61. TravelFurther - Day Of The Week Calculator - Calendar History A Jesuit astronomer named christopher clavius was actually responsible fordesigning the new Gregorian calendar, although as you can see the Pope gets the http://www.travelfurther.net/dates/calendar.htm

Home Dictionaries Travel Writing Photography ... Guestbook An old saying about the birth day of a child goes: "Monday's child is fair of face, Tuesday's child is full of grace, Wednesday's child is full of woe, Thursday's child has far to go, Friday's child is loving and giving, Saturday's child works hard for a living, but the child who is born on a Sunday is bonny, blithe, good and happy." If might be interesting to check to see if any of these traits fits yourself or any other member of your family by finding out what day you were actually born on. The program that follows allows the user to enter a date in time and the computer will calculate and tell you what day of the week that your date in time actually fell on. This can be a birthday, or of course any date that you wish to check on. You can pick any date now, in the future, or in the past....with a few exceptions. Any date now or in future can be chosen, but there is a first date restriction for the past. The paragraphs that follow will tell what that first date restriction is, and will give you a brief history of the calendar which will in turn explain why the first date restriction is what it is. This formula will only work on dates that are after the 13th of September 1752. Why you may ask?

62. About Opera Mathematica “christopher clavius (15381612) His Contributions to Mathematics and clavius chair was filled by one of his pupils, christopher Grienberger, SJ, http://mathematics.library.nd.edu/clavius/about/about_page.html

Opera Mathematica of Christoph Clavius This Web site is humbly dedicated to the memory of Reverend Father Joseph MacDonnell, S.J. May 4, 1929 to June 14, 2005. Ad Majorem Dei Gloriam OVERVIEW ABOUT CLAVIUS Biography Links ABOUT THE CLAVIUS PROJECT Translation into English Navigating the site Missing pages History of the digitization project Bibliographic information Links OVERVIEW The Opera Mathematica ABOUT CLAVIUS Biography of Clavius Joseph MacDonnell, S.J., July, 2001 Some time ago, a New York Times Philosophical Transactions of the Royal Society of London Click here for the rest of the article. Links to Information about Clavius Jesuit Scientists, http://www.faculty.fairfield.edu/jmac/sj/scientists/clavius.htm The Galileo Project, http://galileo.rice.edu/sci/clavius.html Between Copernicus and Galileo: Christoph Clavius and the Collapse of Ptolemaic Astronomy Gregorian Reform of the Calendar: Proceedings of the Vatican Conference to Commemorate its 400th Anniversary Studies in History and Philosophy of Science Archivum Historicum Societatis Jesu The MacTutor History of Mathematics archive, Biographies Index

63. Earliest Uses Of Symbols For Fractions 1, page 317). In 1593 christopher clavius (15371612) used a period to separatethe units and tenths digits in a table of sines in Astrolabe. http://members.aol.com/jeff570/fractions.html

Earliest Uses of Symbols for Fractions Last revision: Mar. 4, 2004 Earliest notations for fractions. The Babylonians wrote numbers in a system which was almost a place-value (positional) system, using base 60 rather than base 10. Their place value system of notation made it easy to write fractions. The numeral has been found on an old Babylonian tablet from the Yale collection. It is an approximation for the square root of two. The symbols are 1, 24, 51, and 10. Because the Babylonians used a base 60, or sexagesimal, system, this number is 1 x 60 + 24 x 60 + 51 x 60 + 10 x 60 , or about 1.414222. The Babylonian system of numeration was not a pure positional system because of the absence of a symbol for zero. In the older tablets, a space was placed in the appropriate place in the numeral; in some later tablets, a symbol for zero does appear but in the tablets which have been discovered, this symbol only used between other symbols and never in a terminal position. The earliest Egyptian and Greek fractions were usually unit fractions (having a numerator of 1), so that the fraction was shown simply by writing a numeral with a mark above or to the right indicating that the numeral was the denominator of a fraction. Ancient Rome.

64. December 2004 christopher clavius The picture at the right is of the mathematician and astronomerchristopher clavius, the expert who advised Pope Gregory XIII to remove http://www.skeptics.com.au/history/2004/12december.htm

****JavaScript based drop down DHTML menu generated by NavStudio. (OpenCube Inc. - http://www.opencube.com)**** //Document Level Menu Settings cddcodebase = "../../menus/" cddcodebase735068 = "../../menus/" cddactivate_onclick = false cddshowhide_delay = 50 cddurl_target = "_self" cddurl_features = "resizable=1, scrollbars=1, titlebar=1, menubar=1, toolbar=1, location=1, status=1, directories=1, channelmode=0, fullscreen=0" cdddisplay_urls_in_status_bar = true cdddefault_cursor = "hand" What's old from the front page December 2004 Front Page History These are items which have appeared on the front page of the site in the past and which attracted enough attention to warrant keeping them on the site somewhere. December 2, 2004 The New Inventors . There will be lots more about the awards and the convention here soon. December 9, 2004 After spending time near the Institute for Creation Research and some Tijuana cancer clinics, SkeptoBear felt the need for some contact with reality. Luckily, he met Elvis in Las Vegas. The King was able to cheer him up by reminding him that he could put his bad experiences in the past by remembering the words of the philosopher, Arthur Crudupp, who said "that's all right now mama, just any way you do". The full story of the Bear's Progress will be here early in 2005, together with his reminiscences of James Randi's 2004 Amazing Meeting in Las Vegas. The 2004 Australian Skeptics National Convention was described as "The best ever" by the President of the International Skeptics Committee in his speech at the Closing Ceremony. This will be his last Convention as President of the ISC, but if you are thinking about applying for the job, please remember that it gets very cold in Lausanne and you have to be fluent in both English and Pleiedian.

65. Old Burial Hill | Cluster By The Pond 1 Pope Gregory XIII chose the calendar formulated by the Jesuit mathematician andastronomer, christopher clavius. On February 24, 1582, he issued a papal http://www.oldburialhill.org/pond/pond_cluster_01a.html

Over the hill, on the side away from the ocean, where the burial grounds adjoin Redd's Pond, is a tranquil spot with a small cluster of headstones. The Oldest Gravestone Mary Lattimer (1681) The oldest dated stone in the graveyard belongs to Mary Lattimer. HERE LYES BURIED Y e BODY OF MARY WIFE TO CHRISTO- PHER LATTIMER AGED 49 YEARS DECD. Y e 8 OF MAY Christopher Lattimore (1690) Elizabeth Waters (1698/9) Near Mary Lattimer's stone is that of her husband, Christopher Lattimore, the original slate now encased in granite. The spelling of the last name differs on these two stones, which is not unusual for this period. Their daughter, Elizabeth Waters, is also buried here. These inscriptions are framed by two-sided decorative borders. HERE LYES BURIED Y e BODY OF M r CHRISTOPHER LATTIMORE AGED ABOUT 70 YEARS DEC D . OCTOBER Y e t HERE LYETH BURIED Y e BODY OF ELIZABETH WATERS Y

66. The Acceptance Of Correct Ideas In Science A case in point is clavius, author of the Gregorian calendar reform. At first avehement opponent of Galileo, christopher clavius, with other Jesuits of the http://www.varchive.org/ce/accept.htm

The Acceptance of Correct Ideas in Science Should the question be asked why my books caused such great enmity and agitation (several writers have compared it with the violent natural events I described), the answer should not be simplified into the formula—“because the theories argued in them run counter to the established views.” Such an explanation requires elaboration within a larger historical perspective. Fundamentally, it has been true that any new concept that carried seeds of truth and dispensed with many accepted tenets was apt to provoke some opposition. But this is not all. There must be deeper reasons for the extraordinary outburst on the part of the scientific community that greeted and pursued my works. This manifested itself in immense efforts to make me appear to be unscientific or unscholarly, an outcast, and my work of no worth. The cases of Galileo, Darwin, and Pasteur were often brought into comparison by many reviewers and numerous correspondents. But. without losing historical perspective, the attacks in these cases were far less vituperative, far more mixed with praise, than the attacks made on the substance of Worlds in Collision and Earth in Upheaval

67. Month@Everything2.com and the Jesuit astronomer christopher clavius went to work on this problem . clavius had allowed for such discrepancy and suggested that three out of http://www.everything2.com/index.pl?node=month

68. The University Of Scranton - Matteo Ricci, S.J. Later, at the Roman College, he studied under christopher clavius, the famousJesuit polymath, astronomer, humanist and Renaissance Man. http://matrix.scranton.edu/about/ab_matteo_ricci.shtml

Message from the President Current Events University News ... Campus Visit Prog. Matteo Ricci, S.J. The Frontispiece The Wise Man from the West .) Painted in 1610 by the Chinese brother Emmanuel Pereira (born Yu Wen-hui), who had learned his art from the Italian Jesuit, Giovanni Nicolao. The age is incorrect: Ricci died during his fifty-eighth year. Probably he himself believed he was older than that, for as ealy as 1571, when he entered the novitiate, he could not be certain whether his age was eighteen or nineteen. The portrait was taken to Rome in 1616 and displayed at the Jesuit house together with paintings of Ignatius of Loyola and Francis Xavier. It still hangs there. Who was Matteo Ricci? Matteo Ricci was an Italian Jesuit priest and missionary, scientist, humanist, and educator–a Renaissance Man. He ranks as the most cultivated man of his time and "one of the most remarkable and brilliant men of history." The founder of the modern Chinese Church, Matteo Ricci is respected as a national figure even by the Chinese Communist Party. For Ricci, learning and academic excellence in the Jesuit way served as a magnet that could draw people to God. As with all things, learning comes from God, and finally, nothing is really secular. An authority on mathematics, astronomy, apologetics, literature, popular catechesis, poetry, and a lover of art and music, Ricci fascinated and attracted the Chinese intelligentsia. He approached evangelization primarily, but not solely, through the scientific apostolate.

69. Christopher Clavius, Calendar Reformer, Dies (birth Date Unknown) February 6 In christopher clavius, calendar reformer, dies (birth date unknown) February 6,1612 in history. http://www.brainyhistory.com/events/1612/february_6_1612_35961.html

Atlas Dictionary Encyclopedia Geography ... Add "Today in History" or "Today's Birthdays" to Your Site - it's Easy! Web brainyhistory.com February 6, 1612 in History Christopher Clavius, calendar reformer, dies (birth date unknown) Related Topics: birth Calendar Christopher date ... unknown Related Year: Additional Information: February 6 Service to others is the rent you pay for your room here on earth. - Muhammad Ali Quotes History Home About Us Inquire Privacy Terms

70. UW IMAP Software--UW IMAP Server Documentation Most of the mathematical work was done by Father christopher clavius, SJ Theimmediate correction that was adopted was that Thursday, October 4, http://www.washington.edu/imap/documentation/calendar.txt.html

Search Directories Reference Tools UW Home ... IMAP Information Center UW IMAP Server Documentation Back to IMAP Server Documentation IMAP Information Center Contact us Modified: December 14, 2004

71. Dundee Central Library - Ivory Collection clavius, christopher Euclidis posteriores libri IX. Accessit liber XVI. De solidorumregularium cujus libet Maire, christopher et Boscovich, R. Josepho http://www.dundeecity.gov.uk/centlib/ivory/ivorycat.htm

Dundee Central Library - Ivory Collection Academie Royale des Sciences et Belles Lettres de Prusse Dissertations sur la theorie des cometes qui ont concouru au prix propose par l'academie. Utrecht: Barthelemy Wild, 1780 Sir James Ivory Collection pp. 239 + VIII + 55 Adhemar, Joseph Alphonse Cours de mathematiques a l'usage de l'ingenieur civil. Part I Arithmetique; Part II Geometrie descriptive. Paris: Carilian-Goeury, 1832 Sir James Ivory Collection 3 vols bound in one. pp. 80 + 160 + 30. Adhemar, Joseph Alphonse Cours de mathematiques a l'usage de l'ingenieur civil. "Geometrie descriptive" planches. Paris: Carilian-Goeury, n.d. Sir James Ivory Collection pp. 44. imp. 4to. missing. Airy, G. B. Gravitation: an elementary explanation of the principle perturbations in the solar system. London: Charles Knight, 1834 Sir James Ivory Collection pp. XXIII + 215. Alembert, Jean-le-Rond-d' Essai d'une nouvelle theorie de la resistance des fluides. Paris: David, 1752

72. Jesuits And The Sciences: 1540-1995, Bibliography Lattis, James M. christopher clavius and the Sphere of Sacrobosco The Roots ofJesuit Astronomy on the Eve of the Copernican Revolution. http://libraries.luc.edu/about/exhibits/jesuits/jesbib.shtml

Loyola University Chicago Libraries Loyola Home Site Search Ask a Question Jesuits and the Sciences, 1540-1995: Bibliography Books Bach, Jose Alfredo. Athanasius Kircher and his Method: A Study in the Relations of the Arts and Sciences in the Seventeenth Century. (Thesis (Ph.D): University of Oklahoma, 1985). Baldwin, Martha. Athanasius Kircher and the Magnetic Philosophy. (Thesis (Ph.D): University of Chicago, Department of History, 1987). Bangert, William V. A History of the Society of Jesus. 2nd ed., rev. and updated (St. Louis: Institute of Jesuit Sources, 1986). Hamy, Alfred, ed. (Paris: Chez l'Auteur . . ., 1893). Harris, Steven. Jesuit Idealogy and Jesuit Science: Scientific Activity in the Society of Jesus, 1540-1773. (Thesis (Ph.D.): University of Wisconsin - Madison, 1988). Healy, George Robert. Mechanistic Science and the French Jesuits: a Study of the Responses of the Journal de Trevoux (1701-1762) to Descartes and Newton. (Thesis (Ph.D.): University of Minnesota, 1956).

73. Williamstown Theatre Festival christopher clavius, Craig Owens. Two Scholars, Peter Belin. James Clayburgh.Two Monks, christopher Reeve. Joe Gilinsky. Infuriated Monk, Marshall Oglesby http://www.wtfestival.org/performances/detail.php?PerformanceID=150

74. UTILITAS MATHESEOS In the 16th century, christopher clavius participated in creating the conceptionof teaching mathematics at the Jesuit colleges. http://www.nkp.cz/vystavy/utilitas/e_utilitas.htm

UTILITAS MATHESEOS Jesuit Mathematics in the Clementinum between 1602 and 1773 Prague, National Library of the Czech Republic, Mirror Chapel The exhibition is dedicated to the works of Jesuits, who had worked as professors of mathematics in the Clementinum, regardless when and where the particular work was published. There are also students´ records of lectures as well as dissertations completed under the leadership of the Jesuit professors, and also some writings by out-of-Prague Jesuits, who influenced teaching mathematics in the Clementinum. Ratio atque institutio studiorum S.J. privatis However, the Jesuits understood mathematics far wider than we do today. Their conception continued a tradition of the medieval quadrivium musica The oldest Jesuit mathematical manuscript preserved in the Clementinum is dated of 1602 (it originated in Graz). It is a record of lectures of Joannes Baptista l´Abbe , Austrian professor of mathematics, who worked in the Clementinum in 1604. With him, the manuscript came in Prague, where it has remained. The oldest preserved mathematical manuscript that had originated right in Prague, is that called

75. Galileo And The Bible christopher clavius, SJ, Opera mathematica (Moguntinae, 161112). GV Coyne, SJ, M.Heller and J. Zycinski, The Galileo Affair A Meeting of Faith and http://www.galilean-library.org/bible.html

HOME ABOUT MANUSCRIPTS THE GROVE ... CONTACT Galileo and the Bible By Paul Newall The so-called Galileo Affair occurred within a variety of contexts, some – like the invention of the telescope – recent and some with an ancient pedigree. This paper looks at examples of the latter, centring on the issue of interpreting the Bible. "An unresolved problem and an injunction on who could meaningfully interpret the Bible left an air of inevitability that a challenge would soon arrive to test the Church." Links: Discuss this article HPS Home Manuscripts Home HPS Reading Online resources: There are many sites that provide links to philosophical pages, works or references. The Stanford Encyclopedia of Philosophy is easily the most comprehensive available, with in-depth articles and links to further reading. Written by experts, it is the best to refer to when either supporting an argument/summary or looking for more information. It has many entries relating to the philosophy of science. The British Journal for the Philosophy of Science is worth reading for the book reviews alone. Philosophy of Science is the University of Chicago's Journal.

76. 2sc1 by Pope Gregory and christopher clavius). Walter Ziobro continued Now theactual tropical year has been measured to 365.242198786.14*10**-6Te days of http://home.earthlink.net/~scassidy/CALNDR-L/97/MAR/2sc1.html

Subject: Re:: Leap Week Calendar Proposal by W.Z. Date: Sun, 02 Mar 1997 13:28:43 -0800 From: To: CALNDR-L@ECUVM.CIS.ECU.EDU Walter Ziobro wrote: > Under the system described here [leap-week], both the Greg. > Calendar and the Leap-Week Calendar have 146,097 days in > 400 years. While this is quite accurate, it is not quite > perfect, being too long by one day in about 3,320 years. Simon Cassidy responds: Such statements as these are false for reasons I have given many times already during this discussion. But, here I go again (for Walter's sake at the least). The average Gregorian calendar year is 365.2425 days. The accuracy of the Gregorian calendar must be judged against the average interval between Vernal Equinoxes, since the Gregorian reform was intended to prevent the drift of the astronomical Vernal Equinox away from the Nicene "ecclesiastical Vernal Equinox" date (March 21st.). The average interval between Vernal Equinoxes is 365.2424 days (to the nearest ten-thousandth of a day) and will probably remain so for the next few millenia (it is increasing slowly towards a maximum between 365.2424 and 365.2425 calendar days).

77. Mathematics Magazine: October 2002 The primary driving force behind the norms pertaining to mathematics in the Ratiowas christopher clavius, a Jesuit mathematician at the Roman College, http://www.maa.org/pubs/mag_oct02_toc.html

Search MAA Online MAA Home Mathematics Magazine Contents for October 2002 ARTICLES A Lotka-Volterra Three-species Food Chain Erica Chauvet, Joseph E. Paullet, Joseph P. Previte, and Zac Walls In this paper, we completely characterize the qualitative behavior of a linear three species food chain where the dynamics are given by classic (non-logistic) Lotka-Volterra type equations. The dynamics of the associated system are quite complicated, as the model exhibits degeneracies, which make it an excellent instructional tool whose analysis involves advanced topics such as: trapping regions, nonlinear analysis, non-isolated equilibria, invariant sets, and Lyapunov-type functions. Proof by Poem: The RSA Encryption Algorithm Daniel G. Treat Take two large prime numbers, q and p . Find the product n e d is e 's inverse, then you're done! For sending m raised to the e reduced mod n gives secre- c Teaching Mathematics in the Seventeenth and Twenty-first Centuries Dennis C. Smolarski, S. J. The 1599 Ratio Studiorum of the Jesuit Order guided the educational practice in Jesuit Schools for several centuries and provided for a role for mathematics unusually prominent for sixteenth century Italy. It included suggestions for student involvement in the learning of mathematics that today might be called "student colloquia" and "interactive review sessions." The primary driving force behind the norms pertaining to mathematics in the Ratio was Christopher Clavius, a Jesuit mathematician at the Roman College, who was convinced about the importance of including mathematics in the curriculum.

78. Suggested Authors: HIST 320, Renaissance Creativity theology; clavius, christopher aka Christoph Klau (15381612), science;Clichtove, Josse van (1472/73-1543), theology; Colombo, Matteo Realdo (ca. http://www.isu.edu/~owenjack/rencr/authors.html

This page offers a list of suggested authors for the student project for J. B. Owens's spring 2004 upper-division undergraduate course, History 320, Renaissance Creativity . This course is part of the core curriculum in comparative and world history of the Department of History, Idaho State University. The sole purpose of this page, and all of the related pages on this server that are linked to it, is to provide an orientation for those students enrolled in History 320. You may return to the course main page or to the syllabus Renaissance Creativity: Author List The project is due on 23 April at 2:30 p.m. You must send it to my e-mail address (owenjack@isu.edu), following carefully the instructions on the project page . In class on 27 January, you will select the author on whose publications you will do research. By 2:30 p.m. on Friday, 7 February, you will mail me (owenjack@isu.edu) a preliminary bibliography. This page provides a list of suggested authors on which to focus for the student research project for J. B. Owens's fall 2004 upper-division course Renaissance Creativity . Questions and comments may be sent to me at my e-mail address (owenjack@isu.edu), or if you prefer, you may send me a message now by selecting this button:

79. SPACE.com -- The Vatican Observatory Is One Of The Oldest Astronomical Institute Direct Vatican support for astronomy dates to 1582, when Pope Gregory XIII askedJesuit mathematician christopher clavius to help reform the calendar. http://www.space.com/scienceastronomy/astronomy/vatican_observe_000716.html

advertisement Arecibo: Celestial Eavesdropper ESA Celebrates 25 Years in Space The Vatican Observatory is one of the oldest astronomical institutesin the world. By Jim Erickson Special to SPACE.com posted: 08:00 am ET 16 July 2000 In a first-floor classroom of the papal summer palace southeast of Rome, Vatican Observatory astronomer Guy Consolmagno keeps careful watch over the pontiffs extensive collection of space aliens. Each is stored in a carefully labeled plastic bag tucked inside a wooden drawer. Outside, telescope domes stand as silent sentinels on the roof of the 400-year-old palace. The popes 1,000 extraterrestrials are meteorites and Consolmagno is their curator. He likes to think of them as visitors who fell to Earth from space to tell him stories about their origins and travels. "This is our way of finding God." A graduate of the Massachusetts Institute of Technology and the University of Arizona, Consolmagno sees nothing incongruous about storing chunks of interplanetary debris next to the courtyard where Pope John Paul II presides over Mass on summer mornings. Like the telescopes studding the roof of Castel Gandolfo, the 200-year-old meteorite collection is a tangible expression of the Vaticans long-standing commitment to scientific research, he said.

80. Leap Year Day Math Lesson Plan, Thematic Unit, Activity, Worksheet, Or Mathemati christopher clavius recalculated the data. What did he do with his results anda solution? 9) Who was the Pope and what did he do? http://www.lessonplanspage.com/MathScienceCIOLeapYearDayWebsite48.htm

Features: Special Features: Improve Writing Efficient Reading Sylvan Learning Teaching Jobs ... Teacher Magazines Site Information: EdScope Sites: Join Newsletter: Search This Site: Vote For Us: @ SitesForTeachers @ Teach-nology Leap Year Day Visit Other About Search Forums Newsletter ... Tell-A-Friend Printable Version for your convenience! Title - Leap Year Day by - Lorah A. Perry Grade Level - 4-8 Today is a special and unusual day that happens only once every 4 years. To find out about this day go here to answer the following questions. 1) When did the practice of adding a day to the calendar begin? 2) Because everyone in the world had different time measuring tools, there were problems. What were the 4 problems listed? 3) To temporarily solve this how many days were added to the Julian Calendar in 46 BC? 4) What did the astronomer Sosigenes calculate the length of a year to be? 5) What did Sosigenes use to find these calculations? 6) What was his solution? 7) Why was the day added to February? 8) This was not a permanent solution. Christopher Clavius recalculated the data. What did he do with his results and a solution? 9) Who was the Pope and what did he do?

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