1. Hipparchus Biography of Hipparchus (190BC120BC) hipparchus of rhodes can say withcertainty that Hipparchus was in Alexandria in 146 BC and in Rhodes near the http://www-groups.dcs.st-and.ac.uk/~history/Mathematicians/Hipparchus.html

Hipparchus of Rhodes Born: 190 BC in Nicaea (now Iznik), Bithynia (now Turkey) Died: 120 BC in probably Rhodes, Greece Click the picture above to see three larger pictures Show birthplace location Previous (Chronologically) Next Biographies Index Previous (Alphabetically) Next Main index Version for printing Little is known of Hipparchus 's life, but he is known to have been born in Nicaea in Bithynia. The town of Nicaea is now called Iznik and is situated in north-western Turkey. Founded in the 4 th Century BC, Nicaea lies on the eastern shore of Lake Iznik. Reasonably enough Hipparchus is often referred to as Hipparchus of Nicaea or Hipparchus of Bithynia and he is listed among the famous men of Bithynia by Strabo , the Greek geographer and historian who lived from about 64 BC to about 24 AD. There are coins from Nicaea which depict Hipparchus sitting looking at a globe and his image appears on coins minted under five different Roman emperors between 138 AD and 253 AD. This seems to firmly place Hipparchus in Nicaea and indeed Ptolemy does describe Hipparchus as observing in Bithynia, and one would naturally assume that in fact he was observing in Nicaea. However, of the observations which are said to have been made by Hipparchus, some were made in the north of the island of Rhodes and several (although only one is definitely due to Hipparchus himself) were made in Alexandria. If these are indeed as they appear we can say with certainty that Hipparchus was in Alexandria in 146 BC and in Rhodes near the end of his career in 127 BC and 126 BC.

2. Hipparchus Hipparchus (190 120 B.C.) http://tmsyn.wc.ask.com/r?t=an&s=hb&uid=24312681243126812&sid=343126

3. Poster Of Hipparchus hipparchus of rhodes. lived from 190 BC to 120 BC. Hipparchus an early exampleof trigonometric tables and gave methods for solving spherical triangles. http://www-groups.dcs.st-and.ac.uk/~history/Posters2/Hipparchus.html

Hipparchus of Rhodes lived from 190 BC to 120 BC Hipparchus an early example of trigonometric tables and gave methods for solving spherical triangles. Find out more at http://www-history.mcs.st-andrews.ac.uk/history/ Mathematicians/Hipparchus.html

4. Hipparchus The Astronomer hipparchus of rhodes (called also Hipparchus of Nicaea or Hipparchus of Bithynia) (c. 190 120 BC) is one of the greatest astronomers of all http://tmsyn.wc.ask.com/r?t=an&s=hb&uid=24312681243126812&sid=343126

5. Hipparchus The Astronomer The Astronomer hipparchus of rhodes. Michael Lahanas. ?ppa ? d? hipparchus of rhodes (called also Hipparchus of Nicaea or Hipparchus of http://www.mlahanas.de/Greeks/Hipparchus.htm

The Astronomer Hipparchus of Rhodes Michael Lahanas Griechische Astronomie: Hipparchos Pliny, Natural History, Book 2) 77 AD on Hipparchus Hipparchus of Rhodes Ptolemy produced with the Almagest the most important book of astronomy for around 1500 years but for this work the contribution of the earlier work of Hipparchus was very important. Almost none of Hipparchus books survived except a commentary on Phainomena of Eudoxus and Aratus of Soli. We know the work of Hipparchus from Ptolemy's Almagest and from comments of others. The Chord, Crd(a), that was calculated by Hipparchus as a function of the angle a. Hipparchus generated a Chord table that is in principle a sine table. He Boyer Based on Babylonian observations, he improved the accuracy of the length of the lunar, solar and sidereal years. He estimated the solar year with an accuracy which is only 6 1/2 minutes different from the current value. For the lunar month he obtained a value of 29 The tropical (solar) year is the period of the Sun's apparent revolution from an equinox to the same equinox again (The time reference that we use in everyday life), and the sidereal year is the period of the Sun's apparent revolution from a fixed star to the same fixed star. Hipparchus discovered the precession of the equinoxes and was influential in the development of trigonometry, redefined and formalized the projection as a method for solving complex astronomical problems without spherical trigonometry and probably proved its main characteristics.

6. Hipparchus Biography Large image (105K). Very large image (full title page) (2.3M). Hipparchus was born in Nicaea in Bithynia, but spent much of his life in Rhodes. http://tmsyn.wc.ask.com/r?t=an&s=hb&uid=24312681243126812&sid=343126

7. The Myth Of Newton's Apple, Did Hipparchus Discover Newtons Gravity And Inverse Was Newtons apple in reality hipparchus of rhodes, the Greek mathematician?New evidence exists that like Copernicus who did not mention Aristarchus http://www.mlahanas.de/Greeks/HipparchusGraviation.htm

The myth of Newton's apple, did Hipparchus discover Newtons gravity and inverse square law? Michael Lahanas If I have seen farther it is by standing on the shoulders of giants. Sir Isaac Newton Was Newtons apple in reality Hipparchus of Rhodes All movement tends to maintenance, or rather all moved bodies continue to move as long as the impression of the force of their motors (original impetus) remains in them. Principle of Leonardo Did Newton use Leonardo's words in his first law? Every body continues in its state of rest, or of uniform motion in a straight line, unless it is compelled to change that state by forces impressed upon it. Sir Isaac Newton first law of motion La Rivoluzione Dimenticata (The Forgotten Revolution) Lucio Russo Feltrinelli, Milan, 1996 De facie . Moreover, in the Scholia12 of the Principia (published only in 1981!) Newton had inserted, without quotation, several chosen passages of De facie De mundi systemate Liber I . What about the inverse square law? Again in the Scholia Newton gives credit for its discovery to Pythagoras (while in the De mundi systemate Liber I he credits the second king of Rome, the legendary Numa Pompilius, for the introduction of heliocentrism, suggesting, however, that he may have had it from the Egyptians).

8. Hipparchus hipparchus of rhodes http://tmsyn.wc.ask.com/r?t=an&s=hb&uid=24312681243126812&sid=343126

9. Hipparchus Of Rhodes Biography hipparchus of rhodes was born around 190 BC in Nicaea, Bithynia (now known asnow Iznik,Turkey). Hipparchus divided a circle into 360 degrees was the http://space.about.com/od/astronomerbiographies/a/hipparchusbio.htm

var zLb=3; zJs=10 zJs=11 zJs=12 zJs=13 zc(5,'jsc',zJs,9999999,'') About Homework Help Space / Astronomy People - Bios/Jobs/Life ... Astronomer Biographies Hipparchus of Rhodes Biography Homework Help Space / Astronomy Essentials Education ... Help zau(256,140,140,'el','http://z.about.com/0/ip/417/C.htm','');w(xb+xb+' ');zau(256,140,140,'von','http://z.about.com/0/ip/496/6.htm','');w(xb+xb); FREE Newsletter Sign Up Now for the Space / Astronomy newsletter! See Online Courses Search Space / Astronomy click for more images Hipparchus of Rhodes Public Domain Stay up to date! click for more images Hipparchus of Rhodes Public Domain Email to a friend Print this page Related Resources to Hipparchus of Rhodes Biography Star Magnitudes Ptolemy Biography Recent Discussions Picture Planet X Mars Close Approach Most Popular Close Approach of Mars in 2005 Mars Closest To Earth in 50... Shuttle Challenger Disaster Space and Astronomy Pictures What's Hot The Spacesuit Anaxagoras of Clazomenae Bio Ptolemy Biography Pluto - Pictures and Astronomy Facts ... Asteroid On Collision Cours... Hipparchus of Rhodes Biography From Nick Greene Your Guide to Space / Astronomy FREE Newsletter.

10. Hipparchus hipparchus of rhodes. Name hipparchus of rhodes Dates I80 BC 125 BC Place of birth or life's work Rhodes, Greece, Nicea and Alexandria http://tmsyn.wc.ask.com/r?t=an&s=hb&uid=24312681243126812&sid=343126

11. Historia Matematica Mailing List Archive: [HM] Chord Table Poss Subject HM Chord Table Possibly by hipparchus of rhodes From BarnabasHughes (hcedu037@csun.edu) hipparchus of rhodes composed 12 books of chords. http://sunsite.utk.edu/math_archives/.http/hypermail/historia/jan00/0006.html

[HM] Chord Table Possibly by Hipparchus of Rhodes Subject: [HM] Chord Table Possibly by Hipparchus of Rhodes From: Barnabas Hughes ( hcedu037@csun.edu Date: Sun Jan 02 2000 - 13:56:22 EST Next message: Eric Detrez: "[HM] symbol for infinity" Previous message: Alejandro Rivero: "Re: [HM] Barrow" Next in thread: Barnabas Hughes: "Re: [HM] Chord Table Possibly by Hipparchus of Rhodes" Reply: Barnabas Hughes: "Re: [HM] Chord Table Possibly by Hipparchus of Rhodes" Messages sorted by: [ date ] [ thread ] [ subject ] [ author ] Dear Colleagues, Relying on Theon of Alexandria the historian Thomas L. Heath [1] noted that Hipparchus of Rhodes composed 12 books of chords. More recently G.L. Toomer [2] suggested that 12 sections on chord tables probably describes what Hipparchus constructed. In fact, following upon a remark by Otto Neugebauer [3], his mentor and colleague at Brown University, he recreated a plausible table of 24 values, beginning with 7.5 degrees and proceeding in that increment to 180 degrees, using (what is now considered certain) a radius of 3438 minutes for the base circle, the Pythagorean Theorem, the

12. Hipparchus, Greek Astronomer observations chiefly on the island of Rhodes. Ptolemy's geocentric theory of the universe was based largely on the conclusions of Hipparchus, a http://tmsyn.wc.ask.com/r?t=an&s=hb&uid=24312681243126812&sid=343126

13. Historia Matematica Mailing List Archive: By Thread HM Chord Table Possibly by hipparchus of rhodes Barnabas Hughes (Sun Jan 022000 135622 EST). Re HM Chord Table Possibly by hipparchus of rhodes http://sunsite.utk.edu/math_archives/.http/hypermail/historia/jan00/

Historia Matematica Mailing List Archive By Thread Most recent messages 215 messages sorted by: [ author ] [ date ] [ subject ] Starting: Mon Jan 31 2000 - 02:48:57 EST Ending: Tue Feb 01 2000 - 04:48:16 EST [HM] Book: "Pierre Louis Moreau de Maupertuis" Dr. Siegmund Probst (Wed Dec 31 1969 - 18:59:59 EST) Re: [HM] Poetry and Mathematics Ed Wall (Fri Dec 31 1999 - 19:11:50 EST) Re: [HM] Poetry and Mathematics Antreas P. Hatzipolakis (Sat Jan 01 2000 - 16:25:17 EST) Re: [HM] Poetry and Mathematics Joao Filipe Queiro (Sun Jan 02 2000 - 11:28:09 EST) Re: [HM] Poetry and Mathematics Sanford Segal (Fri Jan 07 2000 - 12:51:25 EST) Re: [HM] Poetry and Mathematics Julio Gonzalez Cabillon (Sat Jan 08 2000 - 00:08:13 EST) Re: [HM] Poetry and Mathematics Don Cook (Mon Jan 10 2000 - 01:10:58 EST) Re: [HM] desmic? Julio Gonzalez Cabillon (Sat Jan 01 2000 - 13:09:44 EST) Re: [HM] the term 'arithmetization' Julio Gonzalez Cabillon (Sun Jan 02 2000 - 11:14:26 EST) Re: [HM] the term 'arithmetization' Bernd Buldt (Mon Jan 03 2000 - 05:21:35 EST) Re: [HM] the term 'arithmetization' Bernd Buldt (Mon Jan 03 2000 - 09:21:42 EST) Re: [HM] the term 'arithmetization' Julio Gonzalez Cabillon (Mon Jan 03 2000 - 15:56:11 EST) [HM] surnames and arithmetization Gordon (Mon Jan 03 2000 - 18:33:25 EST) Re: [HM] surnames and arithmetization David Fowler (Tue Jan 04 2000 - 06:37:12 EST) Re: [HM] the term 'arithmetization' Michael Detlefsen (Mon Jan 03 2000 - 13:55:33 EST) Re: [HM] the term 'arithmetization' Bill Everdell (Mon Jan 03 2000 - 23:38:45 EST) Re: [HM] Barrow Alejandro Rivero

14. Early Struggles And Financial Successes. (from Rhodes, Cecil) hipparchus of rhodes Biography of this Greek astronomer and mathematician who discovered the precession of the equinoxes, calculated the http://tmsyn.wc.ask.com/r?t=an&s=hb&uid=24312681243126812&sid=343126

15. People(Hipparchus) - STARBASE hipparchus of rhodes (180125 BC), hipparchus of rhodes was a Greek astronomerwho was the first person to Short Biography of hipparchus of rhodes http://www.ph.surrey.ac.uk/astrophysics/files/hipparchus.html

NB. Blue links are links within the current page. Purple links are external links to other web sites. Pale Green links are are to other pages at this site.) General Copernicus, Nicolaus (1473-1543) Einstein, Albert (1879-1955) Galileo Galilei (1564-1642) ... Hawking, Stephen (1942-1998+) Hipparchus of Rhodes was a Greek astronomer who was the first person to systematically survey the sky and is considered to be the 'father of astronomy'. LINKS Short Biography of Hipparchus of Rhodes http://www.windows.ucar.edu/cgi-bin/tour_def/people/ancient_epoch/hipparchus.html Information on Hipparchus and what he did http://windows.engin.umich.edu/cgi-bin/tour_def/people/ancient_epoch/hipparchus.html Information about the observations of Hipparchus during a solar eclipse including a diagram http://astrosun.tn.cornell.edu/courses/astro201/hipparchus.htm

16. TMTh HIPPARCHUS OF RHODES MATHEMATICIAN, ASTRONOMER, GEOGRAPHER hipparchus of rhodes (fl. 190 120 BC) http://tmsyn.wc.ask.com/r?t=an&s=hb&uid=24312681243126812&sid=343126

17. PSIgate - Physical Sciences Information Gateway Search/Browse Results hipparchus of rhodes Born 190 BC in Nicaea (now Iznik), Bithynia (now Turkey)Died 120 BC in probably Rhodes, Greece Click the picture above to see three http://www.psigate.ac.uk/roads/cgi-bin/search_webcatalogue.pl?term1=Hipparchus&l

18. Hipparchus Hipparchus (190120 B.C.) Nicaea Rhodes geocentrist 1st to use trigonometry (part inventor) celestial coordinate system http://tmsyn.wc.ask.com/r?t=an&s=hb&uid=24312681243126812&sid=343126

19. PSIgate - Physical Sciences Information Gateway Search/Browse Results hipparchus of rhodes This site provides a biography of the astronomerHipparchus (190120BC). The site is part of the MacTutor History of Mathematics http://www.psigate.ac.uk/roads/cgi-bin/psisearch.pl?term1=Hipparchus&limit=0&sub

20. This Greek Philosopher Compiled The First Catalogue Of Stars (at He observed between 146 and 127BC from the city of Rhodes and his catalogue mentions the "nebulae" M44 and the Perseus double cluster. http://tmsyn.wc.ask.com/r?t=an&s=hb&uid=24312681243126812&sid=343126

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