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Campanus Of Novara
Campanus of Novara ( 1220 – 1296) was an Italian mathematician, astronomer, astrologer, and physician who is best known for his work on Euclid's ''Elements''. In his writings he refers to himself as Campanus Nouariensis; contemporary documents refer to him as Magister Campanus; and the full style of his name is Magister Campanus Nouariensis. He is also referred to as Campano da Novara, Giovanni Campano or similar. Later authors (from the 16th century on) sometimes applied the forename Johannes Campanus or Iohannes Campanus. His date of birth is uncertain but may have been as early as the first decade of the 13th century and the place of birth was probably Novara in Piedmont. He served as chaplain to Pope Urban IV, Pope Adrian V, Pope Nicholas IV, and Pope Boniface VIII. His contemporary Roger Bacon cited Campanus as one of the two "good" (but not "perfect") mathematicians indicating that Bacon considered Campanus as excellent or one of the greatest mathematicians of their ti ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Novara
Novara (; Novarese Lombard, Novarese: ) is the capital city of the province of Novara in the Piedmont (Italy), Piedmont region in northwest Italy, to the west of Milan. With 101,916 inhabitants (on 1 January 2021), it is the second most populous city in Piedmont after Turin. It is an important crossroads for commercial traffic along the routes from Milan to Turin and from Genoa to Switzerland. Novara lies between the streams Agogna and Terdoppio in northeastern Piedmont, from Milan and from Turin. It is only distant from the river Ticino, which marks the border with Lombardy region. History Novara was founded around 89 BC by the Ancient Rome, Romans, when the local Gauls obtained Roman citizenship. Its name is formed from ''Nov'', meaning "new", and ''Aria'', the name the Cisalpine Gauls used for the surrounding region. Ancient ''Novaria'', which dates to the time of the Ligures and the Celts, was a municipium and was situated on the road from Vercellae (Vercelli) to (Mediol ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Retrograde Motion
Retrograde motion in astronomy is, in general, orbital or rotational motion of an object in the direction opposite the rotation of its primary, that is, the central object (right figure). It may also describe other motions such as precession or nutation of an object's rotational axis. Prograde or direct motion is more normal motion in the same direction as the primary rotates. However, "retrograde" and "prograde" can also refer to an object other than the primary if so described. The direction of rotation is determined by an inertial frame of reference, such as distant fixed stars. In the Solar System, the orbits around the Sun of all planets and dwarf planets and most small Solar System bodies, except many comets and few distant objects, are prograde. They orbit around the Sun in the same direction as the sun rotates about its axis, which is counterclockwise when observed from above the Sun's north pole. Except for Venus and Uranus, planetary rotations around their a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Equatorium
An equatorium (plural, equatoria) is an astronomy, astronomical Mechanical calculator, calculating instrument. It can be used for finding the positions of the Moon, Sun, and planets without arithmetic operations, using a geometrical model to represent the position of a given celestial body. History In his comment on Ptolemy's ''Handy Tables'', 4th century mathematician Theon of Alexandria introduced some diagrams to geometrically compute the position of the planets based on Ptolemy's Deferent and epicycle, epicyclical theory. The first description of the construction of a solar equatorium (as opposed to planetary) is contained in Proclus's fifth-century work ''Hypotyposis'', where he gives instructions on how to construct one in wood or bronze. The earliest known descriptions of planetary equatoria are in the Latin translation of an early eleventh century text by Ibn al‐Samḥ and a 1080/1081 treatise by Abū Isḥāq Ibrāhīm al-Zarqālī, al-Zarqālī, contained in the ' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Longitude
Longitude (, ) is a geographic coordinate that specifies the east- west position of a point on the surface of the Earth, or another celestial body. It is an angular measurement, usually expressed in degrees and denoted by the Greek letter lambda (λ). Meridians are imaginary semicircular lines running from pole to pole that connect points with the same longitude. The prime meridian defines 0° longitude; by convention the International Reference Meridian for the Earth passes near the Royal Observatory in Greenwich, south-east London on the island of Great Britain. Positive longitudes are east of the prime meridian, and negative ones are west. Because of the Earth's rotation, there is a close connection between longitude and time measurement. Scientifically precise local time varies with longitude: a difference of 15° longitude corresponds to a one-hour difference in local time, due to the differing position in relation to the Sun. Comparing local time to an absol ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Planet
A planet is a large, Hydrostatic equilibrium, rounded Astronomical object, astronomical body that is generally required to be in orbit around a star, stellar remnant, or brown dwarf, and is not one itself. The Solar System has eight planets by the most restrictive definition of the term: the terrestrial planets Mercury (planet), Mercury, Venus, Earth, and Mars, and the giant planets Jupiter, Saturn, Uranus, and Neptune. The best available theory of planet formation is the nebular hypothesis, which posits that an interstellar cloud collapses out of a nebula to create a young protostar orbited by a protoplanetary disk. Planets grow in this disk by the gradual accumulation of material driven by gravity, a process called accretion (astrophysics), accretion. The word ''planet'' comes from the Greek () . In Classical antiquity, antiquity, this word referred to the Sun, Moon, and five points of light visible to the naked eye that moved across the background of the stars—namely, Me ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Venice
Venice ( ; ; , formerly ) is a city in northeastern Italy and the capital of the Veneto Regions of Italy, region. It is built on a group of 118 islands that are separated by expanses of open water and by canals; portions of the city are linked by 438 bridges. The islands are in the shallow Venetian Lagoon, an enclosed bay lying between the mouths of the Po River, Po and the Piave River, Piave rivers (more exactly between the Brenta (river), Brenta and the Sile (river), Sile). As of 2025, 249,466 people resided in greater Venice or the Comune of Venice, of whom about 51,000 live in the historical island city of Venice (''centro storico'') and the rest on the mainland (''terraferma''). Together with the cities of Padua, Italy, Padua and Treviso, Italy, Treviso, Venice is included in the Padua-Treviso-Venice Metropolitan Area (PATREVE), which is considered a statistical metropolitan area, with a total population of 2.6 million. The name is derived from the ancient Adr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Erhard Ratdolt
Erhard Ratdolt (1442–1528) was an early German printer from Augsburg. He was active as a printer in Venice from 1476 to 1486, and afterwards in Augsburg. From 1475 to 1478 he was in partnership with two other German printers. The first book the partnership produced was the ''Calendarium'' (1476), written and previously published by Regiomontanus, which offered one of the earliest examples of a modern title page. Other noteworthy publications are the ''Historia Romana'' of Appianus (1477), and the first edition of ''Euclid's Elements'' (1482), where he solved the problem of printing geometric diagrams, the ''Poeticon astronomicon'', also from 1482, Haly Abenragel (1485), and Alchabitius (1503). Ratdolt is also famous for having produced the first known printer's type specimen book (in this instance a broadsheet displaying the fonts with which he might print). His innovations of layout and typography, mixing type and woodcuts, have subsequently been much admired. His graphic c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Letterpress Printing
Letterpress printing is a technique of relief printing for producing many copies by repeated direct impression of an inked, raised surface against individual sheets of paper or a continuous roll of paper. A worker composes and locks movable type into the "bed" or "chase" of a press, inks it, and presses paper against it to transfer the ink from the type, which creates an impression on the paper. In practice, letterpress also includes wood engravings; photo-etched zinc plates ("cuts"); linoleum blocks, which can be used alongside metal type; wood type in a single operation; stereotype (printing), stereotypes; and electrotypes of type and blocks. With certain letterpress units, it is also possible to join movable type with slug (typesetting), slugs cast using hot metal typesetting. In theory, anything that is "type high" (i.e. it forms a layer exactly 0.918 inches thick between the bed and the paper) can be printed using letterpress. Letterpress printing was the normal form of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Franz Steiner Verlag
Franz Steiner Verlag GmbH is a German academic publishing house, with headquarters in Stuttgart. Founded in 1949 in Wiesbaden, its specialty is history, although it also publishes works in geography, philosophy, law, and musicology. In 2008, the program was expanded to include nonfiction books for a wider readership. Today, the publishing house is part of the Deutscher Apotheker Verlag media group.Ohne Autor: ''Franz Steiner Verlag Stuttgart, vorm. Wiesbaden'', in: Heinz Karrasch (Hrsg.): ''Geographie. Tradition und Fortschritt. Festschrift zum 50-jährigen Bestehen der Heidelberger Geographischen Gesellschaft'', Heidelberg 1998, S. 341. Journals published by Franz Steiner include '' Historia'', '' Geographische Zeitschrift'', ''Hermes Hermes (; ) is an Olympian deity in ancient Greek religion and mythology considered the herald of the gods. He is also widely considered the protector of human heralds, travelers, thieves, merchants, and orators. He is able to mo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Anaritius
Abū’l-'Abbās al-Faḍl ibn Ḥātim al-Nairīzī (; ; , ) was a Persian mathematician and astronomer from Nayriz, now in Fars province, Iran. Life Little is known of al-Nairīzī, though his nisba refers to the town of Neyriz. He mentioned al-Mu'tadid, the Abbasid caliph, in his works, and so scholars have assumed that al-Nairīzī flourished in Baghdad during this period. Al-Nairīzī wrote a book for al-Mu'tadid on atmospheric phenomena. He died in . Mathematics Al-Nayrizi wrote a commentary to the translation in Arabic by Al-Ḥajjāj ibn Yūsuf ibn Maṭar of Euclid's ''Elements''. Both the translation and the commentary have survived, as well as a 12th-century Latin translation by Gerard of Cremona. Al-Nayrizi's commentary contains unique extracts of two other commentaries on the ''Elements'', produced by Hero of Alexandria and Simplicius of Cilicia. Al-Nairīzī used the , the equivalent to the tangent, as a genuine trigonometric line, as did the Persian astronom ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Jordanus De Nemore
Jordanus de Nemore (fl. 13th century), also known as Jordanus Nemorarius and Giordano of Nemi, was a thirteenth-century European mathematician and scientist. The literal translation of Jordanus de Nemore (Giordano of Nemi) would indicate that he was an Italian. Bertrand Gille, ''Les ingénieurs de la Renaissance''. He wrote treatises on at least 6 different important mathematical subjects: the science of weights; “algorismi” treatises on practical arithmetic; pure arithmetic; algebra; geometry; and stereographic projection. Most of these treatises exist in several versions or reworkings from the Middle Ages. We know nothing about him personally, other than the approximate date of his work. Life No biographical details are known about Jordanus de Nemore. Cited in the early manuscripts simply as “Jordanus”, he was later given the sobriquet of “de Nemore” (“of the Forest,” “Forester”) which does not add any firm biographical information. In the Renaissance his ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
