For other people named Johannes Campanus, see Campanus. Campanus was a thirteenth century astrologer and mathematician who devised a house system for the horoscope, which bears his name. ...

Johannes Campanus (in Italian, Giovanni Campano; also known as Campanus of Novara or similar) (1220-1296) was an Italian astrologer, astronomer, and mathematician who devised a house system for the horoscope which bears his name. This house system divides the prime vertical into equal 30° arcs, or houses. Centuries: 12th century - 13th century - 14th century Decades: 1170s 1180s 1190s 1200s 1210s - 1220s - 1230s 1240s 1250s 1260s 1270s Years: 1215 1216 1217 1218 1219 - 1220 - 1221 1222 1223 1224 1225 See also: 1220 state leaders The world in 1220 Middle Ages in Europe Fifth Crusade (1217-1221) Events Mongols... Events March 30 - Edward I stormed Berwick-upon-Tweed, sacking the then Scottish border town with much bloodshed. ... An astrologer, in modern times, is a person who practices a form or forms of astrology; in earlier times, they were observer of the stars. ... An astronomer or astrophysicist is a scientist whose area of research is astronomy or astrophysics. ... Leonhard Euler is considered by many people to be one of the greatest mathematicians of all time A mathematician is a person whose primary area of study and research is mathematics. ... This 18th century Icelandic manuscript drawing shows the twelve astrological houses with signs for the locations of the planets, the sun and the moon. ... In astrology, a horoscope is a chart or diagram representing the positions of the planets, other celestial bodies, and sensitive angles at the time of any event, such as a persons birth. ... In astronomy and astrology, the prime vertical is the vertical circle passing east and west through the zenith, and intersecting the horizon in its east and west points. ...

Born in Novara, he served as chaplain to Pope Urban IV and personal physician to Pope Boniface VIII. He travelled to Arabia and Spain. Novara is a city of northwest Italy, to the west of Milan. ... Urban IV, born Jacques Pantaléon (Troyes, ca. ... Boniface VIII, né Benedetto Caetani (Anagni, ca. ... The Arabian Peninsula The Arabian Peninsula is a mainly desert peninsula in Southwest Asia at the junction of Africa and Asia and an important part of the greater Middle East. ...

In 1260, Campanus published a Latin edition of Euclid's Elementa geometriae, in fifteen books. The work was based on an Arabic translation of the original Greek text. Campanus probably also had access to the Latin translation of Euclid's work executed around 1120 by Adelard of Bath. It was used for two centuries and was printed in Venice in 1482 as Preclarissimus liber elementorum Euclidis. Events End of the reign of Emperor Go-Fukakusa of Japan Emperor Kameyama ascends to the throne of Japan September 3 - Mongols defeated by Mameluks at Battle of Ain Jalut Samogatians and Curonians defeats Teutonic knights in Battle of Durbe Births Maximus Planudes, Byzantine grammarian and theologian Deaths Monarchs/Presidents... It has been suggested that History of the Latin language be merged into this article or section. ... Euclid Euclid of Alexandria (Greek: ) (ca. ... The frontispiece of Sir Henry Billingsleys first English version of Euclids Elements, 1570 Euclids Elements (Greek: ) is a mathematical and geometric treatise, consisting of 13 books, written by the Hellenistic mathematician Euclid in Egypt during the early 3rd century BC. It comprises a collection of definitions, postulates... Arabic can mean: From or related to Arabia From or related to the Arabs The Arabic language; see also Arabic grammar The Arabic alphabet, used for expressing the languages of Arabic, Persian, Malay ( Jawi), Kurdish, Panjabi, Pashto, Sindhi and Urdu, among others. ... Events Welcher of Malvern creates a system of measurement for the earth using degrees, minutes, and seconds of latitude and longitude. ... Adelard of Bath was a 12th century English scholar. ... Venice (Italian: Venezia, Venetian: Venexia) , the city of canals, is the capital of the region of Veneto and of the province of Venice in Italy. ... Events Portuguese fortify Fort Elmina on the Gold Coast Tizoc rules the Aztecs Diogo Cão, a Portuguese navigator, becomes the first European to sail up the Congo. ...

In the field of astronomy, he wrote a Theorica Planetarum in which he geometrically described the motions of the planets as well as their longitude. He also included instructions on building a planetarium as well as its geometrical description. This was the first description of a planetarium by a European. Campanus also attempted to determine the time of each planet's retrograde motion. The data on planets are drawn from the Almagest and the Toledan Tables of the Arab astronomer Arzachel. Campanus gave precise instructions on using the tables, and made detailed calculations of the distances to the planets and their sizes. A planet is generally considered to be a relatively large mass of accreted matter in orbit around a star that is not a star itself. ... Longitude, sometimes denoted by the Greek letter λ, describes the location of a place on Earth east or west of a north-south line called the Prime Meridian. ... A planetarium is a theater built primarily for presenting educational and entertaining shows about astronomy and the night sky, or for training in celestial navigation. ... This article is about the continent. ... This article is about retrograde motion. ... Almagest is the Latin form of the Arabic name (al-kitabu-l-mijisti, i. ... Gerard of Cremona (1114–1187) edited for Latin readers the Tables of Toledo (Toledan Tables), the most accurate compilation of astronomical data ever seen in Europe at the time. ... For other meanings, see Arzachel (disambiguation) Al-Zarqali (in full Abu Ishaq Ibrahim ibn Yahya Al-Zarqali, Arzachel to Latin Europe), (1028–1087 CE), was a leading Arab mathematician and the foremost astronomer of his time. ...

Campanus also wrote Tractatus de Sphaera, De computo ecclesiastico and Calendarium.

His De computo ecclesiastico or Computus maior (ca. 1261-ca. 1264) was written by Campanus for Pope Urban VI does not make any reference to a mechanical clock, thereby leading historians to believe that the clock was not invented until 1280 or so.[1] Urban VI, born Bartolomeo Prignano (Naples 1318 – Rome October 15, 1389), Pope from 1378 to 1389, was a devout monk and learned casuist, trained at Avignon. ... A pendulum clock uses a pendulum as its time base. ... For broader historical context, see 1280s and 13th century. ...

His contemporary Roger Bacon cited Campanus as one of the great mathematicians of the age. Statue of Roger Bacon in the Oxford University Museum Roger Bacon (c. ...

He died at Viterbo. Viterbo is an ancient city and comune in the Lazio region of central Italy, the capital of Viterbo province. ...

Campanus crater, on the Moon, is named after him. Campanus is a lunar impact crater that is located on the southwestern edge of Mare Nubium. ... Bulk composition of the moons mantle and crust estimated, weight percent Oxygen 42. ...

Sources

• Campanus of Novara
• W.P. Watson Books
• Clockmakers' Gallery