Christoph Grienberger
Encyclopedia
Christoph Grienberger (also variously spelled Gruemberger, Bamberga, Bamberger, Banbergiera, Gamberger, Ghambergier, Granberger, Panberger) (July 2, 1561-March 11, 1636) was an Austria
Austria
Austria , officially the Republic of Austria , is a landlocked country of roughly 8.4 million people in Central Europe. It is bordered by the Czech Republic and Germany to the north, Slovakia and Hungary to the east, Slovenia and Italy to the south, and Switzerland and Liechtenstein to the...

n Jesuit astronomer
Astronomy
Astronomy is a natural science that deals with the study of celestial objects and phenomena that originate outside the atmosphere of Earth...

, after whom the crater Gruemberger on the Moon
Moon
The Moon is Earth's only known natural satellite,There are a number of near-Earth asteroids including 3753 Cruithne that are co-orbital with Earth: their orbits bring them close to Earth for periods of time but then alter in the long term . These are quasi-satellites and not true moons. For more...

 is named.

Biography

Born in Hall in Tirol
Hall in Tirol
Hall in Tirol is a town in the Innsbruck-Land district of Tyrol, Austria. Located at an altitude of 574 m, about 5 km east of the state's capital Innsbruck in the Inn valley, it has a population of about 12,700 .-History:...

, in 1580 Christoph Grienberger joined the Jesuits. He studied in Prague
Prague
Prague is the capital and largest city of the Czech Republic. Situated in the north-west of the country on the Vltava river, the city is home to about 1.3 million people, while its metropolitan area is estimated to have a population of over 2.3 million...

 and Vienna
Vienna
Vienna is the capital and largest city of the Republic of Austria and one of the nine states of Austria. Vienna is Austria's primary city, with a population of about 1.723 million , and is by far the largest city in Austria, as well as its cultural, economic, and political centre...

, and subsequently succeeded his tutor, Christopher Clavius
Christopher Clavius
Christopher Clavius was a German Jesuit mathematician and astronomer who was the main architect of the modern Gregorian calendar...

, as professor of mathematics
Mathematics
Mathematics is the study of quantity, space, structure, and change. Mathematicians seek out patterns and formulate new conjectures. Mathematicians resolve the truth or falsity of conjectures by mathematical proofs, which are arguments sufficient to convince other mathematicians of their validity...

 at the Collegio Romano.

In 1610, Jesuit and high church officials had turned to Grienberger, as well as Clavius, Paolo Lembo, and Odo van Maelcote, the other mathematicians on the faculty of the Collegio Romano, for their opinion on the new phenomena Galileo had discovered with his telescope
Telescope
A telescope is an instrument that aids in the observation of remote objects by collecting electromagnetic radiation . The first known practical telescopes were invented in the Netherlands at the beginning of the 1600s , using glass lenses...

. Grienberger sympathized with Galileo's theory of motion. However, he was asked to defend the Aristotelian
Aristotle
Aristotle was a Greek philosopher and polymath, a student of Plato and teacher of Alexander the Great. His writings cover many subjects, including physics, metaphysics, poetry, theater, music, logic, rhetoric, linguistics, politics, government, ethics, biology, and zoology...

 view of the universe by Claudio Acquaviva
Claudio Acquaviva
Claudio Acquaviva was an Italian Jesuit priest elected in 1581 the 5th Superior General of the Society of Jesus...

, the Father General of the Jesuits.

Grienberger was not a prolific author –in his lifetime, his name was attached only to a thin volume of star-charts
Star chart
A star chart is a map of the night sky. Astronomers divide these into grids to use them more easily. They are used to identify and locate astronomical objects such as stars, constellations and galaxies. They have been used for human navigation since time immemorial...

 and a set of trigonometric tables
Trigonometry
Trigonometry is a branch of mathematics that studies triangles and the relationships between their sides and the angles between these sides. Trigonometry defines the trigonometric functions, which describe those relationships and have applicability to cyclical phenomena, such as waves...

- but he occupied a post that allowed him to review and evaluate the works of many other authors. As technical censor
Censorship
thumb|[[Book burning]] following the [[1973 Chilean coup d'état|1973 coup]] that installed the [[Military government of Chile |Pinochet regime]] in Chile...

 of all mathematical works written by Jesuit authors, Grienberger often sent authors his own corrections and calculations, which he recommended that they incorporate before their works could be published. His contemporaries acknowledged their debt to him. Mario Bettinus
Mario Bettinus
Mario Bettinus was an Italian Jesuit philosopher, mathematician and astronomer. The lunar crater Bettinus was named after him by Giovanni Riccioli in 1651. His Apiaria Universae Philosophiae Mathematicae is an encyclopedic collection of mathematical curiosities...

, author of Apiaria Universae Philosophiae Mathematicae, an encyclopedic collection of mathematical curiosities, includes in this text the following confession: "I have benefited, my Reader, from the mind and industry of the very learned and exceedingly modest man, Grienberger, who, while he would have discovered many marvellous things by himself, preferred to make himself serviceable to other people's inventions and other people's praises".http://www.stanford.edu/group/shl/Eyes/modesty/index.htm

Giuseppe Biancani
Giuseppe Biancani
Giuseppe Biancani was an Italian Jesuit astronomer, mathematician, and selenographer, after whom the crater Blancanus on the Moon is named...

 also corresponded with Grienberger, with whom he discussed his doubts over Galileo's assertion that there were mountains on the moon
Moon
The Moon is Earth's only known natural satellite,There are a number of near-Earth asteroids including 3753 Cruithne that are co-orbital with Earth: their orbits bring them close to Earth for periods of time but then alter in the long term . These are quasi-satellites and not true moons. For more...

.

Grienberger's lectures in astronomy had also prepared fellow Jesuits for missionary work in China
China
Chinese civilization may refer to:* China for more general discussion of the country.* Chinese culture* Greater China, the transnational community of ethnic Chinese.* History of China* Sinosphere, the area historically affected by Chinese culture...

. He also worked in the field of optics
Optics
Optics is the branch of physics which involves the behavior and properties of light, including its interactions with matter and the construction of instruments that use or detect it. Optics usually describes the behavior of visible, ultraviolet, and infrared light...

.

Grienberger is buried at Rome.

Sources

Michael John Gorman, "Mathematics and Modesty in the Society of Jesus: the Problems of Christoph Grienberger (1564-1636)" Abstract of Franz Daxecker, “The astronomer Christoph Grienberger and the Galilei trial,” Acta Historica Astronomiae, vol. 18, p. 34-39 The Galileo Project: Collegio Romano

External links


See also

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