Extractions: 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.
Heron Of Alexandria -- Encyclopædia Britannica MLA style " heron of alexandria." Encyclopædia Britannica. 2004 APA style heron of alexandria. Encyclopædia Britannica. Retrieved May 12, 2004, from Encyclopædia Britannica http://www.britannica.com/eb/article?eu=41048
Heron Of Alexandria heron of alexandria. c 152 BC, Alexandria. c 82 BC, Egypt? 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
Extractions: 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
History Of Computing Heron Of Alexandria heron of alexandria. c 152, Alexandria. c 82 BC Egypt? Heron, or Hiero, was a scientist and inventor in Alexandria. Heron wrote many books on mathematics, physics, geometry http://www.thocp.net/slideshow/heron.html
Extractions: 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.
Heron Of Alexandria. The Columbia Encyclopedia, Sixth Edition. 2001 The Columbia Encyclopedia, Sixth Edition. 2001. heron of alexandria. D. He is believed to have lived in Alexandria; although he wrote in Greek, his origin is uncertain http://www.bartleby.com/65/he/HeronAle.html
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Bowie Wonderworld Columnists: Black Owl - Heron Of Alexandria black owl heron of alexandria Black Owl. heron of alexandria (ca. 75 AD surprised to discover (if you don't know already) what heron of alexandria invented. Leonard De Vinci is his son in a http://www.bowiewonderworld.com/cols/blackowl05.htm
Heron heron of alexandria. Born about Sometimes called Hero, heron of alexandria was an important geometer and worker in mechanics. Perhaps the http://www-gap.dcs.st-and.ac.uk/~history/Mathematicians/Heron.html
Extractions: 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
Extractions: 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.
Heron Biography of heron of alexandria (1075) heron of alexandria. Born about 10 in (possibly) Alexandria, Egypt Sometimes called Hero, heron of alexandria was an important geometer and worker in http://www-groups.dcs.st-and.ac.uk/~history/Mathematicians/Heron.html
Extractions: 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
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, Inventions, Biography, Science heron of alexandria. Sequence Control. heron of alexandria described a mechanism or apparatus that made use of the so called sequence control mechanism. http://www.mlahanas.de/Greeks/HeronAlexandria.htm
Extractions: Translate: Heron from Alexandria 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 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. 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.
Heron's Mathematics The answer is the definitions are not Euclids. Toward the beginning of the second century AD heron of alexandria found it convenient to introduce http://www.mlahanas.de/Greeks/HeronsMath.htm
Extractions: Let a,b,c be the sides of a triangle, and let A be the area of the triangle. Heron's formula states that A*A = s(s-a)(s-b)(s-c), where s = (a+b+c)/2. The actual origin of this formula is somewhat obscure historically, and it may well have been known for centuries prior to Heron. For example, some people think it was known to Archimedes. However, the first definite reference we have to this formula is Heron's. His proof of this result is extremely circuitious, and it seems clear that it must have been found by an entirely different thought process, and then "dressed up" in the usual synthetic form that the classical Greeks preferred for their presentations. For a proof see Dr. McCrory Foundation of Geometry lecture: An algebraic proof of Heron's Formula A trigonometric proof of Heron's Formula A triangle with integer edge lengths and integer area is called Heronian Heron's division of a triangle Heron provided a solution in Metrica for the geometric problem to divide a triangle in two pieces of the same area given a point D on a side of the triangle. If this point is on the middle of the side (point M) then the line MC divides the triangle in two pieces of the same area. For some other point D first get the parallel ME of the line DC. This parallel cuts the triangle in the point E. Then ED is the line that cuts the triangle in two pieces with the same area.
Heron Of Alexandria 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. http://alexandrias.tripod.com/hero.htm
Extractions: 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
Heron Of Alexandria -- Encyclopædia Britannica heron of alexandria Encyclopædia Britannica Article. To cite this page MLA style heron of alexandria. Encyclopædia Britannica. 2004. http://www.britannica.com/eb/article?eu=41048&tocid=0&query=alexandria
Hero Of Alexandria - Wikipedia, The Free Encyclopedia Hero of Alexandria. (Redirected from heron of alexandria). Hero (or Heron) of Alexandria (roughly AD 10 to roughly AD 70) was a Greek engineer and geometer. http://en.wikipedia.org/wiki/Heron_of_Alexandria
Extractions: (Redirected from Heron of Alexandria Hero (or Heron of Alexandria (roughly A.D. to roughly A.D. ) was a Greek engineer and geometer. His most famous invention was the first documented steam engine , the aeolipile . He is said to have been a follower of the Atomists . Some of his ideas were derived from the works of Ctesibius A number of references mention dates around 150 BC, but these are inconsistent with the dates of his publications and inventions. Perhaps this is due to a misinterpretation of the phrase "first century". edit The complete surviving works are: In optics , Hero proposed that light travels along the shortest geometric path. This view is no longer accepted, having been replaced by the least-time principle. In geometry , he stated and proved a formula, now known as Heron's formula , for calculating the area of a triangle in terms of its sides. He also came up with an iterative process for calculating square roots of numbers. Hero is credited with inventing many feedback control devices using water, fire and compressed air in various combinations, and the first type of analogue
Heron Of Alexandria SOME PIONEERS IN AIR ENGINE DESIGN. heron of alexandria. Some of the earliest examples of machines powered by heated air can be found http://www.stirlingengines.org.uk/pioneers/pion.html
Extractions: Dictionaries: General Computing Medical Legal Encyclopedia Word: Word Starts with Ends with Definition Hero (or Heron of Alexandria (roughly A.D. Alternate uses, see Number 10, ten (album) Centuries: 1st century BC - 1st century - 2nd century Decades: 30s BC 20s BC 10s BC 0s BC 0s - Years: 5 6 7 8 9 -
Extractions: Dictionaries: General Computing Medical Legal Encyclopedia Word: Word Starts with Ends with Definition Hero (or Heron of Alexandria (roughly A.D. Alternate uses, see Number 10, ten (album) Centuries: 1st century BC - 1st century - 2nd century Decades: 30s BC 20s BC 10s BC 0s BC 0s - Years: 5 6 7 8 9 -
Heron Of Alexandria encyclopediaEncyclopedia heron of alexandria, hEr on Pronunciation Key. Related content from HighBeam Research on heron of alexandria. http://www.infoplease.com/cgi-bin/id/A0823538.hmtl
Extractions: Heron of Alexandria [h E 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
Extractions: By Alphabet : Encyclopedia A-Z H Related Category: Mathematics, Biographies Heron of Alexandria [h E Pronunciation Key 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.
