See also:

• DAVID
• DAVID (a Hebrew name meaning probably beloved 1)
• DAVID, FELICIEN (1810—1876)
• DAVID, GERARD [GHEERAERT DAVIT], (?=1523)
• DAVID, PIERRE JEAN (1789–1856)
• DAVID, ST (Dewi, Sant)

DAVID See also:

• DAVID RITTENHOUSE (1732-1796)

RITTENHOUSE (1732-1796)  , See also:

• AMERICAN

American astronomer, was See also:

• BORN, IGNAZ, EDLER VON (1742–1791)

born at See also:

• GERMANTOWN

Germantown, See also:

• PENNSYLVANIA
• PENNSYLVANIA, UNIVERSITY OF

Pennsylvania, on the 8th of See also:

• APRIL

April 1732 . First a watchmaker and mechanician he afterwards became treasurer of Pennsylvania (1777-89), and from 1792 to 1795 director of the U.S. See also:

• MINT
• MINT (Lat. moneta; Mid. Eng. mynt)

mint (See also:

• PHILADELPHIA

Philadelphia) . He was largely occupied in 1763 and in 1779-86 in settling the boundaries of several of the states . He was a See also:

• FELLOW

fellow of the Royal Society of See also:

• LONDON

London, and a member of the American Philosophical Society; and was elected See also:

• PRESIDENT (Fr. president, from Lat. praesidens, post-Augustan Lat. for praeses, director, ruler, from praesidere, to sit in front of, preside)

president of the latter society in 1791 . As an astronomer, See also:

• RITTENHOUSE, DAVID (1732-1796)

Rittenhouse's See also:

• PRINCIPAL

principal merit is that he introduced in 1786 the use of spider lines in the See also:

• FOCUS (Latin for " hearth " or " fireplace ")

focus of a transit See also:

• INSTRUMENT (Lat. instrumentum, from insincere, to build up, furnish, arrange, prepare)

instrument . His priority with regard to this useful invention was acknowledged by E . See also:

• TROUGHTON, EDWARD (1753-1835)

Troughton, who brought spider lines into universal use in astronomical See also:

• INSTRUMENTS

instruments (see von See also:

• ZACH, FRANZ XAVER, BARON VON (1754-1832)

Zach's Monatliche Correspondenz, vol. ii. p . 215), but Felice See also:

• FONTANA, DOMENICO (1543-1607)
• FONTANA, LAVINIA (1552-1614)
• FONTANA, PROSPERO (1512-1597)

Fontana (173o-18o5), See also:

• PROFESSOR (the Latin noun formed from the verb profiteri, to declare publicly, to acknowledge, profess)

professor of physics at the university of See also:

• PISA
• PISA, COUNCIL OF (1409)

Pisa, and afterwards director of the museum at See also:

• FLORENCE
• FLORENCE (Ital. Firenze, Lat. Florentia)

Florence, had already anticipated the invention in 1775, though no doubt this fact was unknown, to Rittenhouse . His researches were published in the Transactions of the American Philosophical Society (1785 1799) . He died at Philadelphia on the 26th of See also:

• JUNE

June 1796 .