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Philo of Byzantium
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Philo of Byzantium
Philo of Byzantium (Ancient Greek: Φίλων ὁ Βυζάντιος, romanized: Phílōn ho Byzántios, c. 280 BC – c. 220 BC), also known as Philo Mechanicus, 'Philo the Engineer' in Latin, was a Greek engineer, physicist and writer on mechanics, who lived during the latter half of the 3rd century BC. Although he was from Byzantium he lived most of his life in Alexandria, Egypt. He was probably younger than Ctesibius, though some place him a century earlier.
Philo was the author of a large work, the Syntaxis (Ancient Greek: Μηχανική Σύνταξη, romanized: Mēkhanikḗ Sýntaxē, lit. 'System of mechanics'), which contained the following sections:
The military sections Belopoeica and Poliorcetica are extant in Greek, detailing missiles, the construction of fortresses, provisioning, attack and defence, as are fragments of Isagoge and Automatopoeica (ed. R. Schone, 1893, with German translation in Hermann August Theodor Köchly's Griechische Kriegsschriftsteller, vol. i. 1853; E. A. Rochas d'Aiglun, Poliorcetique des Grecs, 1872).
Another portion of the work, on pneumatic engines, has been preserved in the form of a Latin translation (De Ingeniis Spiritualibus) of an Arabic translation (ed. W. Schmidt, with German translation, in the works of Heron of Alexandria, vol. i., in the Teubner series, 1899; with French translation by Rochas, La Science des philosophes... dans l'antiquité, 1882). Further portions probably survive in a derivative form, incorporated into the works of Vitruvius and of Arabic authors.
The Philo line, a geometric construction that can be used to double the cube, is attributed to Philo.
According to recent research, a section of Philo's Pneumatics which so far has been regarded as a later Arabic interpolation, includes the first description of a water mill in history, placing the invention of the water mill in the mid-third century BC by the Greeks.
Philo's works also contain the oldest known application of a chain drive in a repeating crossbow. Two flat-linked chains were connected to a windlass, which by winding back and forth would automatically fire the machine's arrows until its magazine was empty.
Philo also was the first to describe a gimbal: an eight-sided ink pot that could be turned any way without spilling and expose the ink on top. This was done by the suspension of the inkwell at the centre, which was mounted on a series of concentric metal rings which remained stationary no matter which way the pot turns.
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Philo of Byzantium
Philo of Byzantium (Ancient Greek: Φίλων ὁ Βυζάντιος, romanized: Phílōn ho Byzántios, c. 280 BC – c. 220 BC), also known as Philo Mechanicus, 'Philo the Engineer' in Latin, was a Greek engineer, physicist and writer on mechanics, who lived during the latter half of the 3rd century BC. Although he was from Byzantium he lived most of his life in Alexandria, Egypt. He was probably younger than Ctesibius, though some place him a century earlier.
Philo was the author of a large work, the Syntaxis (Ancient Greek: Μηχανική Σύνταξη, romanized: Mēkhanikḗ Sýntaxē, lit. 'System of mechanics'), which contained the following sections:
The military sections Belopoeica and Poliorcetica are extant in Greek, detailing missiles, the construction of fortresses, provisioning, attack and defence, as are fragments of Isagoge and Automatopoeica (ed. R. Schone, 1893, with German translation in Hermann August Theodor Köchly's Griechische Kriegsschriftsteller, vol. i. 1853; E. A. Rochas d'Aiglun, Poliorcetique des Grecs, 1872).
Another portion of the work, on pneumatic engines, has been preserved in the form of a Latin translation (De Ingeniis Spiritualibus) of an Arabic translation (ed. W. Schmidt, with German translation, in the works of Heron of Alexandria, vol. i., in the Teubner series, 1899; with French translation by Rochas, La Science des philosophes... dans l'antiquité, 1882). Further portions probably survive in a derivative form, incorporated into the works of Vitruvius and of Arabic authors.
The Philo line, a geometric construction that can be used to double the cube, is attributed to Philo.
According to recent research, a section of Philo's Pneumatics which so far has been regarded as a later Arabic interpolation, includes the first description of a water mill in history, placing the invention of the water mill in the mid-third century BC by the Greeks.
Philo's works also contain the oldest known application of a chain drive in a repeating crossbow. Two flat-linked chains were connected to a windlass, which by winding back and forth would automatically fire the machine's arrows until its magazine was empty.
Philo also was the first to describe a gimbal: an eight-sided ink pot that could be turned any way without spilling and expose the ink on top. This was done by the suspension of the inkwell at the centre, which was mounted on a series of concentric metal rings which remained stationary no matter which way the pot turns.