|
Burning Glass
A burning glass or burning lens is a large convex lens that can concentrate the sun's rays onto a small area, heating up the area and thus resulting in ignition of the exposed surface. Burning mirrors achieve a similar effect by using reflecting surfaces to focus the light. They were used in 18th-century chemical studies for burning materials in closed glass vessels where the products of combustion could be trapped for analysis. The burning glass was a useful contrivance in the days before electrical ignition was easily achieved. Historical development: from legend to science Burning glass technology has been known since antiquity, as described by Greek and Roman writers who recorded the use of lenses to start fires for various purposes. Pliny the Elder noted the use of glass vases filled with water to create a heat intense enough to ignite clothing, as well as convex lenses that were used to cauterize wounds. Plutarch refers to a burning mirror made of joined triangular metal m ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Priestley Burning Lens Replica
Priestley may refer to: Places * Priestley, West Virginia, US, an unincorporated community * Priestley Glacier, a major valley glacier in Antarctica * Priestley (lunar crater), on the far side of the Moon * Priestley (Martian crater) * 5577 Priestley, an inner main belt asteroid People Arts * Alice Priestley (born 1962), Canadian children's writer and illustrator * Brian Priestley (born 1940), English jazz writer, pianist and arranger * Chris Priestley (born 1958), British children's book author and illustrator * Jason Priestley (born 1969), Canadian-American actor * J. B. Priestley (1894–1984), English writer and broadcaster * Mark Priestley (1976–2008), Australian actor *Rick Priestley (born 1959), British miniature wargame designer and author * Robert Priestley (1901–1986), American set decorator * Tom Priestley (born 1932), sound and film editor Sciences * Henry Priestley (biochemist) (1884–1961), Australian biochemist * Hilary Priestley, British mathema ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Roman Navy
The naval forces of the ancient Roman state ( la, Classis, lit=fleet) were instrumental in the Roman conquest of the Mediterranean Basin, but it never enjoyed the prestige of the Roman legions. Throughout their history, the Romans remained a primarily land-based people and relied partially on their more nautically inclined subjects, such as the Greeks and the Egyptians, to build their ships. Because of that, the navy was never completely embraced by the Roman state, and deemed somewhat "un-Roman". In antiquity, navies and trading fleets did not have the logistical autonomy that modern ships and fleets possess, and unlike modern naval forces, the Roman navy even at its height never existed as an autonomous service but operated as an adjunct to the Roman army. During the course of the First Punic War, the Roman navy was massively expanded and played a vital role in the Roman victory and the Roman Republic's eventual ascension to hegemony in the Mediterranean Sea. In the course of t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Athanasius Kircher
Athanasius Kircher (2 May 1602 – 27 November 1680) was a German Jesuit scholar and polymath who published around 40 major works, most notably in the fields of comparative religion, geology, and medicine. Kircher has been compared to fellow Jesuit Roger Joseph Boscovich and to Leonardo da Vinci for his enormous range of interests, and has been honoured with the title "Master of a Hundred Arts".Woods, p. 108. He taught for more than 40 years at the Roman College, where he set up a wunderkammer. A resurgence of interest in Kircher has occurred within the scholarly community in recent decades. Kircher claimed to have deciphered the hieroglyphic writing of the ancient Egyptian language, but most of his assumptions and translations in this field were later found to be incorrect. He did, however, correctly establish the link between the ancient Egyptian and the Coptic languages, and some commentators regard him as the founder of Egyptology. Kircher was also fascinated ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Giambattista Della Porta
Giambattista della Porta (; 1535 – 4 February 1615), also known as Giovanni Battista Della Porta, was an Italian scholar, polymath and playwright who lived in Naples at the time of the Renaissance, Scientific Revolution and Reformation. Giambattista della Porta spent the majority of his life on scientific endeavors. He benefited from an informal education of tutors and visits from renowned scholars. His most famous work, first published in 1558, is entitled '' Magia Naturalis (Natural Magic).'' In this book he covered a variety of the subjects he had investigated, including occult philosophy, astrology, alchemy, mathematics, meteorology, and natural philosophy. He was also referred to as "professor of secrets". Childhood Giambattista della Porta was born at Vico Equense, near Naples, to the nobleman Nardo Antonio della Porta. He was the third of four sons and the second to survive childhood, having an older brother Gian Vincenzo and a younger brother Gian Ferrante.Giambatti ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Roger Bacon
Roger Bacon (; la, Rogerus or ', also '' Rogerus''; ), also known by the scholastic accolade ''Doctor Mirabilis'', was a medieval English philosopher and Franciscan friar who placed considerable emphasis on the study of nature through empiricism. In the early modern era, he was regarded as a wizard and particularly famed for the story of his mechanical or necromantic brazen head. He is sometimes credited (mainly since the 19th century) as one of the earliest European advocates of the modern scientific method, along with his teacher Robert Grosseteste. Bacon applied the empirical method of Ibn al-Haytham (Alhazen) to observations in texts attributed to Aristotle. Bacon discovered the importance of empirical testing when the results he obtained were different from those that would have been predicted by Aristotle. His linguistic work has been heralded for its early exposition of a universal grammar, and 21st-century re-evaluations emphasise that Bacon was essentially a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Isis (journal)
''Isis'' is a quarterly peer-reviewed academic journal published by the University of Chicago Press. It covers the history of science, history of medicine, and the history of technology, as well as their cultural influences. It contains original research articles and extensive book reviews and review essays. Furthermore, sections devoted to one particular topic are published in each issue in open access. These sections consist of the Focus section, the Viewpoint section and the Second Look section. History The journal was established by George Sarton and the first issue appeared in March 1913. Contributions were originally in any of four European languages (English, French, German, and Italian), but since the 1920s, only English has been used. Publication is partly supported by an endowment from the Dibner Fund. Two associated publications are ''Osiris'' (established 1936 by Sarton) and the ''Isis Current Bibliography''. The publication of the journal was interrupted in 1914 by ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Book Of Optics
The ''Book of Optics'' ( ar, كتاب المناظر, Kitāb al-Manāẓir; la, De Aspectibus or ''Perspectiva''; it, Deli Aspecti) is a seven-volume treatise on optics and other fields of study composed by the medieval Arab scholar Ibn al-Haytham, known in the West as Alhazen or Alhacen (965–c. 1040 AD). The ''Book of Optics'' presented experimentally founded arguments against the widely held extramission theory of vision (as held by Euclid in his ''Optica''), and proposed the modern intromission theory, the now accepted model that vision takes place by light entering the eye.D. C. Lindberg (1976), ''Theories of Vision from al-Kindi to Kepler'', Chicago, Univ. of Chicago Press The book is also noted for its early use of the scientific method, its description of the camera obscura, and its formulation of Alhazen's problem. The book extensively affected the development of optics, physics and mathematics in Europe between the 13th and 17th centuries. Vision theory ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ibn Al-Haytham
Ḥasan Ibn al-Haytham, Latinized as Alhazen (; full name ; ), was a medieval mathematician, astronomer, and physicist of the Islamic Golden Age from present-day Iraq.For the description of his main fields, see e.g. ("He is one of the principal Arab mathematicians and, without any doubt, the best physicist.") , ("Ibn al-Ḥaytam was an eminent eleventh-century Arab optician, geometer, arithmetician, algebraist, astronomer, and engineer."), ("Ibn al-Haytham (d. 1039), known in the West as Alhazan, was a leading Arab mathematician, astronomer, and physicist. His optical compendium, Kitab al-Manazir, is the greatest medieval work on optics.") Referred to as "the father of modern optics", he made significant contributions to the principles of optics and visual perception in particular. His most influential work is titled '' Kitāb al-Manāẓir'' (Arabic: , "Book of Optics"), written during 1011–1021, which survived in a Latin edition. Ibn al-Haytham was an early prop ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ibn Sahl (mathematician)
Ibn Sahl (full name: ''Abū Saʿd al-ʿAlāʾ ibn Sahl'' ; c. 940–1000) was a Persian mathematician and physicist of the Islamic Golden Age, associated with the Buyid court of Baghdad. Nothing in his name allows us to glimpse his country of origin. He is known to have written an optical treatise around 984. The text of this treatise was reconstructed by Roshdi Rashed from two manuscripts (edited 1993).: Damascus, al-Ẓāhirīya MS 4871, 3 fols., and Tehran, Millī MS 867, 11 fols. The Tehran manuscript is much longer, but it is badly damaged, and the Damascus ms. contains a section missing entirely from the Tehran ms. The Damascus ms. has the title ''Fī al-'āla al-muḥriqa'' "On the burning instruments", the Tehran ms. has a title added in a later hand ''Kitāb al-harrāqāt'' "The book of burners". Ibn Sahl is the first Muslim scholar known to have studied Ptolemy's ''Optics'', and as such an important precursor to the '' Book of Optics'' by Ibn Al-Haytham (Alhazen), ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Constantinople
la, Constantinopolis ota, قسطنطينيه , alternate_name = Byzantion (earlier Greek name), Nova Roma ("New Rome"), Miklagard/Miklagarth (Old Norse), Tsargrad ( Slavic), Qustantiniya ( Arabic), Basileuousa ("Queen of Cities"), Megalopolis ("the Great City"), Πόλις ("the City"), Kostantiniyye or Konstantinopolis ( Turkish) , image = Byzantine Constantinople-en.png , alt = , caption = Map of Constantinople in the Byzantine period, corresponding to the modern-day Fatih district of Istanbul , map_type = Istanbul#Turkey Marmara#Turkey , map_alt = A map of Byzantine Istanbul. , map_size = 275 , map_caption = Constantinople was founded on the former site of the Greek colony of Byzantion, which today is known as Istanbul in Turkey. , coordinates = , location = Fatih, İstanbul, Turkey , region = Marmara Region , type = Imperial city , part_of = , length = , width ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Vitalian (general)
Vitalian ( la, Flavius Vitalianus, gr, Βιταλιανός; died 520) was a general of the Eastern Roman Empire. A native of Moesia in the northern Balkans, and probably of mixed Roman and Gothic or Scythian barbarian descent, he followed his father into the imperial army, and by 513 had become a senior commander in Thrace. In that year he rebelled against Emperor Anastasius I (r. 491–518), whose fiscal stringency and promotion of Miaphysitism were widely unpopular, and allowed Vitalian to quickly win over large parts of the army and the people of Thrace to his cause. After scoring a series of victories over loyalist armies, Vitalian came to threaten Constantinople itself, and forced Anastasius to officially recant his adoption of Miaphysitism in summer 515. Soon after, however, as Anastasius failed to honour some of the terms of the agreement, Vitalian marched on Constantinople, only to be decisively defeated by Anastasius' admiral, Marinus. Vitalian fled to his native Thr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Anthemius Of Tralles
Anthemius of Tralles ( grc-gre, Ἀνθέμιος ὁ Τραλλιανός, Medieval Greek: , ''Anthémios o Trallianós''; – 533 558) was a Greek from Tralles who worked as a geometer and architect in Constantinople, the capital of the Byzantine Empire. With Isidore of Miletus, he designed the Hagia Sophia for Justinian I. Life Anthemius was one of the five sons of Stephanus of Tralles, a physician. His brothers were Dioscorus, Alexander, Olympius, and Metrodorus. Dioscorus followed his father's profession in Tralles; Alexander did so in Rome and became one of the most celebrated medical men of his time; Olympius became a noted lawyer; and Metrodorus worked as a grammarian in Constantinople. Anthemius was said to have annoyed his neighbor Zeno in two ways: first, by engineering a miniature earthquake by sending steam through leather tubes he had fixed among the joists and flooring of Zeno's parlor while he was entertaining friends and, second, by sim ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
