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Kaspar Uttenhofer
Kaspar Uttenhofer (1588 – 31 May 1621) was a German astronomer. Life Kaspar Uttenhofer was born in Nuremberg in 1588, the seventh son of the second marriage of Georg Uttenhofer, a tailor. His father died on January 9, 1563, leaving the family in good economic conditions. One of his brothers was Anthoni Uttenhofer (1542-1609), an artist specialized in etching. His personal life is little known, according to the mathematician Daniel Schwenter, Uttenhofer devoted most of his life to improving his knowledge being self-taught. He wrote various books, the most renowned is probably the ''Pes mechanicus'' in which the author explained how to easily build a sundial. He wrote the ''Judicium de nupero Cometa astrologico-historicum'' after spotting comet (C/1618 W1) in the Boötes constellation. He died in his home city of Nuremberg in 1621. Works * ''Pes Mechanicus. Oder Werckschuh/ Das ist: Ein gar leuchte Weise/ allerley gemeine Sonnen-Uhren auß einem außgetheilten Werckschuch z ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Astronomer
An astronomer is a scientist in the field of astronomy who focuses their studies on a specific question or field outside the scope of Earth. They observe astronomical objects such as stars, planets, natural satellite, moons, comets and galaxy, galaxies – in either observational astronomy, observational (by analyzing the data) or theoretical astronomy. Examples of topics or fields astronomers study include planetary science, Sun, solar astronomy, the Star formation, origin or stellar evolution, evolution of stars, or the galaxy formation and evolution, formation of galaxies. A related but distinct subject is physical cosmology, which studies the Universe as a whole. Types Astronomers usually fall under either of two main types: observational astronomy, observational and theoretical astronomy, theoretical. Observational astronomers make direct observations of Astronomical object, celestial objects and analyze the data. In contrast, theoretical astronomers create and investigate C ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Manfred H
''Manfred: A dramatic poem'' is a closet drama written in 1816–1817 by Lord Byron. It contains supernatural elements, in keeping with the popularity of the ghost story in England at the time. It is a typical example of a Gothic fiction. Byron commenced this work in late 1816, a few months after the famous ghost-story sessions with Percy Bysshe Shelley and Mary Shelley that provided the initial impetus for '' Frankenstein; or, The Modern Prometheus ''. The supernatural references are made clear throughout the poem. ''Manfred'' was adapted musically by Robert Schumann in 1852, in a composition entitled '' Manfred: Dramatic Poem with Music in Three Parts'', and in 1885 by Pyotr Ilyich Tchaikovsky in his ''Manfred Symphony''. Friedrich Nietzsche was inspired by the poem's depiction of a super-human being to compose a piano score in 1872 based on it, "Manfred Meditation". Background Byron wrote this "metaphysical drama", as he called it, after his marriage to Annabella Millbanke ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nuremberg
Nuremberg ( ; german: link=no, Nürnberg ; in the local East Franconian dialect: ''Nämberch'' ) is the second-largest city of the German state of Bavaria after its capital Munich, and its 518,370 (2019) inhabitants make it the 14th-largest city in Germany. On the Pegnitz River (from its confluence with the Rednitz in Fürth onwards: Regnitz, a tributary of the River Main) and the Rhine–Main–Danube Canal, it lies in the Bavarian administrative region of Middle Franconia, and is the largest city and the unofficial capital of Franconia. Nuremberg forms with the neighbouring cities of Fürth, Erlangen and Schwabach a continuous conurbation with a total population of 800,376 (2019), which is the heart of the urban area region with around 1.4 million inhabitants, while the larger Nuremberg Metropolitan Region has approximately 3.6 million inhabitants. The city lies about north of Munich. It is the largest city in the East Franconian dialect area (colloquially: "F ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Etching
Etching is traditionally the process of using strong acid or mordant to cut into the unprotected parts of a metal surface to create a design in intaglio (incised) in the metal. In modern manufacturing, other chemicals may be used on other types of material. As a method of printmaking, it is, along with engraving, the most important technique for old master prints, and remains in wide use today. In a number of modern variants such as microfabrication etching and photochemical milling it is a crucial technique in much modern technology, including circuit boards. In traditional pure etching, a metal plate (usually of copper, zinc or steel) is covered with a waxy ground which is resistant to acid. The artist then scratches off the ground with a pointed etching needle where the artist wants a line to appear in the finished piece, exposing the bare metal. The échoppe, a tool with a slanted oval section, is also used for "swelling" lines. The plate is then dipped in a bath of aci ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Daniel Schwenter
Daniel Schwenter (Schwender) (31 January 1585 – 19 January 1636) was a German Orientalist, mathematician, inventor, poet, and librarian. Biography Schwenter was born in Nuremberg. He was professor of oriental languages and mathematics at the University of Altdorf. This is achieved by a preface written by Schwenter in the book ''Kurtzer, gründtlicher, warhaffter, gebesserter und vermehrter Underricht, Zuberaitung und Gebrauch deß Circkels, Schregmeß und Linial'' from George Galgemair and by an old chronicle of the University of Altdorf. His works include ''Delicia Physico-Mathematicae'' (Nuremberg, 1636) and ''Geometriae practicae novae et auctae tractatus I-IV'' (published posthumously in 1641). Among other topics, ''Geometriae practicae'' covers the art of baculometry - the measuring of inaccessible distances via staves. As a linguist, Schwenter was familiar with Greek, Hebrew, Arabic, Syriac, and Aramaic. He was also an authority on Euclid. He died in Altdorf bei N ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sundial
A sundial is a horological device that tells the time of day (referred to as civil time in modern usage) when direct sunlight shines by the apparent position of the Sun in the sky. In the narrowest sense of the word, it consists of a flat plate (the ''dial'') and a gnomon, which casts a shadow onto the dial. As the Sun appears to move through the sky, the shadow aligns with different hour-lines, which are marked on the dial to indicate the time of day. The ''style'' is the time-telling edge of the gnomon, though a single point or ''nodus'' may be used. The gnomon casts a broad shadow; the shadow of the style shows the time. The gnomon may be a rod, wire, or elaborately decorated metal casting. The style must be parallel to the axis of the Earth's rotation for the sundial to be accurate throughout the year. The style's angle from horizontal is equal to the sundial's geographical latitude. The term ''sundial'' can refer to any device that uses the Sun's altitude or azimut ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Comet
A comet is an icy, small Solar System body that, when passing close to the Sun, warms and begins to release gases, a process that is called outgassing. This produces a visible atmosphere or coma, and sometimes also a tail. These phenomena are due to the effects of solar radiation and the solar wind acting upon the nucleus of the comet. Comet nuclei range from a few hundred meters to tens of kilometers across and are composed of loose collections of ice, dust, and small rocky particles. The coma may be up to 15 times Earth's diameter, while the tail may stretch beyond one astronomical unit. If sufficiently bright, a comet may be seen from Earth without the aid of a telescope and may subtend an arc of 30° (60 Moons) across the sky. Comets have been observed and recorded since ancient times by many cultures and religions. Comets usually have highly eccentric elliptical orbits, and they have a wide range of orbital periods, ranging from several years to potentially several mill ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
C/1618 W1
The year 1618 in science and technology involved some significant events. Astronomy * March 8 – May 15 – Johannes Kepler formulates the third law of planetary motion. * July 21 – Pluto (not known at this time) reaches an aphelion. It next comes to aphelion in 1866. * Johann Baptist Cysat, Swiss Jesuit geometer and astronomer and one of Christoph Scheiner's pupils, becomes the first to study a comet through the telescope and gives the first description of the nucleus and coma of a comet. * September 6–25 – The Great Comet of 1618 is visible to the naked eye. Biology * Fortunio Liceti's ''De spontaneo Viventium Ortu'' supports the theory of spontaneous generation of organisms. Medicine * The College of Physicians of London publishes the ''Pharmacopœia Londinensis''. ''See:'' Births * April 2 – Francesco Maria Grimaldi, Italian physicist, discoverer of the diffraction of light (died 1663) * Jeremiah Horrocks, English astronomer (died 1641) Deaths * June 6 – S ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Boötes
Boötes ( ) is a constellation in the northern sky, located between 0° and +60° declination, and 13 and 16 hours of right ascension on the celestial sphere. The name comes from la, Boōtēs, which comes from grc-gre, Βοώτης, Boṓtēs ' herdsman' or 'plowman' (literally, ' ox-driver'; from ''boûs'' 'cow'). One of the 48 constellations described by the 2nd-century astronomer Ptolemy, Boötes is now one of the 88 modern constellations. It contains the fourth-brightest star in the night sky, the orange giant Arcturus. Epsilon Boötis, or Izar, is a colourful multiple star popular with amateur astronomers. Boötes is home to many other bright stars, including eight above the fourth magnitude and an additional 21 above the fifth magnitude, making a total of 29 stars easily visible to the naked eye. History and mythology In ancient Babylon, the stars of Boötes were known as SHU.PA. They were apparently depicted as the god Enlil, who was the leader of the Babylonian ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
17th-century German Astronomers
The 17th century lasted from January 1, 1601 ( MDCI), to December 31, 1700 ( MDCC). It falls into the early modern period of Europe and in that continent (whose impact on the world was increasing) was characterized by the Baroque cultural movement, the latter part of the Spanish Golden Age, the Dutch Golden Age, the French ''Grand Siècle'' dominated by Louis XIV, the Scientific Revolution, the world's first public company and megacorporation known as the Dutch East India Company, and according to some historians, the General Crisis. From the mid-17th century, European politics were increasingly dominated by the Kingdom of France of Louis XIV, where royal power was solidified domestically in the civil war of the Fronde. The semi-feudal territorial French nobility was weakened and subjugated to the power of an absolute monarchy through the reinvention of the Palace of Versailles from a hunting lodge to a gilded prison, in which a greatly expanded royal court could be more easily k ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1588 Births
__NOTOC__ Events January–June * February – The Sinhalese abandon the siege of Colombo, capital of Portuguese Ceylon. * February 9 – The sudden death of Álvaro de Bazán, 1st Marquis of Santa Cruz, in the midst of preparations for the Spanish Armada, forces King Philip II of Spain to re-allocate the command of the fleet. * April 14 (April 4 Old Style) – Christian IV becomes king of Denmark–Norway, upon the death of his father, Frederick II. * May 12 – Day of the Barricades in Paris: Henry I, Duke of Guise seizes the city, forcing King Henry III to flee. * May 28 – The Spanish Armada, with 130 ships and 30,000 men, begins to set sail from the Tagus estuary, under the command of the Duke of Medina Sedonia and Juan Martínez de Recalde, heading for the English Channel (it will take until May 30 for all of the ships to leave port). July–December * July – King Henry III of France capitulates to the Duke of Guise, an ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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