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Magic Lantern
The magic lantern, also known by its Latin name , is an early type of image projector that uses pictures—paintings, prints, or photographs—on transparent plates (usually made of glass), one or more lens (optics), lenses, and a light source. Because a single lens inverts an image projected through it (as in the phenomenon which inverts the image of a camera obscura), slides are inserted upside down in the magic lantern, rendering the projected image correctly oriented. It was mostly developed in the 17th century and commonly used for entertainment purposes. It was increasingly used for education during the 19th century. Since the late 19th century, smaller versions were also mass-produced as toys. The magic lantern was in wide use from the 18th century until the mid-20th century when it was superseded by a compact version that could hold many 35 mm photographic slides: the slide projector. Technology Apparatus The magic lantern used a concave mirror behind a light so ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lumen (unit)
The lumen (symbol: lm) is the SI unit of luminous flux, which quantifies the perceived power of visible light emitted by a source. Luminous flux differs from power (radiant flux), which encompasses all electromagnetic waves emitted, including non-visible ones such as thermal radiation (infrared). By contrast, luminous flux is weighted according to a model (a " luminosity function") of the human eye's sensitivity to various wavelengths; this weighting is standardized by the CIE and ISO. The lumen is defined as equivalent to one candela-steradian (symbol cd·sr): : 1 lm = 1 cd·sr. A full sphere has a solid angle of 4π steradians (≈ 12.56637 sr), so an isotropic light source (that uniformly radiates in all directions) with a luminous intensity of one candela has a total luminous flux of :. One lux is one lumen per square metre. Explanation If a light source emits one candela of luminous intensity uniformly across a solid angle of one steradian, the total luminous flux e ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Martino Martini
Martino Martini (20 September 1614 – 6 June 1661) was a Jesuit China missions, Jesuit missionary born and raised in Trento (now in Italy, then a Prince-Bishopric of Trent, Prince-Bishopric of the Holy Roman Empire). As a cartographer and historian, he mainly worked on ancient Chinese Empire, Imperial China. Early years Martini was born in Trento, in the Prince-Bishopric of Trent, Bishopric of Trent, Holy Roman Empire. After finishing high school in Trento in 1631, he joined the Society of Jesus, continuing his studies of classical literature and philosophy at the Roman College in Rome (1634–1637). However, his main interest was astronomy and mathematics, which he studied under the supervision of Athanasius Kircher. His request to undertake missionary work in China was eventually approved by Mutius Vitelleschi, the then Superior General of the Jesuits. He pursued his theological studies in Portugal (1637–1639), where he was ordained priest (1639, in Lisbon). In the Chinese ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
André Tacquet
André Tacquet (; 23 June 1612 Antwerp – 22 December 1660 Antwerp, also referred to by his Latinized name Andrea Tacquet) was a Brabantian mathematician and Jesuit priest. Tacquet adhered to the methods of the geometry of Euclid and the philosophy of Aristotle and opposed the method of indivisibles. Life André Tacquet was born in Antwerp, and entered the Jesuit Order in 1629. From 1631 to 1635, he studied mathematics, physics and logic at Leuven. Two of his teachers were Grégoire de Saint-Vincent and Francois d'Aguilon. Tacquet became a brilliant mathematician of international fame and his works were often reprinted and translated (into Italian and English). His most famous work, which influenced the thinking of Blaise Pascal and his contemporaries, is ''Cylindricorum et annularium'' (1651). In this book Tacquet presented how a moving point could generate a curve and the theories of area and volume. He died in Antwerp. In honor of André Tacquet, his name has bee ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ars Magna Lucis Et Umbrae
''Ars Magna Lucis et Umbrae'' ("The Great Art of Light and Shadow") is a 1645 work by the Jesuit scholar Athanasius Kircher. It was dedicated to Ferdinand IV, King of the Romans and published in Rome by Lodovico Grignani. A second edition was published in Amsterdam in 1671 by Johann Jansson. ''Ars Magna'' was the first description published in Europe of the illumination and projection of images. The book contains the first printed illustration of Saturn and the 1671 edition also contained a description of the magic lantern. ''Ars magna lucis et umbrae'' followed soon after Kircher's work on magnetism, ''Magnes sive de Arte Magnetica'' (1641) and the title was a play on words. In his introduction Kircher notes that the word 'magna' alluded to the powers of the magnet, so that the title could also be read "The Magnetic Art of Light and Shadow". The work was well known for several decades. Content ''Ars Magna'' is the first of Kircher's works to follow a symbolic structure. It cons ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Athanasius Kircher
Athanasius Kircher (2 May 1602 – 27 November 1680) was a German Society of Jesus, Jesuit scholar and polymath who published around 40 major works of comparative religion, geology, and medicine. Kircher has been compared to fellow Jesuit Roger Joseph Boscovich and to Leonardo da Vinci for his vast 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 or cabinet of curiosities that would become the Kircherian Museum. A resurgence of interest in Kircher has occurred within the scholarly community in recent decades. Kircher claimed to have deciphered the Egyptian hieroglyphs, hieroglyphic writing of the ancient Egyptian language, but most of his assumptions and translations in the field turned out to be wrong. He did, however, correctly establish the link between the ancient Egyptian and the Coptic language, Coptic languages, and some com ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1645 Kircher - Steganographia
Events January–March * January 3 – The Long Parliament adopts the ''Directory for Public Worship'' in England, Wales, Ireland and Scotland, replacing the Book of Common Prayer ( 1559). Holy Days (other than Sundays) are not to be observed. * January 10 – Archbishop of Canterbury William Laud is executed for treason on Tower Hill, London. * January 14 – English Civil War: Thomas Fairfax is appointed Commander-in-Chief of the Parliamentarians. * January 29 – English Civil War: Armistice talks open at Uxbridge. * February 2 – Battle of Inverlochy: The Scottish Covenanters are defeated by Montrose. * February 15 – English Civil War: The New Model Army is officially founded. * February 28 – English Civil War: The Uxbridge armistice talks fail. * March 4 – English Civil War: Prince Rupert leaves Oxford for Bristol. * March 5 – Thirty Years' War – Battle of Jankau: The armies of Sweden decisively defeat the f ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gaspar Schott
Gaspar Schott (German language, German: ''Kaspar'' (or ''Caspar'') ''Schott''; Latin: ''Gaspar Schottus''; 5 February 1608 – 22 May 1666) was a Germans, German Jesuit and scientist, specializing in the fields of physics, mathematics and natural philosophy, and known for his industry. Biography He was born at Bad Königshofen im Grabfeld. It is probable, but not certain, that his early education was at the Jesuit College at Würzburg. In any case, at the age of 19 he joined the Society of Jesus, entering the novitiate at Trier on 30 October 1627. After two years of novitiate training, he matriculated at the University of Würzburg on 6 November 1629 to begin a three-year study of Philosophy, following the normal academic path prescribed for Jesuit seminarians. Owing to the Swedish invasion of Würzburg in October 1631, the Jesuit community fled the city. Schott went, first to the Jesuit seminary of Tournai in Belgium, and subsequently, in 1633, to Caltagirone in Sicily, where he ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Constantijn Huygens
Sir Constantijn Huygens, Lord of Zuilichem ( , , ; 4 September 159628 March 1687), was a Dutch Golden Age poet and composer. He was also secretary to two Princes of Orange: Frederick Henry and William II, and the father of the scientist Christiaan Huygens. Biography Constantijn Huygens was born in The Hague, the second son of Christiaan Huygens (senior), secretary of the Council of State, and Susanna Hoefnagel, niece of the Antwerp painter Joris Hoefnagel. Education Constantijn was a gifted child. His brother Maurits and he were educated partly by their father and partly by carefully instructed governors. When he was five years old, Constantijn and his brother received their first musical education. Music education They started with singing lessons, and they learned their notes using gold-coloured buttons on their jackets. It is striking that Christiaan senior imparted the "modern" system of 7 note names to the boys, instead of the traditional, but much more complicate ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Microscope
A microscope () is a laboratory equipment, laboratory instrument used to examine objects that are too small to be seen by the naked eye. Microscopy is the science of investigating small objects and structures using a microscope. Microscopic means being invisible to the eye unless aided by a microscope. There are many types of microscopes, and they may be grouped in different ways. One way is to describe the method an instrument uses to interact with a sample and produce images, either by sending a beam of light or electrons through a sample in its optical path, by detecting fluorescence, photon emissions from a sample, or by scanning across and a short distance from the surface of a sample using a probe. The most common microscope (and the first to be invented) is the optical microscope, which uses lenses to refract visible light that passed through a microtome, thinly sectioned sample to produce an observable image. Other major types of microscopes are the fluorescence micro ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Telescope
A telescope is a device used to observe distant objects by their emission, Absorption (electromagnetic radiation), absorption, or Reflection (physics), reflection of electromagnetic radiation. Originally, it was an optical instrument using lenses, curved mirrors, or a combination of both to observe distant objects – an optical telescope. Nowadays, the word "telescope" is defined as a wide range of instruments capable of detecting different regions of the electromagnetic spectrum, and in some cases other types of detectors. The first known practical telescopes were refracting telescopes with glass lenses and were invented in the Netherlands at the beginning of the 17th century. They were used for both terrestrial applications and astronomy. The reflecting telescope, which uses mirrors to collect and focus light, was invented within a few decades of the first refracting telescope. In the 20th century, many new types of telescopes were invented, including radio telescopes in t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cornelis Drebbel
Cornelis Jacobszoon Drebbel (; 1572 – 7 November 1633) was a Dutch engineer and inventor. He was the builder of the first operational submarine in 1620 and an innovator who contributed to the development of measurement and control systems, optics and chemistry. Biography Cornelis Drebbel was born in Alkmaar, Holland in an Anabaptist family in 1572. After some years at the Latin school in Alkmaar, around 1587, he attended the Academy in Haarlem, also located in North-Holland. Teachers at the Academy were Hendrik Goltzius, engraver, painter, alchemist and humanist, Karel van Mander, painter, writer, humanist and Cornelis Corneliszoon of Haarlem. Drebbel became a skilled engraver on copperplate and also took an interest in alchemy. In 1595 he married Sophia Jansdochter Goltzius, younger sister of Hendrick, and settled at Alkmaar. They had at least six children, of whom four survived. Drebbel worked initially as a painter, engraver and cartographer. But he was in constant need of m ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
