41. Science Timeline Hilschmann, Norbert, 1965. Hinshelwood, Cyril, 1950. hipparchus of rhodes,134 bce. Hippocrates of Chios, 430 bce. Hippocrates of Cos, 400 bce, 1185. http://www.sciencetimeline.net/siteindex_h.htm

use checkboxes to select items you wish to download Select Index Letter: a b c d ... w-x-y-z Haber, Edgar, 1962 Haber, Fritz,1909, 1915 Habermas, Jurgen, 1968 hackers, 1959 Haeckel, Ernst Heinrich, 1859, 1866, 1940 Hahn, Otto, 1938 Haken, Wolfgang, 1976 Haldane, John Burdon Sanderson, 1924, 1926, 1929, 1932, 1937, 1941 Hale, George Ellery, 1908, 1949 Hales, Stephen, 1727, 1733 Haley, Jay, 1952 Hall, Benjamin D., 1961 Hall, Chester More, 1733 Hall, Edwin Herbert, 1879, 1980 Hall, Howard, 1999 Hall, James, 1795 Hall, Jeffrey C., 1984, 1986, 1991 Hall, John L., 1989 Hall, Marshall, 1833 Halley, Edmund, 1678, 1693, 1705, 1718, 1758, 1759, 1835 hallucinagenic mushroom, 7000 bce Halm, Jacob, 1911 Hamburger, Viktor, 1975 Hamer, Dean H., 1993

42. Greece: Ancient, Athens Greece, Greek, Map Of Greece, Greek, Greece, Gods, Pictu Project in the Lake Kopaida (14th Century BC) How the Greeks Used Geometry To Understandthe Stars Aristarchus of Samos hipparchus of rhodes Claudius Ptolemy http://www.1000dictionaries.com/greece4.html

ALEXANDER THE GREAT ALPHABET, LANGUAGE ARGONAUTICA ART, ARCHAEOLOGY, ARCHITECTURE ... Write to Us 1996-2004 1000GRAPHICS.COM Try Our New Search Engine metaPYTHIA! We would like to express our thanks and appreciation to Robin Good for their wonderful critique of and a BRAVO for our dictionary pages. If you need to write to us, please click here and make the obvious modifications to our e-mail address. Most Popular Downloads of the Week Most Popular Downloads of the Month Most Popular Downloads of the Year ... Latest Tech News Stories And Here Are the Most Popular Windows Downloads from CNET: Most Popular Downloads Most Popular Internet Downloads Most Popular Business Downloads Most Popular Mobile Phone Downloads ... Open Directory Project Search: Some of the Most Popular Searches (Click One to Get There): Jokes, Kazaa Lite, Health, Games, ... The Bible. Other Very Popular Searches (Click One to Get There): Britney Spears, Carmen Electra, Jennifer Lopez, Jessica Simpson, ... Johnny Depp. Sports (Click One to Get There): All Popular Sports, Baseball, Basketball, Bowling, ... Svenska,... Soulis.com An Internet Directory LinkBase on Greece (Part IV) Optimized for Internet Explorer 5.x

43. Epicycle The geometry of epicycles was perfected by hipparchus of rhodes at some time around125 BC, 185 years after the birth of Aristarchus of Samos, the inventor of http://gd.tuwien.ac.at/linuxcommand.org/man_pages/epicycle1.html

epicycle XScreenSaver(1) XScreenSaver(1) NAME epicycle - draws a point moving around a circle which moves around a cicle which... SYNOPSIS epicycle [-display host:display.screen ] [-root] [-window] [-mono] [-install] [-noinstall] [-visual viz ] [-colors N ] [-foreground name ] [-color-shift N ] [-delay microseconds ] [-holdtime seconds ] [-linewidth N N N number number ] [-harmonics N ] [-timestep number probabil- ity number number DESCRIPTION The epicycle program draws the path traced out by a point on the edge of a circle. That circle rotates around a point on the rim of another circle, and so on, several times. The random curves produced can be simple or complex, convex or concave, but they are always closed curves (they never go in indefinitely). You can configure both the way the curves are drawn and the way in which the random sequence of circles is generated, either with command- line options or X resources. OPTIONS -display host:display.screen

44. Lecture 6: Motions Of The Stars Halley in 1718 for three bright stars Sirius, Aldebaran, and Arcturus, by comparinghis measurements of their positions to those of hipparchus of rhodes (300BC http://www-astronomy.mps.ohio-state.edu/~pogge/Ast162/Unit1/motions.html

Astronomy 162: Prof. Pogge, MTWThF 11:00 Lecture 6: Motions of the Stars Readings: Ch 19, box 19-1 Velocity) Key Ideas: The stars are in constant motion. Observed motions: proper motions radial velocity True Space Motion The Fixed Stars To the naked eye, the stars appear "fixed" to the sky. In reality, the stars are in constant motion. The great distances to the stars means that their apparent motions across the sky are very small during a human lifetime. Proper Motions Apparent angular motion of nearby stars with respect to more distant stars. Typical proper motion is ~0.1 arcsec/year. Largest: 10.25 arcsec/yr (Barnard's Star). These reflect the true motion of the stars relative to the Sun through space. Proper motions are Cumulative The effect of proper motions build up over time... The longer you wait, the greater the apparent angular motion is Modern measurement of proper motions: Compare photos of the sky taken 20 to 50 years apart. Measure how much the stars have moved relative to distant background objects (usually galaxies or quasars). Example: Consider a star with a proper motion of 0.1 arcsec/year:

45. Arapacana Press hipparchus of rhodes (floruit 150 bc) quadrupled the Callippic Cycle, and therebymanaged to calculate the length of the tropical year at 365.242 days, nearly http://www.arapacana.com/Glossary/Y.htm

Arapacana Press The Alphabetary Heraldic Genealogical Glossary Glossemata Genealogicæ In Alphabetical Order —Y— (y) : [anthropology] younger, with respect to the ego; a kin type determinant used to modify a kinship dimension. Opp. (e). Y : [Ogham Q-Celtic] idra -y : -ia : [Gk] quality of. -y : - ia : quality, state, condition. -y : - ium : action, the result of action. Y chromosome : [1923] a sex chromosome unique to male cells. The male will typically have a pair of two dissimilar sex chromosomes, namely X and Y, in each of its cells. Physically, a Y chromosome seems to be half the size of other chromosomes, and seems to have its centromere biased toward one end, so it gives the appearance of the letter Y during mitosis, whereas all the other chromosomes exhibit X shapes. Sex chromosomes can transmit physical and behavioral genes, but the transmission of traits belongs almost exclusively to the domain of the X chromosome, which is common to both sexes. The main duty of the Y chromosome is the endowment of male sexuality or maleness. One gene that promotes hair growth in the ear canal happens to be carried by the Y chromosome, but very few other specific traits have been traced to the Y chromosome. Opp. X chromosome. Y the letter : Ny, Gn, Ng.

46. Conservation Treatment Awards West Region history. The six scientists depicted are hipparchus of rhodes, Copernicus,Kepler, Galileo, Isaac Newton, and William Herschel. Six http://www.heritagepreservation.org/PROGRAMS/SOS/CTA/West.htm

Conservation Treatment Awards West Region (includes Alaska and Hawaii) Arizona California Hawaii Oregon ... Washington Arizona Tucson Freeman Pioneer Memorial The Freeman Pioneer Memorial California Los Angeles Astronomer's Monument Located at the internationally famous Griffith Observatory, Astronomer's Monument (1934) stands 25 feet tall and includes statues of important scientists in world history. The six scientists depicted are Hipparchus of Rhodes, Copernicus, Kepler, Galileo, Isaac Newton, and William Herschel. Six different artists—Roger Noble Burnham, Djey el Djey, Arnold Forester, Archibald Garner, Gordon Newell, and George Stanley—were hired to sculpt the figures. Stanley also designed the Academy Award or "Oscar." Griffith Observatory and the City of Los Angeles are the owners. The Friends of the Observatory is the applicant. The Hugo Reid Family Scottish-born Hugo Reid was one of the first English-speaking immigrants to live in southern California. Elected as a delegate to the California Constitutional Convention, Reid was one of the signatories of the state's first Constitution. Perhaps he is best known for the more than 20 letters he wrote to the LA Star in 1851, which described and thus preserved the beliefs, customs, and traditions of the local Native American tribes. Married to a Native American, he adopted her two children at a time when many other immigrants were marrying into prominent Spanish-speaking families.

47. Popular Fallacies In The History Of Science - Numericana At the exact same time however, hipparchus of rhodes (190120 BC) reverted to thegeocentric system, and was instrumental in killing the heliocentric idea cf. http://home.att.net/~numericana/answer/record.htm

home index units counting ... physics Final Answers , Ph.D. Setting the Record Straight Natura abhorret a vacuo [Nature abhors a vacuum]. touting the ancient "Horror Vacui" misconception. The heliocentric Copernican system was known two millenia before Copernicus. The assistants of Galileo Galilei and the mythical experiment at the Tower of Pisa. Switching calendars : Newton was not born the year Galileo died. The Lorenz Gauge is an idea of Ludwig Loren z not H.A. Loren tz Special Relativity was first formulated by (Einstein a close second). The Fletcher-Millikan "oil-drop" experiment was not the sole work of Millikan. On this site, see also: Humor : Let a kan be the charge of 1000 electrons (so each is a millikan Calendars and chronology Related Links (Outside this Site) Forgotten History by Caroline H. Thompson Popular Fallacies in the History of Science Heliocentric "Copernican" System Did the idea of an heliocentric system originate with Copernicus? No. The idea is actually far more ancient. Although Heraclides of Pontus (387 BC - 312 BC) deserves great credit for first suggesting that the Earth rotates around an axis, he did not yet place the Sun at the center of the Solar system (in spite of what some reports are still stating).

48. Astronomy Lecture Notes - Early History hipparchus of rhodes (190120 BC) Wrote a star catalog in which he introduced themagnitude system also calculated the length of the year and discovered the http://www.olemiss.edu/courses/astr103/Topics-Introduction/Ancient-N.html

Early History of Astronomy (External Links page Prehistoric Period - Early Sites and Archeoastronomy Importance of astronomy: Season changes, marked by equinoxes and solstices (celebrated with decorated trees, Yule logs, mistletoe and communal celebrations, for example), were important dates for agriculture and hunting; Motion of the Sun, the Moon and fixed stars also used to keep track of the time of day, for orientation, and later navigation needs. Earliest evidence: Cave paintings like Lascaux (16,000 yr ago) and others (stars, 5000-yr old map of the Moon). Earliest structures: Many examples with aligned markers to keep track of time of year, like Nabta (5000-3000 BC), Stonehenge (2800-1100 BC), Seahenge (2050 BC). America: Planets: In the bronze age around 3000 BC, the planets were known out to Saturn. Their wandering motion made them less useful for orientation, but they were used for calendars and astrology. [More speculative: Did catastrophic events like comet impacts occur around 3000-2000 BC and contribute to the demise of ancient civilizations?]

49. Science Technology Summary topHipparchus the Greek. hipparchus of rhodes was a Greek astronomerand geographer who lived circa 150 BC. During his life, Hipparchus http://spdxdev.estec.esa.nl/science-e/www/object/index.cfm?fobjectid=28820

50. Mathem_abbrev Heisenberg, Werner Heraclides of Pontus Heron of Alexandria Herschel, CarolineHerschel, John Higman, Graham Hilbert, David hipparchus of rhodes Hippias of http://www.pbcc.cc.fl.us/faculty/domnitcj/mgf1107/mathrep1.htm

Mathematician Report Index Below is a list of mathematicians. You may choose from this list or report on a mathematician not listed here. In either case, you must discuss with me the mathematician you have chosen prior to starting your report. No two students may write a report on the same mathematician. I would advise you to go to the library before choosing your topic as there might not be much information on the mathematician you have chosen. Also, you should determine the topic early in the term so that you can "lock-in" your report topic!! The report must include: 1. The name of the mathematician. 2. The years the mathematician was alive. 3. A biography. 4. The mathematician's major contribution(s) to mathematics and an explanation of the importance. 5. A historical perspective during the time the mathematician was alive. Some suggestions on the historical perspective might be: (a) Any wars etc. (b) Scientific breakthroughs of the time (c) Major discoveries of the time (d) How did this mathematician change history etc.

51. Lecture 6 Early Astronomy - The Greeks And Babylonians I. The hipparchus of rhodes (160 127 BC) added eccentrics, epicycles, anddeferents to the geocentric model to explain planetary motion. http://www.astro.umn.edu/~manawa/class/l6.txt

< 5o. * Ptolemy still used physical, heavenly spheres and so the universe was finite, with the stars approximately 20000 earth radii away (assuming an earth-moon distance of 59 earth radii - though this model had no set distance scale.) * Even after it was discredited, Ptolemy's model was still in use - because it did predict the locations of the planets rather well.

52. The Gurus Love You. MAT300. Unenlightened Soul. Do you think hipparchus of rhodes is a good choice foran eight page paper about his life and works? The Gurus Respond Ellen Feiss. http://www.truemeaningoflife.com/oldwisdom.php?topid=33137&responses=2

53. TITLE Although it is possible to use the Armillary for making observations (Eratosthenes204BC catalogued more than 700 stars, and hipparchus of rhodes (150125BD http://world.std.com/~leep/cat003/armil.htm

ARMILLARY SPHERE An Armillary Sphere is a model of the celestial sphere based on the Ptolemy theory of the universe with the earth being stationary at the centre. The celestial sphere is imagined as a sphere with the stars fixed onto its interior and the earth at its centre. Although we now know this to be inaccurate, it does not effect the working of the Armillary Sphere since to an observer on Earth the motion of the Sun and Stars appears the same. The Armillary Sphere was an early stage in the history of horology (the science of time measurement) Since the rising and setting of the sun governs our day, a model of the motions of the sun and stars was an important step in the understanding of time. It is a refinement of the earlier solid celestial spheres developed by Greek scientists such as Archimedes. Being solid made it difficult to imagine the position of the Earth at the centre, consequently these spheres developed a more skeletal appearance, consisting of a series of rings and becoming known as Armillary Spheres, presumably from the Latin word 'armilla' meaning bracelet. Although it is possible to use the Armillary for making observations (Eratosthenes 204BC catalogued more than 700 stars, and Hipparchus of Rhodes (150-125BD) determined distance from the Earth to the Sun and produced a complete star catalogue for his latitude) in practice this is difficult. However with the advent of stereographic projection the Armillary led to the development of the more accurate and useful anaphoric clock and the Astrolabe.

54. Spice Maps Background His work in astronomy was largely based on the ideas of hipparchus of rhodes (threehundred years earlier) who proposed divicding the length and breadth of the http://ias.berkeley.edu/orias/spice/textobjects/moreonmaps.htm

LESSON BOX OVERVIEW ANDCONTENTS ARTIFACTS PRIMARY SOURCES REGIONAL GRID MAP ... LINKS Monsoon Winds to the "Land of Gold" BACKGROUND ON MAPS Additional Information on Historical Maps Map A Map B Map C Map D ... Map H Map A Anaximander of Miletus is credited as being the first person to draw a map of the world. This map by Hecataeus , also of Miletus, is similar to the one described by Herodotus. (Berthon, p. 19) Map B Herodotus had travelled extensively throughout the Mediterranean and collected information about Asia. Beyond India lay unknown and uninhabited deserts..."for the Indians live the furthest towards the east and the sunrise of all the Asians with whom we are acquainted or of whom we know by hearsay. Eastwards the country of the Indians is a sandy desert." (Wheatley, p. 124) "I cannot help but laughing at the absurdity of all the mapmakersthere are plenty of themwho show Ocean running like a river round a perfectly circular earth, with Asia and Europe of the same size." Herodotus said of the three known continents (Europe, Asia, and Africa) "Europe is as long as the other two put together, and for breadth is not, in my opinion, even to be compared with them." (Berthon, p. 19)

55. PSIgate - Browse Results hipparchus of rhodes This site provides a biography of the astronomerHipparchus (190120BC). The site is part of the MacTutor History http://www.psigate.ac.uk/roads/cgi-bin/psibrowse2.pl?limit=25&subject=509.2h&top

56. PSIgate - Physical Sciences Information Gateway Search Results of astronomy is provided with links to further information on selected key astronomers(Thales, Eratosthenes of Cyrene, hipparchus of rhodes, Euclid, Plato http://www.psigate.ac.uk/roads/cgi-bin/psisearch.pl?term1=Tycho Brahe&subject=Al

57. Reflections Vol20, No3, Aug 95 His better known successor, the ancient Greek astronomer hipparchus of rhodes,invented a magnitude system of stellar brightness in the second century BC. http://hsc.csu.edu.au/pta/mansw/reflections/vol21no1coupland.htm

Reflections on Senior Mathematics Shakes, quakes, and stars - Investigations with exponential and logarithmic functions Mary Coupland and Jules Harnett, University of Technology, Sydney Indices, logarithms, and exponential functions are widely used in scientific applications of mathematics as they provide models for a variety of physical situations. We think this can provide motivating examples in the teaching of these topics. In the workshop at the conference, we first investigated some activities based on everyday situations that could be used as starting points. We also provided some information that may go beyond the current school syllabus in mathematics, but which provides interesting background knowledge for teachers. Investigations that use indices and exponential functions I. Could you be related to a famous historical figure? n the number of - grandparents you have, and g the number of generations back they are? How many years ago do you think your - grandparents were alive? Find out where they were probably living and the population of that part of the world at that time. You may be related to someone famous! You may even be related to the person sitting next to you! II The disappearing function x is the number of shakes, and

58. Laputan Logic - The Clockwork Computer model of planetary movement around a fixed earth devised by Apollonius of Pergaand hipparchus of rhodes (later superceded by the heliocentric model of http://www.laputanlogic.com/story/2002/10/20-83388235.html

@import url("../../../laputanlogic.css"); Home Story So Far Quintessence Visions and Illusions ... Unsorted Search Laputan Logic Web Language Hat Barista PF Uncle Jazzbeau's Gallimaufrey ... "miserable failure" var site="sm1laputan" Laputan Logic Fanciful. Preposterous. Absurd. Archive If you've enjoyed anything you've found here, how about clicking on one of the Google Ads below? Each click tips me about 3 cents. The clockwork computer Posted on Wednesday 23 October 2002 to Story So Far In 1900 a sponge diver called Elias Stadiatos discovered the wreck of an ancient merchant ship off the tiny island of Antikythera near Crete. The corbita , dating from the first century B.C., was heavily laden with treasure of all kinds, original bronze life-size statues, marble reproductions of older works, jewelry, wine, fine furniture and one immensely complicated scientific instrument. The Antikythera mechanism was originally housed in a wooden box about the size of a shoebox with dials on the outside and a complex clockwork assembly of gears inscribed and configured to produce solar and lunar positions in synchronization with the calendar year . By rotating a handle on its side, its owner could read on its front and back dials the progressions of the lunar and synodic months over four-year cycles. The device has been estimated to be accurate to

59. Compare Prices And Read Reviews On The Extraordinary Voyage Of Pytheas The Greek surveying staff called a gnomon. The idea of parallel lines of latitude would notdeveloped for another couple centuries by one hipparchus of rhodes who used http://www.epinions.com/content_71323520644

Join Epinions Help Sign In Books All Categories Home Media Books The Extraordinary Voyage of Pytheas the Greek Overall rating: Reviewed by 1 Epinions user - Write a review Compare Prices View Details Read Reviews ... Subscribe to reviews on this product Read Review of The Extraordinary Voyage of Pytheas the Greek Review Summary About the Author Incredible Journey Jul 26 '02 (Updated Jul 27 '02) Author's Product Rating Pros Wonderful, informative reading Cons ..not much information about Pytheas. The Bottom Line Interesting background information, some speculation, a few silly comments, and a lot of fun. Full Review "The Extraordinary Journey of Pytheas the Greek" is somewhat misnamed. Pytheas was an actual person, born Massalia (present day Marseilles), a Greek colony, in the 4th century BCE. His own account of his travels, "On the Ocean," is no longer extant. Cunliffle relies on all that is left of it, that is, in excerpts recorded in the works of such classical writers as Strabo, Pliny the Elder, and a host of others, some well-known, others as almost obscure as Pytheas himself. Pytheas claimed to have sailed to England and "walked the breadth of it." He could not measure longitude, but had a crude way of measuring latitude by measuring the sun's height at noon on the summer solstice (or subtracting the days until the solstice) with a surveying staff called a "gnomon." The idea of parallel lines of latitude would not developed for another couple centuries by one Hipparchus of Rhodes who used Pytheas' measurements in plotting places in the far north. Pytheas also had a crude way of measuring distance by sea using a rule of thumb as to how far a ship could travel per day.

60. Images Of Mathematicians On Postage Stamps HILBERT, David. Issued by the Democratic Republic of the Congo in 2001 hilbert1.jpg.hipparchus of rhodes. Issued by Greece hipparchus1.jpg. HRONEC, Juraj. http://jeff560.tripod.com/

Images of Mathematicians on Postage Stamps RECENT CHANGES: On March 20, Francisco gomes_teixeira1.jpg and gomes_teixeira2.jpg were added. On March 17, lagrange.jpg, monge.jpg, and keldysh.jpg were replaced with better quality images. monge.jpg now has the block of four stamps in the set. On March 15, caratheodory.jpg and thales.jpg were replaced with higher quality images (actually both files were replaced with the same image, showing both stamps unseparated). On March 15, democ2.jpg, democ3.jpg, zu_chongzhi.jpg, zhang_heng.jpg, and nunes4.jpg were added. On March 13, avicenna7.jpg was added. On March 7, gazeta1.jpg and gazeta2.jpg were replaced with higher quality images. Thanks to Bert Jagers for these images. On Feb. 26, goldensection.jpg, moebius2.jpg, moebius3.jpg, impossible4.jpg, keldysh3.jpg, metric25.jpg, petrovic.jpg, schmidt2.jpg, calculate1.jpg, icm90.jpg, and bougainville.jpg were added. Thanks to Magnus Waller for these images. ABEL, Niels Henrik. Issued by Norway on April 6, 1929, upon the death centenary abel1.jpg

A  B  C  D  E  F  G  H  I  J  K  L  M  N  O  P  Q  R  S  T  U  V  W  X  Y  Z

Page 3     41-60 of 90    Back | 1  | 2  | 3  | 4  | 5  | Next 20