JANSSEN (1824-1907), French astronomer, was born in Paris on the 22nd of February 1824, and studied mathematics and physics at the faculty of sciences.
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.
CHARLES PRITCHARD (1808-1893), British astronomer, was born at Alberbury, Shropshire, on the 29th of February 1808.
Eastward of the present city, amongst the mounds and ruins of the old town, in a dilapidated chamber adjoining a bluedomed building over the grave of an imamzadeh, is the tomb of the astronomer-poet Omar Khayyam, an unsightly heap of plaster without inscription, and probably fictitious.
JOHANN FRANZ ENCKE (1791-1865), German astronomer, was born at Hamburg on the 23rd of September 1791.
De Lacerda, an accomplished astronomer, was appointed to command a scientific expedition of discovery to the north of the Zambesi.
About 1136), was a mathematician, astronomer and philosopher much studied in the middle ages.
After 1510), astronomer, wrote the Sephei Yuhasin, an historical work of importance.
Several previous attempts had been made to discover the law of force, with various results, some of which correctly indicated the inverse square; in particular the German astronomer, J.
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 Astronomer-Royal for Scotland also holds the chair of practical astronomy.
SAMUEL HEINRICH SCHWABE (1789-1875), German astronomer, was born on the 25th of October 1789 at Dessau, where he died on the 11th of April 1875.
AIRY, SIR GEORGE BIDDELL (1801-1892), British Astronomer Royal, was born at Alnwick on the 27th of July 1801.
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.
The fame of this astronomer and mathematician rests on his work, the Aryabhattiyam, the third chapter of which is devoted to mathematics.
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.
His travels had begotten in him a love of geography, and he published in 1633 a "Kosmografi," previously revised by the astronomer Longomontanus.
RHETICUS, or RHAETICUS (1514-1576), a surname given to GEORGE JOACHIM, German astronomer and mathematician, from his birth at Feldkirch in that part of Tirol which was anciently the territory of the Rhaeti.
Airy, the astronomer, corrected his own astigmatism by means of a cylindrical lens.
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.
DAVID RITTENHOUSE (1732-1796), American astronomer, was born at Germantown, Pennsylvania, on the 8th of April.
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.
His career as a professional astronomer began in 1870, when he was elected Savilian professor of astronomy at Oxford.
JOHN THOMAS ROMNEY ROBINSON (1792-1882), Irish astronomer and physicist, was born in Dublin on the 23rd of April 1792.
COPERNICUS (or [[Koppernigk), Nicolaus]] (1473-1543), Polish astronomer, was born on the 19th of February 1473, at Thorn in Prussian Poland, where his father, a native of Cracow, had settled as a wholesale trader.
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.
PIERRE SIMON LAPLACE, MARQUIS DE (1749-1827), French mathematician and astronomer, was born at Beaumont-en-Auge in Normandy, on the 28th of March 1749.