See also:CHARLES See also:PRITCHARD (1808–1893)
, See also:British astronomer,
was See also:born at
.
Alberbury, See also:Shropshire, on the 29th of See also:February
18o8
.
At the See also:age of eighteen he was enrolled as a See also:sizar at St
See also:John's See also:College, See also:Cambridge, whence he graduated in 183o as
See also:fourth wrangler
.
In 1832 he was elected See also:fellow of his college,
and in the following See also:year he was ordained, and became See also:head
See also:master of a private school at Stockwell
.
From 1834 to 1862
i See also:Report of the Royal See also:Commission on Penal See also:Servitude (1878–1879). he was headmaster of Clapham See also:grammar school
.
He then
retired to See also:Freshwater, in the Isle of See also:Wight, and took an active PRIVAS, a See also:town of See also:south-eastern See also:France, See also:capital of the depart-See also:interest in the affairs of the Royal Astronomical Society, of
which he became honorary secretary in 1862 and See also:president in 1866
.
His career as a professional astronomer began in 187o, when he was elected Savilian See also:professor of See also:astronomy at See also:- OXFORD
- OXFORD, EARLS OF
- OXFORD, EDWARD DE VERE, 17TH EARL
- OXFORD, JOHN DE VERE, 13TH EARL OF (1443-1513)
- OXFORD, PROVISIONS OF
- OXFORD, ROBERT DE VERE, 9TH EARL OF (1362-1392)
- OXFORD, ROBERT HARLEY, 1ST
Oxford
.
At his See also:request the university determined to erect a See also:fine See also:equatorial See also:telescope for the instruction of his class and for purposes of See also:research, a See also:- SCHEME (Lat. schema, Gr. oxfjya, figure, form, from the root axe, seen in exeiv, to have, hold, to be of such shape, form, &c.)
scheme which, in consequence of See also:Warren de la See also:Rue's munificent See also:gift of See also:instruments from his private See also:observatory at Cranford, See also:expanded into the See also:establishment of the new university observatory
.
By De la Rue's See also:advice, See also:Pritchard began his career there with a determination of the See also:physical See also:libration of the See also:- MOON (a common Teutonic word, cf. Ger. Mond, Du. maan, Dan. maane, &c., and cognate with such Indo-Germanic forms as Gr. µlip, Sans. ma's, Irish mi, &c.; Lat. uses luna, i.e. lucna, the shining one, lucere, to shine, for the moon, but preserves the word i
- MOON, SIR RICHARD, 1ST BARONET (1814-1899)
moon, or the See also:nutation of its See also:axis
.
In 1882 Pritchard commenced a systematic study of stellar See also:photometry
.
For this purpose he employed an See also:instrument known as the " See also:- WEDGE (O. Eng. wecg, a mass of metal, cognate with Dutch wig, wigge, Dan. vaegge, &c.; in Lith. the cognate form outside Teut. is found in wagis, a peg, spigot; there is no connexion with " weigh," " weight," which must be referred to the root wegh, to li
wedge photometer " (see PHOTOMETRY, See also:CELESTIAL, and Mem
.
R.A.S. xlvii
.
353), with which he measured the relative brightness of 2784 stars between the See also:North See also:Pole and about —ro° See also:declination
.
The results were published in 1885 in his Uranometria Nova Oxoniensis, and their importance was recognized by the bestowal in 1886 upon him, conjointly with Professor See also:Pickering, of the Royal Astronomical Society's See also:gold See also:medal
.
He now resolved to try the experiment of applying See also:photography to the determination of stellar See also:parallax
.
With the See also:object of testing the capabilities of the method, he took for his first See also:essay the well-known See also:star 61 Cygni, and his results agreed so well with those previously attained that he undertook the systematic measurement of the parallaxes of second-magnitude stars, and published the outcome in the third and fourth volumes of the Publications of the Oxford University Observatory
.
Although some lurking errors impaired the authority of the concluded parallaxes this See also:work ranks as a valuable contribution to astronomy, since it showed the possibility of employing photography in such delicate investigations
.
When the See also:great scheme of an See also:international survey of the heavens was projected, the See also:zone between 25° and 310 north declination was allotted to him, and at the See also:- TIME (0. Eng. Lima, cf. Icel. timi, Swed. timme, hour, Dan. time; from the root also seen in " tide," properly the time of between the flow and ebb of the sea, cf. O. Eng. getidan, to happen, " even-tide," &c.; it is not directly related to Lat. tempus)
- TIME, MEASUREMENT OF
- TIME, STANDARD
time of his See also:death some progress had been made in recording its included stars
.
Pritchard became a fellow of New College, Oxford, in 1883, and an honorary fellow of St John's College, Cambridge, in 1886
.
He was elected a fellow of the Royal Society in 1840, and in 1892 was awarded one of the royal medals for his work on photometry and stellar parallax
.
He died on the 28th of May 1893
.
See Proc
.
See also:Roy
.
See also:Soc. liv
.
3; See also:Month
.
Notices, Roy
.
See also:Asir
.
Soc. liv
.
198; W
.
E
.
Plummer, Observatory, xvi
.
256 (portrait); Astr. and See also:Astrophysics, xii
.
592; J
.
See also:Foster, Oxford Men and their Colleges, p
.
206; Hist
.
See also:Register of the Univ. of Oxford, p
.
95; The Times (May 3o, 1893); C
.
J
.
See also:- ROBINSON, EDWARD (1794–1863)
- ROBINSON, HENRY CRABB (1777–1867)
- ROBINSON, JOHN (1575–1625)
- ROBINSON, JOHN (1650-1723)
- ROBINSON, JOHN THOMAS ROMNEY (1792–1882)
- ROBINSON, MARY [" Perdita "] (1758–1800)
- ROBINSON, SIR JOHN BEVERLEY, BART
- ROBINSON, SIR JOSEPH BENJAMIN (1845– )
- ROBINSON, THEODORE (1852-1896)
Robinson's Register of See also:Merchant Taylors' School, ii
.
21o; See also:Charles Pritchard, D.D., See also:Memoirs of his See also:Life, by Ada Pritchard (See also:London, 1897)
.
End of Article: