1. Heron Of Alexandria, Inventions, Biography, Science (1/2) Features inventions, biography and science. Includes links, photos, articles, list of his books and detailed descriptions. http://www.mlahanas.de/Greeks/HeronAlexandria.htm

Heron of Alexandria Michael Lahanas Heron von Alexandria, Biographie, Erfindungen, Wissenschaft Part 1 Heron from Alexandria (Heron Alexandrinus) was a Mathematician, Physicist and Engineer who lived in 10-70 AD but some references consider also 150 AD which is probably wrong, as in one of his works he referred to a recent eclipse which is now thought to have occurred in 13 March 62 AD. From Heron's writings it is reasonable to deduce that he taught at the Museum in Alexandria. His origin is uncertain although he wrote in Greek on the measurement of geometric figures and invented many contrivances operated by water, steam, or compressed air, including a fountain and a fire engine. Timeline: Heron of Alexandria and other ancient scientists (mainly mathematicians) from http://www-groups.dcs.st-and.ac.uk/~history/Timelines/index.html Image of Heron of Alexandria Of course this is not a real but a hypothetical portait of Heron! Known as Michanikos, the Machine Man, Heron invented the world's first steam engine, developed some sophisticated surveying tools, and crafted handy gizmos like a self-trimming oil lamp. Technically speaking, Heron's clever inventions were particularly notable for their incorporation of the sorts of self-regulating feedback control systems that form the bedrock of cybernetics; like today's toilets, his "inexhaustible goblet" regulated its own level with a floating mechanism. But what really stirred Heron's soul were novelties: pneumatic gadgets, automata, and magic theaters, one of which rolled itself before the audience on its own power, cranked through a miniature three-dimensional performance, and then made its own exit. Another staged a Dionysian mystery rite with Apollonian precision: Flames lept, thunder crashed, and miniature female Bacchantes whirled madly around the wine god on a pulley-driven turntable.

2. Heron Biography of heron of alexandria (1075) Sometimes called Hero, heron of alexandria was an important geometer and worker in mechanics. http://www-groups.dcs.st-and.ac.uk/~history/Mathematicians/Heron.html

Heron of Alexandria Born: about 10 in (possibly) Alexandria, Egypt Died: about 75 Click the picture above to see two larger pictures Previous (Chronologically) Next Biographies Index Previous (Alphabetically) Next Main index Version for printing Sometimes called Hero, Heron of Alexandria was an important geometer and worker in mechanics. Perhaps the first comment worth making is how common the name Heron was around this time and it is a difficult problem in the history of mathematics to identify which references to Heron are to the mathematician described in this article and which are to others of the same name. There are additional problems of identification which we discuss below. A major difficulty regarding Heron was to establish the date at which he lived. There were two main schools of thought on this, one believing that he lived around 150 BC and the second believing that he lived around 250 AD. The first of these was based mainly on the fact that Heron does not quote from any work later than Archimedes . The second was based on an argument which purported to show that he lived later that Ptolemy , and, since Pappus refers to Heron, before

3. Heron Of Alexandria (ca. 75 AD) -- From Eric Weisstein's World Of Scientific Bio Greek mathematician who was mainly interested in practical studies in mechanics and engineering, best known for Heron's Formula. http://scienceworld.wolfram.com/biography/Heron.html

Branch of Science Mathematicians Nationality Greek Heron of Alexandria (ca. 75 AD) Greek mathematician who was mainly interested in practical studies in mechanics and engineering. He dealt with a number of such problems in his work Dioptra. He is best known today for Proposition 1.8 of his Metrica, which is now known as Heron's formula The manuscript had been lost for centuries until a fragment was discovered in 1894, followed by a complete copy in 1896. References Dunham, W. Journey Through Genius: The Great Theorems of Mathematics. New York: Wiley, pp. 117-118, 1990.

4. Heron Of Alexandria Don't forget to visit our discussion forum!!! Hero (or Heron) of Alexandria. Hero's aeolipile. heron of alexandria was born in 75 AD. http://tmsyn.wc.ask.com/r?t=an&s=hb&uid=24312681243126812&sid=343126

5. References For Heron References for the biography of heron of alexandria. JG Smyly, Square roots in heron of alexandria, Hermathena 63 (1944), 1826. http://www-groups.dcs.st-and.ac.uk/~history/Printref/Heron.html

References for Heron of Alexandria Biography in Dictionary of Scientific Biography (New York 1970-1990). Biography in Encyclopaedia Britannica. Books: M Cantor, I (Leipzig, 1908). A G Drachmann, Ktesibios, Philon, and Heron, a Study in Ancient Pneumatics T L Heath, A history of Greek mathematics I, II (Oxford, 1931). J L Heiberg, Heronis Alexandrini Opera quae supersunt omnia (Leipzig, 1912). O Neugebauer, A history of ancient mathematical astronomy (New York, 1975). I Thomas, Selections illustrating the history of Greek mathematics II (London, 1941). Articles: Elem. Math. A G Drachmann, Fragments from Archimedes in Heron's Mechanics, Centaurus A G Drachmann, Heron and Ptolemaios, Centaurus Rev. Histoire Sci. Appl. J Hoyrup, The position of Heron's formula in the Metrica (with a note about Plato) (Italian), Boll. Storia Sci. Mat. P Keyser, A new look at Heron's "steam engine", Arch. Hist. Exact Sci. Historia Math. J G Smyly, Square roots in Heron of Alexandria, Hermathena C M Taisbak, An Archimedean proof of Heron's formula for the area of a triangle; reconstructed, Centaurus C M Taisbak, Errata: An Archimedean proof of Heron's formula for the area of a triangle; reconstructed

6. Heron Of Alexandria Heron the Mathematician Heron, (also known as Hero) was a Greek mathematician. Pneumatica (2 volumes The Pneumatica of Hero Of Alexandria http://tmsyn.wc.ask.com/r?t=an&s=hb&uid=24312681243126812&sid=343126

7. Heron Of Alexandria, Greece, Ancient History heron of alexandria Great inventor, mathematician and physicist from Alexandria, Egypt, who wrote books on mathemathics, mechanics and physics. http://tmsyn.wc.ask.com/r?t=an&s=hb&uid=24312681243126812&sid=343126

8. Heron Of Alexandria, Inventions, Biography, Science (2/2) The amphora of heron of alexandria How to turn water into wine (and vice versa) heron of alexandria described a mechanism or apparatus that made use of http://www.mlahanas.de/Greeks/HeronAlexandria2.htm

Heron of Alexandria Michael Lahanas Heron von Alexandria, Biographie, Erfindungen, Wissenschaft Part 2 Fire extinction Machine Two Piston Machine for continuous flow of water for fire extinction, probably a work of Ctesibius (c. 250 BC) that Hero improved. http://www.history.rochester.edu/steam/hero/section27.html Thunder-Making Machine Used in a theater to announce the entrances and exits of the gods. Pulling the lever opens a trap door which allows numerous brass balls to cascade down a series of shelves and onto a tin sheet. Heron's thunder-making machine resonated with deep bass tones when the balls were released. The amphora of Heron of Alexandria How to turn water into wine (and vice versa) Heron's Lamps In Hero's "Spiritalia," is a description of a lamp in which a supply of oil from a reservoir below is driven up by means of air introduced into the base by an air-pump. In another form of Hero's lamp, the oil is raised by water, introduced below the oil by means of a pipe. Knight's Mechanical Encyclopedia See: http://www.history.rochester.edu/steam/hero/section72.html

9. Heron Of Alexandria heron of alexandria, a worldrenowned mathematician was born in 65 AD in Alexandria, Egypt. http://tmsyn.wc.ask.com/r?t=an&s=hb&uid=24312681243126812&sid=343126

10. Heron Of Alexandria heron of alexandria or Hero mathematician and inventor. The dates of his birth and death are unknown; conjecture places them between the 2d cent. http://tmsyn.wc.ask.com/r?t=an&s=hb&uid=24312681243126812&sid=343126

11. Heron Of Alexandria, Greece, Ancient History heron of alexandria. Great inventor, mathematician and physicist from Alexandria, Egypt, who wrote books on mathemathics, mechanics and physics. http://www.in2greece.com/english/historymyth/history/ancient/heron_alexandria.ht

Heron of Alexandria Great inventor, mathematician and physicist from Alexandria, Egypt, who wrote books on mathemathics, mechanics and physics. Heron studied the preassure of air and steam, and built the first steamengine and toys that would spurt water, one of them known as Heron's fountain. He also developed various instruments for measuring distances and roads, and is sometimes credited with the formula that defines the area of a triangle from its sides. Other remarkable inventions of his was a fire extinguisher and a machine from which you could purchase various producs. Webmistress V.E.K. Sandels Home Who is Who in ... -Antigonos Gonatas -Antigonos Monophtalmos -Antipater -Antisthenes -Anyte -Apelles ... -Zeuxis

12. History Of Computing Heron Of Alexandria biography of heron of alexandria http://tmsyn.wc.ask.com/r?t=an&s=hb&uid=24312681243126812&sid=343126

13. Heron Of Alexandria biography of heron of alexandria http://tmsyn.wc.ask.com/r?t=an&s=hb&uid=24312681243126812&sid=343126

14. Heron Of Alexandria heron of alexandria was born in 75 AD. He is a Greek mathematician but his interests are in engineering and mechanics. He has written at least 13 works on http://alexandrias.tripod.com/hero.htm

setAdGroup('67.18.104.18'); var cm_role = "live" var cm_host = "tripod.lycos.com" var cm_taxid = "/memberembedded" Search: Lycos Tripod TV, Movie News Share This Page Report Abuse Edit your Site ... Don't forget to visit our discussion forum!!! Hero (or Heron) of Alexandria Hero's aeolipile Heron of Alexandria was born in 75 AD. He is a Greek mathematician but his interests are in engineering and mechanics. He has written at least 13 works on mathematics, mechanics and physics. His most famous work today in math is Proposition 1.8 of his Metrica, which is known as the Heron Formula He also invented the first steam turbine, called the aeolipile. At that time it was used as a toy. A hollow ball was supported on two brackets on the lid of a basin of boiling water. One bracket was hollow and conducted steam. The steam escaped from two bent pipes on the top, therefore creating a force that made it spin around. The movement of the ball was used to make puppets dance. Although it was very simple, Hero's aeolipile illustrated the scientific principle for Sir Isaac Newton's third law of motion which states that for every action there is an equal and opposite reaction. Hero's steam engine helped a great deal with the development of the jet engine. Even though Hero invented many useful items and discovered many math formulas

15. Heron's Formula From MathWorld (2) Heron's formula may be stated beautifully using a CayleyMenger determinant as (3) Another highly symmetrical form is given by (4) http://tmsyn.wc.ask.com/r?t=an&s=hb&uid=24312681243126812&sid=343126

16. Heron Of Alexandria biography of heron of alexandria. Heron, or Hiero, was a scientist and inventor in Alexandria. Heron wrote many books on mathematics, physics, geometry, http://www.thocp.net/biographies/heron_alexandria.html

Heron of Alexandria c 152 BC, Alexandria c 82 BC, Egypt? principal papers hardware software keywords hydraulics, steam engine, mathematics see also Related Subjects Achievement Heron, or Hiero, was a scientist and inventor in Alexandria. Heron wrote many books on mathematics, physics, geometry, and mechanics. The 'Pneumatica' describes mechanical devices operated by compressed air, water or steam, such as a fire engine, a water organ, and the aeolipile, which is the first steam-powered engine. His device consisted of a sphere mounted on a boiler by an axial shaft and having two canted nozzles to produce a rotary motion from the escaping steam. The later steam engines of the 18th century were partly based on this design. Biography Chronology Honors and awards Last Updated on June 18, 2001 For suggestions please mail the editors

17. TMTh HERO OF ALEXANDRIA Life Hero of Alexandria was a celebrated mathematician, physicist and engineer who lived in the 1st century BC. He set up and directed the Higher http://tmsyn.wc.ask.com/r?t=an&s=hb&uid=24312681243126812&sid=343126

18. History Of Computing Heron Of Alexandria biography of heron of alexandria. heron of alexandria. c 152, Alexandria c 82 BC Egypt? no picture available. principal papers N/A. hardware N/A. terms http://www.thocp.net/slideshow/heron.html

Heron of Alexandria c 152, Alexandria c 82 BC Egypt? no picture available principal papers N/A hardware N/A terms hydraulics, steam engine, mathematics Heron, or Hiero, was a scientist and inventor in Alexandria. Heron wrote many books on mathematics, physics, geometry, and mechanics. The 'Pneumatica' describes mechanical devices operated by compressed air, water or steam, such as a fire engine, a water organ, and the aeolipile, which is the first steam-powered engine. His device consisted of a sphere mounted on a boiler by an axial shaft and having two canted nozzles to produce a rotary motion from the escaping steam. With this steam engine one opened the gates of the temple or town. The later steam engines of the 18th century (Thomas Watt) were partly based on this design.

19. Heron Of Alexandria heron of alexandria, her on Pronunciation Key. heron of alexandria or Hero,mathematician and inventor. The dates of his birth and death are unknown; http://www.factmonster.com/ce6/people/A0823538.html

Home U.S. People Word Wise ... Homework Center Fact Monster Favorites 2006 TFK Almanac Quiz: Charlie and the Chocolate Factory SpongeBob Lemony Snicket ... Fantasy Books Reference Desk Atlas Almanacs Dictionary Encyclopedia ... Encyclopedia Heron of Alexandria Pronunciation Key Heron of Alexandria or Hero, mathematician and inventor. The dates of his birth and death are unknown; conjecture places them between the 2d cent. B.C. and the 3d cent. A.D. He is believed to have lived in Alexandria; although he wrote in Greek, his origin is uncertain. Several of his works survive either in Greek or in Latin translation. He wrote on the measurement of geometric figures, and a formula for finding the area of a triangle has been ascribed to him. Known for his study of mechanics and pneumatics, he invented many contrivances operated by water, steam, or compressed air; these include a fountain, a fire engine, siphons, and an engine in which the recoil of steam revolves a ball or a wheel. The Columbia Electronic Encyclopedia, Page Tools: Cite Print More on Heron of Alexandria from Fact Monster: Hero, Greek mathematician

20. Finding Area heron of alexandria heron of alexandria or Hero,mathematician and inventor. The dates of his birth and death are Antioch, city, Turkey - Antioch or http://www.factmonster.com/ipka/A0876858.html

Home U.S. People Word Wise ... Homework Center Fact Monster Favorites 2006 TFK Almanac Quiz: Charlie and the Chocolate Factory SpongeBob Lemony Snicket ... Fantasy Books Reference Desk Atlas Almanacs Dictionary Encyclopedia ... Tables and Formulas Finding Area Square A = a , in which a is one of the sides. Rectangle A = ab, in which a is the base and b is the length. Parallelogram A = bh, in which b is the base and h is the height. Circle r is the radius. Ellipse r r is the longer radius, and r is the shorter radius. Trapezoid A = (h[b + b ])/2, in which h is the height, b is the longer parallel side, and b is the shorter parallel side. Triangle Given base and height: A = (1/2)bh, in which b is the base and h is the height. Given side, angle, side (SAS): a is one side, b Given three sides: when s = (a + b + c)/2 (Heron's formula) , in which a, b, and c represent the three sides. Terms Used in Equations Tables and Formulas Finding Volume Page Tools: Cite Print More on Finding Area from Fact Monster: Heron of Alexandria - Heron of Alexandria or Hero,mathematician and inventor. The dates of his birth and death are ... Antioch, city, Turkey

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