Dalekohled
Zdravím všechny hledače a hledačky. Po delší odmlce posílám další půdovku. Jedná se o tento dalekohled. Jediné co se dá zjistit je, že byl vyroben v Londýně. A proto se obracím na Vás s prosbou o další určení.callcar
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Komentáře
Iceman
13. 08. 2009, 10:30http://www.optics. arizona. edu/antiques/Telescope/Maker/Ramsden. htm
Tady je jeho dvojče... a ještě jeden skoro totožný kus. To stáří, to stáří...
A tady něco faktů:
Jesse Ramsden (October 6, 1735 – November 5, 1800) was an English
England
native_name =|conventional_long_name = England|common_name = England|image_flag = Flag of England. svg|image_coat = England COA. svg|symbol_type = Royal Coat of Arms...
astronomical
Astronomy
Astronomy is the science of Astronomical object and Phenomenon that originate outside the Earth's atmosphere. It is concerned with the evolution, physics, chemistry, meteorology, and motion of celestial objects, as well as the physical cosmology...
and scientific instrument maker.
Ramsden was born at Salterhebble
Salterhebble
Salterhebble is a district of Halifax, West Yorkshire, West Yorkshire, England, where the River Hebble flows into the River Calder. It is on the main route into Halifax from Huddersfield and Brighouse...
near Halifax
Halifax, West Yorkshire
Halifax is a large market town within the Calderdale, in West Yorkshire, England, with a population of 82,056 in the United Kingdom Census 2001...
, West Yorkshire, England. After serving his apprenticeship with a cloth-worker in Halifax, he went in 1755 to London
London
London is the capital of both England and the United Kingdom, and the most populous municipality in the European Union. An important settlement for two millennia, History of London goes back to its founding by the Roman Empire...
, where in 1758 he was apprenticed to a mathematical instrument maker. About four years afterwards he started business on his own account and secured a great reputation with his products.
Ramsden created one of the first high-quality dividing engine
Dividing engine
A dividing engine is a device specifically employed to mark Graduation s on measurement instruments...
s.
Iceman
13. 08. 2009, 10:31Sorry, zkopírovalo se toho dě těch faktů nějak moc...
Iceman
13. 08. 2009, 10:31... do těch... už na mě doráží demence
Iceman
13. 08. 2009, 10:34http://www-groups. mcs. st-andrews. ac. uk/history/Biographies/Ramsden. html
Každopádně tady je jeho biografie...
Iceman
13. 08. 2009, 10:35Ten tubus je dokonce z mahagonu, to je náádhera...
petrusko
13. 08. 2009, 13:19Iceman
teodor
13. 08. 2009, 13:48krásna vecička....
Willda
13. 08. 2009, 16:55Vothan
23. 08. 2009, 23:42nebo taky tady něco... http://www.hubbletelescope. btinternet.co.uk/ramsden. shtml
tiše závidím... teda vlatně nahlas...