peter dollond (12 Ergebnisse)

Zustand: New. In.

Zustand: New. In.

Taschenbuch. Zustand: Neu. Neuware.

Buch. Zustand: Neu. Neuware.

Zustand: New.

Zustand: New.

Taschenbuch. Zustand: Neu. Neuware - The 18th century was a wealth of knowledge, exploration and rapidly growing technology and expanding record-keeping made possible by advances in the printing press. In its determination to preserve the century of revolution, Gale initiated a revolution of its own: digitization of epic proportions to preserve these invaluable works in the largest archive of its kind. Now for the first time these high-quality digital copies of original 18th century manuscripts are available in print, making them highly accessible to libraries, undergraduate students, and independent scholars.Medical theory and practice of the 1700s developed rapidly, as is evidenced by the extensive collection, which includes descriptions of diseases, their conditions, and treatments. Books on science and technology, agriculture, military technology, natural philosophy, even cookbooks, are all contained here.++++The below data was compiled from various identification fields in the bibliographic record of this title. This data is provided as an additional tool in helping to insure edition identification: ++++British LibraryT067238Includes: 'Directions pour l'usage du sextant de Hadley pour determiner la longitude sur mer'. Sig. B8 (pp.30-31) is not present. Includes: a half-title.Londres, [1772 ]. 56p., plates; 8°.

Buch. Zustand: Neu. Neuware - The 18th century was a wealth of knowledge, exploration and rapidly growing technology and expanding record-keeping made possible by advances in the printing press. In its determination to preserve the century of revolution, Gale initiated a revolution of its own: digitization of epic proportions to preserve these invaluable works in the largest archive of its kind. Now for the first time these high-quality digital copies of original 18th century manuscripts are available in print, making them highly accessible to libraries, undergraduate students, and independent scholars.Medical theory and practice of the 1700s developed rapidly, as is evidenced by the extensive collection, which includes descriptions of diseases, their conditions, and treatments. Books on science and technology, agriculture, military technology, natural philosophy, even cookbooks, are all contained here.++++The below data was compiled from various identification fields in the bibliographic record of this title. This data is provided as an additional tool in helping to insure edition identification: ++++British LibraryT067238Includes: 'Directions pour l'usage du sextant de Hadley pour determiner la longitude sur mer'. Sig. B8 (pp.30-31) is not present. Includes: a half-title.Londres, [1772 ]. 56p., plates; 8°.

Other. Octavo, pages 331-336. In Good plus condition. Disbound from original binding. Tearing to spine from disbanding. Pages have rust staining from paper clip, bending to page edges, and worming to pages near tail edge. Horology Binder, Room A Ephemera. From the collection of Silvio Bedini. Bedini spent twenty five years at the Smithsonian Institution, serving as curator in the Department of Mechanical and Civil Engineering in the new Museum of History and Technology (now the National Museum of American History) before serving as first Assistant Director then Deputy Director of the National Museum of History and Technology. He then served as Keeper of Rare Books at the Dibner Library of the History of Science and Technology, a branch of the Smithsonian Institution Libraries, before becoming a Historian Emeritus. He specialized in early scientific instruments. 1380009. Special Collections.

No binding. A mahogany and brass-mounted waywiser, the wheel with iron tread and six rounded spokes, 31¾ in. (80.5 cm.) diameter. Surmounted by a circular engraved silvered-brass dial inscribedÂDollond London,Âenclosed by a hinged glazed door complete with clasp. The dial has two hands and records yards, poles, miles and furlongs. This instrument is used to measure distances, most usually roads and dates back to the roman period. It was re-introduced into Europe in the seventeenth century. The outer rim, or tyre, may measure 36, 72 or 100 inches, which gives wheel diameters of about 11.5, 23 and 32 inches. The revolutions of the wheel are recorded in the large dial mounted in a box below the handle. The face identifies the maker as Dollond. Noted makers 'included Heath, Heath & Wing, Martin, Adams, Dolland, Cary and W & S Jones' (Turner). The wheel usually measures 8.25 feet in circumference [as here], such that two revolutions equal one pole. The larger hand on the dial makes one sweep per mile (320 poles or 8 furlongs). The shorter hand indicates the number of miles travelled.ÂThe famous firm called Dollond began with John Dollond (1706-61). His father was involved in silk weaving, and John followed in the same trade. Because his father died when John was young, John's formal education was cut short. He managed to teach himself Greek and Latin, and various branches of science and mathematics. Astronomy and optics became a hobby of his. However, it was his son Peter (1730-1820) who after working as a silk weaver with his father, opened and opticians in 1750 in Kennington, London. After two years, his father also gave up the silk trade and joined Peter.John Dollond was a brilliant theorist and experimenter. His greatest achievement, by far, was the invention of the achromatic lens. For a century, it had been believed that all lenses - and therefore all telescopes - caused some degree of colour distortion. John Dollond first showed how to compensate for those distortions, and then demonstrated how they could be altogether eliminated, disproving one of Isaac Newton's theories of optics. The first telescopes without colour distortions were produced in the Dollond shops. Peter Dollond lacked theoretical knowledge, but he had enormous practical skill. In his workshop, he designed and built precision devices for astronomy and celestial navigation. He produced countless refracting and reflecting telescopes and, with his father, built three-foot-long telescopes that could do the work of older telescopes that were 45 feet long. When John Dollond died in 1761, Peter Dollond took on his brother as a partner. When that brother died, Peter Dollond started working with his nephew, George Huggins, who changed his name to George Dollond.George Dollond (1774-1852) had both his uncle's mechanical skill and his grandfather's grasp of theory. He built numerous precision astronomical instruments with exacting attention to detail. He also invented an 'atmospheric recorder' by which continuous measurements of temperature, wind, rainfall, humidity, pressure and other weather data were printed on rolls of paper. After Peter Dollond died in 1820, George Dollond ran the family business until his own death, on 13 May 1852, which marked the end of the remarkable Dollond century (The Vauxhall Society). Provenance: Christie's, Glasgow, 14.4.1994 lot 173. Turner (1998) p. 45. Warner (2019); Worms & Baynton-Williams (2011).

(London, J. Nichols, 1779). 4to. Extract from "Philosophical Transactions, of the Royal Society of London." Vol. 69, Year 1779 - Part II. Pp. 332-336 and 1 engraved plate showing apparatus.

No Binding. Zustand: Very Good. An excellent and very scarce letter in the hand of Peter Dollond (1731-1820), optical instrument maker, c.1790. The letter was written to a Mr Mouchett in the immediate aftermath of the death of Dollond's wife. This was likely Ann Phillips, Peter Dollond's wife since their marriage in 1761. Dollond remarried in 1795, so we have a probable terminus ad quem for the letter. The content links Dollond to a network of people involved in the business of the instrument trade. Mouchett is probably Henry Ann Mouchett, listed in various registers as an 'Instrument-keeper'. In the letter Dollond informs Mouchett that 'Mr Grignion' has asked Dollond to convey certain information and goods to Mouchett. Grignion must be either Henry Grignion, apprentice to George (Huggins) Dollond in 1806, or, more likely, Henry's father Claudius Grignion. Dollond informs Mouchett that Mr Grignion is travelling to Bath, where Dollond's wife had died. Various arrangements are made, concerning the transfer of monies and "the black leather case which contains some papers of your concerns". The letter is addressed from Stamford Street, a fashionable new Lambeth street in the 1790s, but not an address known to be associated with Dollond. It is also unclear why Grignion would be travelling to Bath rather than Dollond himself. Nevertheless, as biographical material on instrument makers is so scarce, it is revealing to see the close network of largely emigre makers working together. For Dollond see Brian Gee, Francis Watkins and the Dollond Telescope Patent Controversy, edited by Anita McConnell and A.D Morrison-Low (Ashgate, 2014). Condition is very good: sheet folded with address side cut down; laid paper age-toned, watermarked 'R. Will[iams]'. Signed by Author(s).