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Edward Scarlett
Edward Scarlett (1688 – 1743 in London) was an English optician and instrument maker, who first invented an eyeglass frame with earhooks in 1727. This frame is held by the nose and ears, at times the glasses were called in contrast to the nasal cannula and ''temples'' because they had short straps that pressed on the temple. Among other things, Scarlett made polemoscopes (optical instruments that could be seen over obstacles) and tried not only to limit them to military use, but also to expel them. The lenses themselves were not, as often claimed, invented in 1285 by Salvino degli Armati. Around 1733, Scarlett was commissioned by Chester Moor Hall, the inventor of color-pure lenses, to produce a partial lens of the first Achromaten. However, he passed this order on to George Bass. He had also received the subcontract for the other lens part and recognized the color purity of the double lens. So Bass could later pass on the mystery of the Achromaten to John Dollond John Dol ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
London
London is the capital and largest city of England and the United Kingdom, with a population of just under 9 million. It stands on the River Thames in south-east England at the head of a estuary down to the North Sea, and has been a major settlement for two millennia. The City of London, its ancient core and financial centre, was founded by the Romans as '' Londinium'' and retains its medieval boundaries.See also: Independent city § National capitals The City of Westminster, to the west of the City of London, has for centuries hosted the national government and parliament. Since the 19th century, the name "London" has also referred to the metropolis around this core, historically split between the counties of Middlesex, Essex, Surrey, Kent, and Hertfordshire, which largely comprises Greater London, governed by the Greater London Authority.The Greater London Authority consists of the Mayor of London and the London Assembly. The London Mayor is distinguished fr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Optician
An optician, or ''dispensing optician'', is a technical practitioner who designs, fits and dispenses lenses for the correction of a person's vision. Opticians determine the specifications of various ophthalmic appliances that will give the necessary correction to a person's eyesight. Some registered or licensed opticians also design and fit special appliances to correct cosmetic, traumatic or anatomical defects. These devices are called shells or artificial eyes. Other registered or licensed opticians manufacture lenses to their own specifications and design and manufacture spectacle frames and other devices. Corrective ophthalmic appliances may be contact lenses, spectacles lenses, low vision aids or ophthalmic prosthetics to those who are partially sighted. The appliances are mounted either on the eye as contact lenses or mounted in a frame or holder in front of the eye as spectacles or as a monocle. Opticians may work in any variety of settings such as joint practice, hospi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nasal Cannula
The nasal cannula (NC) is a device used to deliver supplemental oxygen or increased airflow to a patient or person in need of respiratory help. This device consists of a lightweight tube which on one end splits into two prongs which are placed in the nostrils and from which a mixture of air and oxygen flows. The other end of the tube is connected to an oxygen supply such as a portable oxygen generator, or a wall connection in a hospital via a flowmeter. The cannula is generally attached to the patient by way of the tube hooking around the patient's ears or by an elastic headband. The earliest, and most widely used form of adult nasal cannula carries 1–3 litres of oxygen per minute. Cannulae with smaller prongs intended for infant or neonatal use can carry less than one litre per minute. Flow rates of up to 60 litres of air/oxygen per minute can be delivered through wider bore humidified nasal cannula. The nasal cannula was invented by Wilfred Jones and patented in 1949 by h ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Salvino Degli Armati
Salvino D'Armato degli Armati of Florence is sometimes credited with the invention of eyeglasses in the 13th century, however it has been shown that this claim was a hoax, and that there was no member of the Armati family with that name at the time. The earliest mention of Salvino degli Armati as the inventor of eyeglasses occurred in 1684.Vincent Ilardi, ''Renaissance Vision from Spectacles to Telescopes'' (Philadelphia, Pennsylvania: American Philosophical Society, 2007)pages 13–18 Ferdinando Leopoldo del Migliore (1628–1696) of Florence published a book, ''Firenze citta' noblissima illustrata'' (''Florence, Most Noble City, illustrated''). In this book, del Migliore claimed to own a burial register of the Church of Santa Maria Maggiore, which had recently been renovated. This register supposedly recorded Armati's epitaph as follows: ''Original'' : "Qui diace Salvino d'Armato degl' Armati di Fir., Inventor degl'occhiali. Dio gli perdoni la peccata. Anno D. MCCCXVII"F ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chester Moore Hall
Chester Moore Hall (9 December 1703, Leigh, Essex, England – 17 March 1771, Sutton) was a British lawyer and inventor who produced the first achromatic lenses in 1729 or 1733 (accounts differ). He used the achromatic lens to build the first achromatic telescope, a refracting telescope free from chromatic aberration (colour distortion). He lived at New Hall, Sutton. His name was also spelled ''Chester Moor Hall'' and ''Chester More Hall''. The design had two elements, a crown and flint glass, that brought two wavelengths of light to a focus. Chester is noted as having made the first twin color corrected lens in 1730. See also * List of largest optical telescopes in the 18th century *John Dollond John Dollond FRS (10 June O.S. (21 June N.S.) 170630 November 1761) was an English optician, known for his successful optics business and his patenting and commercialization of achromatic doublets. Biography Dollond was the son of a Hugue ... (also developed achromats in th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
George Bass (optician)
George Bass was an optician known to have made an achromatic doublet around 1733. The specifications for the lens elements were given by Chester Moore Hall. According to Hoyle,Fred Hoyle, ''Astronomy; A history of man's investigation of the universe'', Rathbone Books Limited, 1962, Hall wished to keep his work on the achromatic lenses a secret and contracted the manufacture of the crown and flint lenses to two different opticians, Edward Scarlett and James Mann.- A review of the events of the invention of the achromatic doublet with emphasis on the roles of Hall, Bass, Jesse Ramsden, John Dollond John Dollond FRS (10 June O.S. (21 June N.S.) 170630 November 1761) was an English optician, known for his successful optics business and his patenting and commercialization of achromatic doublets. Biography Dollond was the son of a Hugue ... and others. They in turn sub-contracted the work to the same person, George Bass. He realized the two components were for the same c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
John Dollond
John Dollond FRS (10 June O.S. (21 June N.S.) 170630 November 1761) was an English optician, known for his successful optics business and his patenting and commercialization of achromatic doublets. Biography Dollond was the son of a Huguenot refugee, a silk-weaver at Spitalfields, London, where he was born. He followed his father's trade, but found time to acquire a knowledge of Latin, Greek, mathematics, physics, anatomy and other subjects. In 1752 he abandoned silk-weaving and joined his eldest son, Peter Dollond (1730–1820), who in 1750 had started in business as a maker of optical instruments; this business went on to become Dollond & Aitchison. His reputation grew rapidly, and in 1761 he was appointed optician to the king. In 1758 he published an "Account of some experiments concerning the different refrangibility of light" ('' Phil. Trans.'', 1758), describing the experiments that led him to the achievement with which his name is specially associated, the discovery ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
British Opticians
British may refer to: Peoples, culture, and language * British people, nationals or natives of the United Kingdom, British Overseas Territories, and Crown Dependencies. ** Britishness, the British identity and common culture * British English, the English language as spoken and written in the United Kingdom or, more broadly, throughout the British Isles * Celtic Britons, an ancient ethno-linguistic group * Brittonic languages, a branch of the Insular Celtic language family (formerly called British) ** Common Brittonic, an ancient language Other uses *''Brit(ish)'', a 2018 memoir by Afua Hirsch *People or things associated with: ** Great Britain, an island ** United Kingdom, a sovereign state ** Kingdom of Great Britain (1707–1800) ** United Kingdom of Great Britain and Ireland (1801–1922) See also * Terminology of the British Isles * Alternative names for the British * English (other) * Britannic (other) * British Isles * Brit (other) * Briton (d ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1688 Births
Events January–March * January 2 – Fleeing from the Spanish Navy, French pirate Raveneau de Lussan and his 70 men arrive on the west coast of Nicaragua, sink their boats, and make a difficult 10 day march to the city of Ocotal. * January 5 – Pirates Charles Swan and William Dampier and the crew of the privateer ''Cygnet'' become the first Englishmen to set foot on the continent of Australia. * January 11 – The Patta Fort and the Avandha Fort, located in what is now India's Maharashtra state near Ahmednagar, are captured from the Maratha clan by Mughul Army commander Matabar Khan. The Mughal Empire rules the area 73 years. * January 17 – Ilona Zrínyi, who has defended the Palanok Castle in Hungary from Austrian Imperial forces since 1685, is forced to surrender to General Antonio Caraffa. * January 29 – Madame Jeanne Guyon, French mystic, is arrested in France and imprisoned for seven months. * January 30 (January 20, 1687 old styl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1743 Deaths
Events January–March * January 1 – The Verendrye brothers, probably Louis-Joseph and François de La Vérendrye, become the first white people to see the Rocky Mountains from the eastern side (the Spanish conquistadors had seen the Rockies from the west side). * January 8 – King Augustus III of Poland, acting in his capacity as Elector of Saxony, signs an agreement with Austria, pledging help in war in return for part of Silesia to be conveyed to Saxony. * January 12 ** The Verendryes, and two members of the Mandan Indian tribe, reach the foot of the mountains, near the site of what is now Helena, Montana. ** An earthquake strikes the Philippines * January 16 –Cardinal André-Hercule de Fleury turns his effects over to King Louis XV of France, 13 days before his death on January 29. * January 23 –With mediation by France, Sweden and Russia begin peace negotiations at Åbo to end the Russo-Swedish War. By August 17, Sweden cedes all ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
