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Topic: Jesse Ramsden

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	Ramsden.info - Listing of all things Ramsden
		Jesse was also responsible for the development of the high quality long distance surveying chain used by cartographers to triangulate and measure long distances during the era of military uncertainty in the late 18th century.
		Jesse was indeed a famous Ramsden, and he also rates mention in other stories as the source for exiling some people (who did him wrong) as convicts to the very NSW colony that his instruments helped discover and explore.
		J W Ramsden is responsible for the land donation and an initial £500 for the construction of the Church of St John the Evangelist, Newsome, near Huddersfield, West Yorkshire in 1871-1872.
	www.ramsden.info (1441 words)

	Ramsden (Site not responding. Last check: 2007-10-29)
		Jesse Ramsden, the son of a Yorkshire innkeeper, was born on October 6, 1735.
		Jesse Ramsden was appointed to build a theodolite that was capable of the accuracy required for such surveys.
		Ramsden was elected a member of the Royal Society in 1786 and of the Imperial Academy of St. Petersburgh in 1794.
	chem.ch.huji.ac.il /~eugeniik/history/ramsden.html (1214 words)

	Jesse Ramsden -- Facts, Info, and Encyclopedia article (Site not responding. Last check: 2007-10-29)
		Jesse Ramsden (October 6, 1735 - November 5, 1800) was an (An Indo-European language belonging to the West Germanic branch; the official language of Britain and the United States and most of the Commonwealth countries) English (additional info and facts about astronomical) astronomical instrument maker.
		Ramsden was born at Salterhebble near (additional info and facts about Halifax, England) Halifax, England.
		Ramsden is also responsible for the achromatic (Combination of lenses at the viewing end of optical instruments) eyepiece named after him, and also worked on new designs of electrostatic generators.
	www.absoluteastronomy.com /encyclopedia/j/je/jesse_ramsden.htm (440 words)

	Ramsden (Site not responding. Last check: 2007-10-29)
		It was Ramsden, however, 100 years later who found that this design reduces blurring of the image caused by the sphericity of the lenses or mirrors.
		Ramsden produced such an instrument in 1767 but it did not give as accurate results as was hoped.
		Ramsden's health deteriorated and he was advised to go to Brighton to aid his recovery.
	www-groups.dcs.st-and.ac.uk /~history/Mathematicians/Ramsden.html (795 words)

	Sphæra issue no. 8: article 5
		The newly-discovered manuscript, however, is a response to Ramsden's communication and is headed 'An answer to a paper presented to the Royal Society by Mr Jesse Ramsden F. which was read the 18th of June 1789 intitled remarks on a paper relating to the invention of the achromatic Telescope'.
		Ramsden's paper was King's source for the account of Hall ordering crown and flint components for an achromatic doublet separately from Edward Scarlett and James Mann, and of each of them independently sub-contracting their order to George Bass, who was thus able to discover the secret.
		The substance of Ramsden's paper is accurately summarized, despite Dollond's caveat that, 'I may not perhaps have been very accurate in what I have stated from Mr Ramsden's paper because I am obliged to do it from memory, being prevented by the general usage of the Royal Society from procuring a copy'.
	www.mhs.ox.ac.uk /sphaera/issue8/articl5.htm (2044 words)

	Making the Modern World - Jesse Ramsden
		Ramsden's skill and talent for making instruments was quickly recognised and he became an established manufacturer in London during the 1770s and 1780s.
		Ramsden's most important invention was the 'dividing engine', a machine for accurately obtaining division of angular and linear scales on instruments.
		Such was Ramsden's reputation that between 1784 and 1791 he was commissioned to construct 3-foot (91 cm) theodolites of the highest quality with unprecedented accuracy for detailed map-making.
	www.makingthemodernworld.org.uk /people/BG.0100 (165 words)

	Jesse Ramsden -- Encyclopædia Britannica (Site not responding. Last check: 2007-10-29)
		Ramsden was apprenticed as a boy to a cloth worker, but in 1758 he apprenticed himself to a mathematical instrument maker.
		Jesse was the son of Ohed, and the grandson of Boaz and Ruth.
		Jesse Helms was born on Oct. 18, 1921, in Monroe, N.C. He was an executive vice-president for the Capital Broadcasting Company from 1960 until 1972.
	www.britannica.com /eb/article-9062618 (737 words)

	Antique Telescope by Jesse Ramsden
		Ramsden employed over 50 men, but he was said to have undertaken the construction of the most delicate instruments himself.
		The eyepiece design employed is known as the "Ramsden" as it was developed by Ramsden earlier in his life.
		All of Ramsdens instruments were of the highest standard, and he was highly commended for this in 1787 by J.D. Cassini, who bought instruments for the Paris Observatory.
	www.btinternet.com /~hubbletelescope/ramsden.shtml (479 words)

	(08001) - Minor Planet Name (Site not responding. Last check: 2007-10-29)
		Jesse Ramsden (1735-1800) was the British designer and producer of highly accurate sextants, theodolites and other instruments.
		Piazzi discovered (1) Ceres using the Ramsden vertical circle of the Palermo Observatory.
		Jesse Ramsden and Ramsden's telescope at Palermo Observatory
	www.klet.org /names/view.php3?astnum=8001 (65 words)

	Ramsden
		In the Adler Planetarium and Astronomy Museum, Ramsden was apprenticed as a boy to.
		Ramsden Observatory is located on Earth's Moon, in the center of Sinus Medii (literally "The Bay of the Center"), at Lunar geographical coordinates 0 degrees North, 0 degrees East.
		USS Ramsden (DE-382) and USCGC Ramsden (WDE-482) Ramsden: Marvin Lee Ramsden, born on 2 January 1919 at Pleasant Lake, N. In Coeur d'Alene, Idaho, the practice of Ramsden and Lyons extends through the ten northern counties of Idaho.
	www.99hosted.com /names14639.html (352 words)

	ATS Frequently Asked Questions - Index (Site not responding. Last check: 2007-10-29)
		At the age of 16 he was apprenticed, first to a cloth worker and later to a scientific instrument maker in London.
		He was highly respected and became known as "Honest Jesse." He employed as many as 60 workers but insisted that only work of the highest quality left his shop.
		Telescopes and other instruments made in Ramsden’s shop are highly prized by collectors today because of their careful and accurate construction and attention to detail.
	www.webari.com /oldscope/atspages/ramsden.htm (414 words)

	Ramsden Observatory (Site not responding. Last check: 2007-10-29)
		The Observatory is named for the British mathematician Jesse Ramsden, who showed that Cassegrain's design for a reflecting telescope reduces the spherical aberration introduced by curved lenses and mirrors(
		Ramsden Observatory is owned and operated by the Intersettlement Geographic Society, the 23rd century descendant of the National Geographic Society that was founded on January 27, 1888, in the city of Washington DC, the capital of the old, pre-CEGA United States of America.
		Ramsden Observatory is located in the center of Sinus Medii.
	www.lpl.arizona.edu /~schaller/JC (1381 words)

	Geodetic Surveys
		Jesse Ramsden's theodolite with a 3 ft. circle reading to 1" built in 1787 was used for the angle observations and despite its weight of about 300 lbs.
		Ramsden's direction theodolite is certainly among the 4 or 5 greatest technological advances ever in geodetic surveying.
		Ramsden theodolite, an instrument of similar weight in the trigonometrical survey of Switzerland.
	www.ngs.noaa.gov /PUBS_LIB/geodetic_survey_1807.html (16922 words)

	Science Museum London - Treasures (Site not responding. Last check: 2007-10-29)
		This theodolite, made by specialist instrument-maker Jesse Ramsden in the late eighteenth century, is the oldest of its kind to survive.
		It was the first used to measure the triangulation angles which led to the original Ordnance Survey maps of the country.
		The instrument had to withstand an immense amount of wear and tear in constant use, rough travelling and exposure to the weather.
	www.sciencemuseum.org.uk /on-line/treasure/objects/1876-1203.asp (115 words)

	Treasures - Troughtons Dividing engine (1778)
		Dividing, or marking, the scales on the instruments by hand was slow and demanding, so that when in 1775 Jesse Ramsden produced a successful machine that could perform the task mechanically he was well rewarded.
		The dividing engine on display was completed by John Troughton in 1778 and is similar to Ramsden's original machine.
		The engraving is taken from Description of an Engine for Dividing Mathematical Instruments by Jesse Ramsden, 1777.
	www.sciencemuseum.org.uk /collections/treasures/trought3.asp (100 words)

	NL20 (Site not responding. Last check: 2007-10-29)
		The telescope with its large and finely divided scales was intended for accurate positional astronomy.
		It had been made some years earlier by Jeremiah Sisson, one of the foremost precision instrument makers in London but, incredibly enough, was re-divided by Jesse Ramsden in 1782 on the instructions of Lord Bute.
		Ramsden was the doyen of accurate scale division, being the first to automate the process successfully.
	www.abdn.ac.uk /~nph126/items/nl20.htm (130 words)

	Troughton (Site not responding. Last check: 2007-10-29)
		Between 1775 and 1778 John constructed a dividing engine, on the lines of that recently designed by Jesse Ramsden, by which he was able to increase both his accuracy and his rate of work.
		Edward Troughton took the science of instrument-making very seriously indeed and began to study the mathematical background necessary, as well as astronomy so that he could understand precisely how the instruments were being used and the type of scientific discoveries that users of the instruments were hoping to make.
		Troughton soon established himself as the leading maker of instruments in England for not only had his brother John died in 1788 but also the other brilliant maker of scientific instruments Ramsden died in 1800.
	www-groups.dcs.st-and.ac.uk /~history/Mathematicians/Troughton.html (1227 words)

	A portable transit instrument. - - Port Cities
		Description: A portable transit instrument similar to that used on James Cook’s Transit of Venus expedition of 1769.
		This telescope is made by Jesse Ramsden with optics by John Dollond and inscribed ‘Fait par Ramsden pour Dollond, London’.
		It is a 3.5-ft (106 cm) transit instrument with a focal length of 42 inches (106 cm), an aperture of 1.75 inches (4.45 cm) and axis of 30 inches (76 cm).
	www.portcities.org.uk /london/server.php?show=conMediaFile.6253 (186 words)

	barometer101 (Site not responding. Last check: 2007-10-29)
		He took over the business of Jesse Ramsden in Piccadilly when Ramsden died in 1800.
		Berge made stick and marine barometers and some are signed "Berge London, late Ramsden".
		He was, no doubt, trading on the very high reputation that Ramsden had built up over the years
	www.allan-smith-antique-clocks.co.uk /detailpages/bar101.htm (91 words)

	HistoryWired: A few of our favorite things
		Invented by Jesse Ramsden of London, England, this was the first machine that could divide the rim of a circle automatically.
		It was of great importance in the manufacture of surveying and navigation instruments.
		The Philadelphia firm of Knox and Shain, which made navigational instruments, purchased Ramsden's dividing engine from his successors.
	historywired.si.edu /object.cfm?ID=347 (131 words)

	A sextant. - Trades, industries and institutions - Port Cities
		Like the octant, the sextant enables the angular distance between two points to be measured, for instance the Sun and the horizon or two stars.
		This example was made by one of the great instrument makers of the 18th century, Jesse Ramsden.
		The sextant is usually made of brass and has a very open frame design to reduce weight and wind resistance when in use.
	www.portcities.org.uk /london/server.php?show=conMediaFile.6971 (131 words)

	RAMSDEN, JESSE (1735-1800) - Online Information article about RAMSDEN, JESSE (1735-1800) (Site not responding. Last check: 2007-10-29)
		RAMSDEN, JESSE (1735-1800) - Online Information article about RAMSDEN, JESSE (1735-1800)
		About four years afterwards he started business on his own See also:
		Ramsden's speciality was divided circles, which began to supersede the quadrants in observatories towards the end of the 18th See also:
	encyclopedia.jrank.org /PYR_RAY/RAMSDEN_JESSE_1735_1800_.html (304 words)

	Foscarini Physics Lab: Ramsden electic machine (Site not responding. Last check: 2007-10-29)
		The physique and burgomaster of Magdeburg Otto von Guericke (1602 - 1686), known for his spectacular public experiments on the atmospheric pressure (Magdeburg hemispheres), was the first to build an electric machine.
		This tools were gradually improved and the most efficient electric machine at the end of the XVIII century was the one invented around 1770 by Jesse Ramsden (1735 - 1800).
		This type of machine was widely used for about a century.
	www.provincia.venezia.it /mfosc/fisica94/english/ukramsden.html (110 words)

	The Dividing Engine
		This wonderful machine is on exhibit at the Museum of Surveying in Lansing, Michigan
		Prior to his invention, the division and inscription of scales on mathematical instruments was done by hand.
		For several decades, the British dominated the trade in precise instruments, as no American could compete with the new products of the mechanical dividing engine.
	www.surveyhistory.org /the_dividing_engine1.htm (919 words)

	untitled (Site not responding. Last check: 2007-10-29)
		The Ramsden workshop and the production of the Palermo circle
		Jesse Ramsden (1735-1800) was London's leading maker of astronomical instruments at a time when many observatories were eqiuipping themselves with new and larger apparatus.
		Ramsden had the space and the skilled workforce, but business often took him away from London; all these matters perhaps explain the delay in completing Piazzi's great circle.
	www.astropa.unipa.it /INSAPIII/Abstracts/McConnell.htm (108 words)

	Maturin's Medicine R-Z
		Maturin’s reputation was such that the sailors believed him able to revive patients when all hope was lost.
		Jesse Ramsden (1735-1800) was the founder of a business in London which supplied fine optical, nautical and scientific instruments.
		Closing of blood vessels in a wound by the application of a very hot object.
	www.alia.org.au /~kwebb/Maturin/MMRZ.html (3653 words)

	[No title] (Site not responding. Last check: 2007-10-29)
		Brass sextant made by Jesse Ramsden, London, circa 1770.
		The sextant has the Hydrographic Office serial number D.33.
		The Hydrographic Office inherited it from the Board of Longitude, which had supplied the instrument for Captain James Cook's third voyage of exploration.
	www.hlf.org.uk /NHMFWeb/Database/datapage2.html?projectid=533 (41 words)

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