Information about Theodosius Of Bithynia
Theodosius of Bithynia (ca. 160 BC–ca. 100 BC) was a Greek astronomer and mathematician who wrote the Sphaerics, a book on the geometry of the sphere. Born in Tripolis, in Bithynia, Theodosius is cited by Vitruvius as having invented a sundial suitable for any place on Earth. His Sphaerics provided the mathematics for spherical astronomy, and may have been based on a work by Eudoxus of Cnidus. Francesco Maurolico translated his works in the 16th century. In addition to the Sphaerics, two other works by Theodosius have survived: On Habitations, describing the appearances of the heavens at different climes, and On Days and Nights, a study of the apparent motion of the Sun.
Eudoxus of Cnidus (Greek Εύδοξος) (410 or 408 BC – 355 or 347 BC) was a Greek astronomer, mathematician, physician, scholar and student of Plato.
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References
- Ivor Bulmer-Thomas, "Theodosius of Bithynia," Dictionary of Scientific Biography 13:319-320.
2nd century BC - 1st century BC
190s BC 180s BC 170s BC - 160s BC - 150s BC 140s BC 130s BC
163 BC 162 BC 161 BC - 160 BC - 159 BC 158 BC 157 BC
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190s BC 180s BC 170s BC - 160s BC - 150s BC 140s BC 130s BC
163 BC 162 BC 161 BC - 160 BC - 159 BC 158 BC 157 BC
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1st century BC - 1st century
130s BC 120s BC 110s BC - 100s BC - 90s BC 80s BC 70s BC
103 BC 102 BC 101 BC - 100 BC - 99 BC 98 BC 97 BC
Politics
State leaders - Sovereign states
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130s BC 120s BC 110s BC - 100s BC - 90s BC 80s BC 70s BC
103 BC 102 BC 101 BC - 100 BC - 99 BC 98 BC 97 BC
Politics
State leaders - Sovereign states
Birth and death categories
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17,000,000
Regions with significant populations
Greece [1]
United States
Cyprus
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Regions with significant populations
Greece [1]
United States
Cyprus
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Bithynia was an ancient region, kingdom and Roman province in the northwest of Asia Minor, adjoining the Propontis, the Thracian Bosporus and the Euxine (today Black Sea).
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Description
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Marcus Vitruvius Pollio (born ca. 80/70 BC?; died ca. 25 BC) was a Roman writer, architect and engineer (possibly praefectus fabrum or architectus armamentarius of the apparitor status group), active in the 1st century BC.
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sundial is a device that measures time by the position of the Sun. The most commonly seen designs, such as the 'ordinary' or standard garden sundial, cast a shadow on a flat surface marked with the hours of the day.
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Spherical astronomy or positional astronomy is the branch of astronomy that is used to determine the location of objects on the celestial sphere, as seen at a particular date, time, and location on the Earth. This is one of the oldest branches of astronomy.
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Another article concerns Eudoxus of Cyzicus.
Eudoxus of Cnidus (Greek Εύδοξος) (410 or 408 BC – 355 or 347 BC) was a Greek astronomer, mathematician, physician, scholar and student of Plato.
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Francesco Maurolico (in Latin, Franciscus Maurolycus; September 16, 1494-July 21 or July 22, 1575) was an Italian mathematician and astronomer. Throughout his lifetime, he made contributions to the fields of geometry, optics, conics, mechanics, music, and astronomy.
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As a means of recording the passage of time, the 16th century was that century which lasted from 1501 through 1600.
See also: 16th century in literature
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See also: 16th century in literature
Events
1500s
- 1500s: Mississippian culture disappears.
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The seven climes (klima, plural klimata, meaning "inclination", referring to the angle between the axis of the celestial sphere and the horizon) was a notion of dividing the Earth into zones in Classical Antiquity.
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Ivor Bulmer-Thomas CBE FSA, originally Ivor Thomas (30 November 1905 – 7 October 1993) was a British journalist and author who served eight years as a Member of Parliament.
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