81. Hipparchus http://www.math.uvic.ca/courses/math415/Math415Web/greece/gmen/hippar.html

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82. Lecture 7: Brightnesses Of Stars Magnitude System. Traditional system dating to classical times (Hipparchusof rhodes, c. 300BC). Rank stars into 1st, 2nd, 3rd, etc. magnitude. http://www-astronomy.mps.ohio-state.edu/~pogge/Ast162/Unit1/bright.html

Astronomy 162: Prof. Pogge, MTWThF 11:00 Lecture 7: "Starlight, Starbright" Stellar Brightness Key Ideas: Luminosity of a star: total energy output independent of distance Apparent Brightness of a star depends upon distance luminosity Inverse Square Law of Brightness brightness decreases as d How "Bright" is an Object? We must define the "Brightness" of an object quantitatively. Two ways to quantify brightness: Intrinsic Luminosity: Measures the Total Energy Output. Apparent Brightness: Measures how bright it appears to be as seen from a distance. Luminosity Luminosity is the total energy output from an object. Measured in Power Units : Energy/second emitted by the object (e.g., Watts) Independent of Distance The Luminosity of a star is a measurement of its total energy production. Apparent Brightness Measure of how bright an object appears to be as seen by a distant observer. What we measure here on earth (an "observable"). Measured in Flux Units Energy/second/area received from the object. Depends on the Distance to the object.

83. Prior Astronomer Next Astronomer Back To List He observed between 146 and 127BC from the city of rhodes and his cataloguementions the nebulae M44 and the Perseus double cluster. http://www.astrosurf.com/cielextreme/page98E.html

Prior Astronomer Next Astronomer Back to List This greek philosopher compiled the first catalogue of stars (at least the first we keep the trace of) containing about a thousand. He observed between 146 and 127BC from the city of Rhodes and his catalogue mentions the "nebulae" M44 and the Perseus double cluster. He introduced the notion of magnitude to estimate stars' brightness. The catalogue of PTOLEMY is largely inspired by this catalogue.

84. Astronomy Links - Early Astronomy Eratosthenes of Cyrene St Andrew's University page. hipparchus ofRhodes St Andrew's University page; Cornell University page. http://www.olemiss.edu/courses/astr103/Topics/Ancient-L.html

University of Mississippi Astronomy Main Lectures News Resources ... Lab Early Astronomy - Until the XV Century (See also Renaissance astronomy and modern History of astronomy History of Astronomy General: Windows to the Universe page Lecture Notes: Jose Wudka (ucr.edu) history of cosmology notes Archaeoastronomy In General: Windows to the Universe page Megaliths: Stone Pages site Antiquity and Topics Aristarchus of Samos: St Andrew's University page Aristotle: St Andrew's University page ; 2002 Rowan-Robinson article Eratosthenes of Cyrene: St Andrew's University page Hipparchus of Rhodes: St Andrew's University page ; Cornell University page Ptolemy, Claudius: Galileo Project page ; St Andrew's University page The Sun: NASA sponsored project on The Sun in Time Medieval Astronomy Giordano Bruno: The Radical Academy page Nicholas of Cusa: St-Andrews University page Astronomy in Different Cultures Arabs: A. Zahoor's site on Muslim scientists. Babylonians: St Andrew's University pages on Babylonian mathematics and numerals Greeks: Greek cosmology page Mayas: Maya astronomy page ; The Dresden Codex text and image pages.

85. The Famous Mathematician Internet Project The Famous Mathematician Internet Project. Mathematics is a living,breathing, vibrant discipline connected to many walks of life. . http://198.190.226.3/users/ham/famousmath.html

The Famous Mathematician Internet Project "Mathematics is a living, breathing, vibrant discipline connected to many walks of life." An important aspect of understanding mathematics is learning about its originators, discoverers, and explorers. The vast real-life applications of mathematics today would not be possible if it had not been for the dedication and commitment of a dynasty of mathematicians. Use the World Wide Web to find information about YOUR chosen famous mathematician. Continue answering the questions on "The Famous Mathematician Internet Project" Handout. Your responses will be graded as a point assignment. Begin the construction of your famous mathematician resume. Rene Descartes Rene Descartes Additional Information Descartes' Method and Coordinate Geometry Diophantus of Alexandria ... Eratosthenes of Cyrene (276-197 B.C.) Eratosthenes Maurits Cornelius Escher (M.C. Escher) M.C. Escher Euclid of Alexandria (365-300 B.C.) Euclid: His Works and His Influences The Life of Euclid Leonardo Pisano Fibonacci History of Fibonacci and the Golden Ratio ... Pythagoras of Samos (580-500 B.C.) The Pythagorean Theorem The History of Pythagoras Pythagoras' Historical Profile John Venn ... Apollonius of Perga (262-190 B.C.)

86. Mabon - Overview By Christina This is known as the precession of the equinoxes (first noted by Hipparchusaround 120 BC and explained in 1687 by Sir Isaac Newton). http://www.witchvox.com/holidays/mabon/mabon_details.html

Popular Holidays Northern Hemisphere Yule Dec 22 Imbolc Feb 2 Ostara Mar 21 Beltaine May 1 Midsummer Jun 21 Lughnasadh Aug 1 Mabon Sep 21 Samhain Oct 31 Southern Hemisphere Yule Jun 21 Imbolc Aug 1 Ostara Sep 21 Beltaine Oct 31 Midsummer Dec 22 Lughnasadh Feb 2 Mabon Mar 21 Samhain May 1 Also Check out... Mike Nichols's Incredible... Witches' Sabbats NOTE: The Witches' Voice does not teach Witchcraft, Wicca or Paganism, nor do we believe in posting spells on the internet. On these pages we DO offer the basics of Neo-Paganism in an effort to give the general public a feel for this earth-based spiritual path. The words on these pages are those of the noted author and may or may note be reflected or endorsed by the Witches' Voice Inc. It is our policy to always post an email link to the author, feel free to contact them directly with any comments you may have. VoxPath: Home holidays mabon / Mabon - Overview by Christina Posted: Views: Autumn Equinox around September 22nd also known as: Mabon, Alban Elfed, Winter Finding, Mikeli, Harvest Moon Festival, Mea'n Fo'mhair The Second or Continuing Harvest. Now, as at Ostara, the days and nights are equal once again. gardens are in full bloom and heavy with nature's bounty. There is a slight nip in the air already and preparations begin to prepare for the long cold months which are to come.

87. WEBbyRegion http://jwilson.coe.uga.edu/EMT668/EMT668.Student.Folders/MesaVilma/WebSites

History of Mathematics WWW Sites Sorted by Region/Culture Compiled and annotated by students in the History of Mathematics class Department of Mathematics Education University of Georgia Alexandria http://pharos.bu.edu/Egypt/Alexandria/ Alexandria. Alexandria past and present http://pharos.bu.edu/Egypt/Alexandria/History/legacy.html History of Alexandria. Links to famous Egyptian mathematicians All http://www.siue.edu/~dcollin/index.html Math King's Court. Many Math related subjects. http://www.siue.edu/~dcollin/mathfame.html Hall of Great Mathematicians. Mathematicians. http://www.tufts.edu/~kkinel/sitereview.htrnl History Site Review. History and Learning Page. http://www.math.upenn.edu/MathSources.html Penn Mathematics- Mathematics Sources. Good for Research. http://www.mystery.com/WAM/resources/history.html Women and Mathematics. Good links to women mathematicians. http://www.harpercollins.com/College/mkatz.html The History of Mathematics. Comments: General links to History of Mathematics topics. http://www.mnsfld~edu/depts/matb/othersites.html

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