John Dollond FRS (21 June [O.S. 10 June] 1706 – 30 November 1761) was an English optician, known for his successful optics business and his patenting and...

Dollond may refer to: Dollond (crater), lunar crater John Dollond (1706–1761), English optician Peter Dollond (1731–1821), English optician, son of John...

1750, Peter Dollond opened a small optical business in Vine Street, near Hatton Garden in London. He was joined by his father, John Dollond, in 1752. The...

crater Abulfeda. It was named after British optician John Dollond. Due west of Dollond is Anděl. Dollond is circular and cone shaped, with a tiny floor at...

Peter Dollond (2 February 1731 – 2 July 1820) was an English inventor of optical instruments. He was the son of optician John Dollond. He is known for...

1733 telescope made by Chester Moore Hall, who did not publicize it. John Dollond learned of Hall's invention and began producing telescopes using it in...

lens with the same focal length. History of the achromatic telescope John Dollond, who patented and commercialised the crown/flint doublet Sandbows and...

Bass mentioned Hall's lenses to John Dollond, who understood their potential and was able to reproduce their design. Dollond applied for and was granted a...

Chester Moore Hall, although it was independently invented and patented by John Dollond around 1758. The design overcame the need for very long focal lengths...

he thought the path of the light depended only on its color. In 1757 John Dollond made an achromatised dioptric, which was the forerunner of the lenses...

flint), invented the first achromatic doublet. His work was taken up by John Dollond in his Account of some experiments concerning the different refrangibility...

Hall in England in 1733, an invention also claimed by fellow Englishman John Dollond in a 1758 patent. Developments in transatlantic commerce were the impetus...

– John Dollond Coining the phrase 'Big Bang' – Fred Hoyle First theorised existence of black holes, binary stars; invented torsion balance – John Michell...

Peter Dollond answers Jesse Ramsden - A review of the events of the invention of the achromatic doublet with emphasis on the roles of Hall, Bass, John Dollond...

failure of light of different component wavelengths to converge. Optician John Dollond (1706–1761) tried to correct for this distortion by combining two separate...

King's Silversmith. John Dollond (1706–1761), optical instruments manufacturer, founded business in 1750 that was to become Dollond and Aitchison. Gustav...

specifications. 1733 — Chester Moore Hall invents the achromatic lens. 1758 — John Dollond re-invents and patents the achromatic lens. 1783 — Jesse Ramsden invents...

by changing the distance between two object-glasses of equal focus. John Dollond, in 1754, combined Savary's idea of the divided object-glass with Bouguer's...

Sarah Dollond, daughter of John Dollond, the famous maker of high quality lenses and optical instruments. Ramsden received a share in Dollond's patent...

S.) Anthony Collins, English philosopher and author (d. 1729) 1706 – John Dollond, English optician and astronomer (d. 1761) 1710 – James Short, Scottish-English...

double lens. So Bass could later pass on the mystery of the Achromaten to John Dollond, who received the patent for their production in 1758. Handley, Neil...

November 30 – John Dollond, English optician (b. 1706) December 9 – Tarabai, Indian queen regent of the Maratha Empire (b. 1675) December 15 – John Willes (judge)...

(Spain) 1753 – Vilnius Observatory at Vilnius University, Lithuania 1758 – John Dollond reinvents the achromatic lens 1761 – Joseph-Nicolas Delisle 62 observing...

1682) 1760 – Friederike Caroline Neuber, German actress (b. 1697) 1761 – John Dollond, English optician and astronomer (b. 1706) 1765 – George Glas, Scottish...

(Subscription or UK public library membership required.) "Oxford DNB article:Dollond family (subscription needed)". Oxford Dictionary of National Biography...

Sauvages de Lacroix, French physician and botanist (died 1767) June 10 – John Dollond, English optician (died 1761) December 17 – Émilie du Châtelet, French...

Name Lifespan Country of work John Henry Dallmeyer 1830–1883 England / Germany John Dobson 1915–2014 US John Dollond 1706–1761 England Henry Draper 1837–1882...

century John Dollond (also developed achromats in the 1750s) "Chester Moor Hall". Encyclopædia Britannica. Retrieved 25 May 2016. Sphaera – Peter Dollond answers...

Huguenots included the sculptor Louis François Roubiliac and the optician John Dollond. There was also a community of French Catholic immigrants, who ran French-language...

Troilius, Archbishop of Uppsala in the Church of Sweden (d. 1764) June 10 – John Dollond, English optician (d. 1761) June 15 – Johann Joachim Kändler, German...