41. Gerardus Mercator Rupelmundanus, M. Watelet, 9061533139 - Boek gerardus mercator Rupelmundanus. 15121594. Gerard mercator wordt algemeenbeschouwd als de grote vernieuwer van de cartografie in de zestiende eeuw. http://www.amerigo.nl/biografie/mercator/9061533139.html

amerigo.nl M. Watelet (red) fotoboek gebonden 34 x 26 cm 448 pagina's 350 kleur illustraties 100 z/w illustraties isbn 9061533139 mercator bestel amerigo.nl Gerardus Mercator Rupelmundanus Gerard Mercator wordt algemeen beschouwd als de grote vernieuwer van de cartografie in de zestiende eeuw. Studerend en werkend in de wetenschappelijke centra Leuven en Duisburg, in voortdurend contact met talrijke briljante persoonlijkheden van zijn tijd, enorm belezen en veelzijdig, verschijnt deze Vlaming, geboortig uit Rupelmonde, ons als een rasechte humanist: geen beoefenaar van één geïsoleerd onderdeel van de wetenschap maar een geleerde die een echte kosmografie trachtte te realiseren. Het is echter vooral als cartograaf dat hij beroemd is gebleven. Mercators kaart van Europa van 1554 was een meesterwerk van kritische nauwkeurigheid, en zijn wereldkaart uit 1569 introduceerde een grote vernieuwing in de navigatie: de Mercatorprojectie of cilinderprojectie met wassende breedtegraden, de bekroning van dertig jaar studie om de zeekaarten te verbeteren. Een internationale schare auteurs belicht de belangrijkste aspecten van Mercators oeuvre, zijn rijke persoonlijkheid en zijn historische betekenis. In de gediversifieerde iconografie vormen de kaarten van Mercator uiteraard een fascinerende rode draad. Aldus krijgt de lezer een schitterend beeld van de zestiende eeuw, de dageraad van de moderne tijd, en van een vaan haar meest prominente vertegenwoordigers.

42. Gerardus Mercator CDROMs. gerardus mercator Atlas sive Cosmographicae Meditationes de Fabrica Mundiet Fabricati Figura Publisher Original Duisburg. gerardus mercator, 1595. http://kaartenzaal.geog.uu.nl/Softwaresite/Beschrijvingen/Mercator.html

Map Collection of the Faculty of Geographical Sciences General information Address Opening hours and rules ... Software in the map library Software CD-ROMs Gerardus Mercator Atlas sive Cosmographicae Meditationes de Fabrica Mundi et Fabricati Figura Publisher: Original: Duisburg. Gerardus Mercator, 1595. This edition: United States, Octavo, 2000. CD-ROM Minimal System Requirements : Windows: Pentium processor, Windows 95/98, 8 MB RAM. Macintosh: PowerMacintosh with 8 MB RAM. UNIX : SUN OS, Solaris, HP-UX, SIlicon Graphics IRIX or IBM AIX. Description : This CD-ROM is the digitised version of the above mentioned atlas of Gerardus Mercator. The original atlas is property of the Lessing J. Rosenwald collection in the Library of Congress. All the pages of this atlas can be viewed. You can zoom in on the pages to see details, which are hard to see with the naked eye. You can also read and search the first complete English translation of the atlas. Screendump :

43. Mercator Projection by Matt T. Rosenberg. The mercator projection was developed in 1569by gerardus mercator as a navigation tool. Like the Peters map http://geography.about.com/library/weekly/aa030201b.htm

zfp=-1 About Homework Help Geography Search in this topic on About on the Web in Products Web Hosting Geography with Matt Rosenberg Your Guide to one of hundreds of sites Home Articles Forums ... Help zmhp('style="color:#fff"') Subjects ESSENTIALS World Atlas and Maps Geography Answers Glossary ... All articles on this topic Stay up-to-date! Subscribe to our newsletter. Advertising Free Credit Report Free Psychics Advertisement Peters Projection vs. Mercator Projection Part 2: Mercator Projection More of this Feature Part 1: Peters Projection Part 3: Alternatives Join the Discussion "What do you think about the Peters vs. Mercator Projection debate? Do you like either projection?" Your Guide, Matt Related Resources Cartography Map Projections Maps by Matt T. Rosenberg The Mercator projection was developed in 1569 by Gerardus Mercator as a navigation tool. Like the Peters map, the grid is rectangular and lines of latitude and longitude are all parallel. The Mercator map was designed as an aid to navigators since straight lines on the Mercator projection are loxodromes or rhumb lines representing lines of constant compass bearing perfect for "true" direction. If a navigator wishes to sail from Spain to the West Indies, all they have to do is draw a line between the two points and the navigator knows which compass direction to continually sail to reach their destination. The Mercator map has always been a poor projection for a world map yet due to its rectangular grid and shape, geographically illiterate publishers found it useful for wall maps, atlas maps, and maps in books and newspapers published by non-geographers. It became the standard map projection in the mental map of most westerners. The argument against the Mercator projection by the pro-Peters folks usually discusses its "advantage for colonial powers" by making Europe look a lot larger than it actually is on the globe.

44. NA - Canada At Scale Maps Of Our History Catalogue entry mercator, gerardus, 15121594. Septentrionalium terrarum descriptio/ per Gerardum mercatorem. — Scale ca. In mercator, gerardus. http://www.archives.ca/05/0514/3_0_exp/05140336_e.html

45. AN - Le Canada à L'échelle Les Cartes De Notre Histoire Translate this page Notice catalographique mercator, gerardus, 1512-1594. Septentrionalium terrarumdescriptio / per Gerardum mercatorem. In mercator, gerardus. http://www.archives.ca/05/0514/3_0_exp/05140336_f.html

46. Efímera: Discussion On Gerardus Mercator Translate this page esta entrada http//www.efimera.org/cgi-bin/mt-tb.cgi/17 A continuación apareceuna lista de sitios que hacen referencia a 'gerardus mercator' desde efímera http://www.efimera.org/cgi-bin/mt-tb.cgi?__mode=view&entry_id=24

47. Efimera.org: Hipertextos Efímeros Translate this page 27 de Septiembre de 2002 gerardus mercator. Estoy leyendo Mapas de sitios web, dePaul Kahn y Krzysztof Lenk, y creo que me estoy aficionando a la cartografía. http://www.efimera.org/archives/000024.html

portada acerca de archivos enlaces ... contacto 27 de Septiembre de 2002 Gerardus Mercator Estoy leyendo Mapas de sitios web , de Paul Kahn y Krzysztof Lenk , y creo que me estoy aficionando a la cartografía. En Octavo , el proyecto de Adobe orientado a la edición digital de libros antiguos, encontré esta versión cd-rom del Atlas de Mercator , creador de la famosa proyección con los polos distorsionados, que nos hemos acostumbrado a entender como representación válida de nuestro planeta. Artículos relacionados: Películas efímeras La imagen y la palabra Corto Maltés Publicado por juanjo seixas Archivado en Cultura 10:03 AM Referencias (0) Comentarios a esta entrada la cartografía, y la elaboración de mapas no como representación de la realidad, sino como la realidad misma plasmada a través de proyecciones matemáticas, es también uno de mis temas favoritos...el uso y el abuso de los mapas fomentó la creación de una imaginación geográfica oficial, pocas veces contestada...poco a poco vamos desmontando el poder de las geografías oficiales, y cuestionando las construcciones de la realidad...que bueno... sobre el tema hay mucho, pero os recomiendo, para empezar, Geopolitics: re-visioning the world politics, de John Agnew...el capítulo 1 lo cuenta muy bien...pronto se publicará en castellano (espero)

48. Gerardus Mercator 18,000 m 3 Trailing Suction Hopper Dredger gerardus mercator, http://www.ihcholland.com/B_ihc_dredging/B03/B3.4/b03.4_gerardus.htm

Gerardus Mercator Principal characteristics: Name Gerardus Mercator Type Trailing suction hopper dredger Year of construction Owner Ondernemingen Jan de Nul Builder IHC Holland Length overall Length bpp Beam Depth Draught, int. freeboard Draught, dredging mark Hopper capacity Max. loading capacity 27,650 t Deadweight at 11.51 m 29,150 t Suction pipes diameter Discharge pipe diameter Dredging depth Suction pumps, double-walled Discharge pumps power Submerged dredgepump Main engines Shaft generators Auxiliary engines Harbour engine Jet pumps Bow thrusters Electric portal crane 45 t Laden speed 15.5 knots Accommodation 40 persons Back to index PDF - 36 kB

49. Articles On Art Abraham Ortelius. gerardus mercator Friday, March 22, 2002. gerardus mercatorgerardusmercator was a geographer, cartographer and mathematician born in Flanders. http://www.artelino.co.uk/forum/articles.asp?mey=5

50. Mercator Publications 143 pp. ISBN D 1994/3026/3. B-VI, gerardus mercator Rupelmundanus / onderleiding van Marcel Watelet ; met bijdragen van Józef Babicz et al.. http://cartography.geog.uu.nl/vanderkrogt/mercator.html

Mercator Publications Peter van der Krogt The Mercator Years 1994 and 1995: a review In 1994 it was 400th anniversary of Gerard Mercator's death, in 1995 it was the 400th anniversary of the publication of Mercator's Atlas. Exhibitions with catalogues, books, symposiums and more frivolous activities: everything was done several times. The subject Mercator had already the largest number of titles in the 1993 Bibliography of the History of Cartography of the Netherlands; in 1994, 1995, and later dozens of more or less valuable titles are added. In the personal review (published in the above mentioned journals) some clarity is created in the chaos of publications. In the article reviews are presented of the exhibitions and publications. In the annex, which is given also here, first the separate publications are listed, secondly the individual contributions in those publications are presented in a systematic way: A. General contributions A1 biographical A2 philosophical and cosmological A3 theological ... D: Varia Separate publications Belgium B-I Mercator van Rupelmonde B-II B-III Sterren in beelden: astrologie in de eeuw van Mercator.

51. Walking Tree Press Currently on public display at the British Library, the atlas is now available toscholars and the public for the first time since gerardus mercator handed it http://www.walkingtree.com/provenance.html

PROVENANCE The Story of Mercator's Atlas of Europe In 1996 it was again put up for auction but was withdrawn after reaching a bid of approximately $1,243,000. In May of 1997, the British Library announced that with the aid of a generous grant from the Heritage Lottery Fund, the Library had acquired the unique atlas at a reputed price of approximately $1,145,000. Currently on public display at the British Library, the atlas is now available to scholars and the public for the first time since Gerardus Mercator handed it over to his patron, who was making a grand tour of Europe with the son of William V, the Duke of Cleves, circa 1570. Most of the history of the atlas prior to its rediscovery in 1967 is lost in time. The only facts known for certain are provided on its first page. In 1771 it belonged to the Cistercian monastery of Mariawald in the duchy of Julich - some fifty miles from Mercator's home in Duisburg. In that year it was repaired, rebound, and annotated by Alan Ortmans, a monk who had taken his vows at the neighboring monastery of Grevenbroich. The library of Mariawald was dispersed in 1797-98 when the area was under French rule, and the atlas was lost at that time. There is indication that it remained in the family of Mercator's patron, Werner von Gymnich, for many years. As for the rest, it is shrouded in mystery, but modern scholars have pieced together clues and information that help in telling its intriguing story.

52. Der Humanist Gerardus Mercatorr Translate this page DER HUMANIST gerardus mercator von Rolf Kirmse Im Einladungsschreiben zu dieser Feierstundelesen Sie als Thema meiner Ansprache Der Humanist gerardus mercator. http://www.du.nw.schule.de/merc-gym/humanist.html

DER HUMANIST GERARDUS MERCATOR von Rolf Kirmse Hohe Festversammlung! Im Einladungsschreiben zu dieser Feierstunde lesen Sie als Thema meiner Ansprache Der Humanist Gerardus Mercator in zu vielen Facetten schillernd. humanitas nahm das Suchen nach umfassenderer und genauerer Kenntnis der Erde und des Kosmos die zentrale Gerardus Mercator - wie er nach Humanistenbrauch seinen Namen Gerhard Kremer(s) Anm.1 Anm.2 Anm.3 Anm.4 seines langen Lebens als zu Papier brachte. Als Knabe besuchte Mercator mehrere Jahre hindurch in Hertogenbosch in Nordbrabant a Kempis, Nikolaus von Kues und Erasmus im Geiste ihrer Devotio moderna herangebildet hatte. Zeit seines Lebens sollte er jener mystischen Anm.5 Anm.6 Anm.7 Beim Vertiefen in das Studium der Philosophie, das Mercator privatim weiter betrieb Anm.8 Anm.9 animi heroici Europae descriptio Geographia mappa universalis, mappa und die tabulae erkannt worden. Anm.10 doctum, zum Gelehrten Duisburg. Novum linguarum et philosophiae Gymnasium pax ac tranquillitas zu finden, die sein Vorbild, Erasmus, als die Grundlagen der Bildung und eines christlichen Lebens bezeichnet hatte. ad usum navigantium Anm.11

53. The Mercator Projection gerardus mercator An article by Fred Roeder in the Professional Surveyor describeswhy and how gerardus mercator developed The mercator Chart. http://www.indstate.edu/gga/gga_cart/gecart86.htm

THE MERCATOR CHART Gerardus Mercator Developed for navigation, the strength of the Mercator Chart is its conformality. That is, at any intersection of longitude and latitude, it maintains all angular relationships thus correct azimuths. For a navigator, then, a straight line plotted from point A to point B on the chart would represent a rhumb line. A rhumb crosses all meridians at a constant azimuth allowing the navigator to set a compass orientation and proceed forthright. On The Mercator Chart a rhumb is always a straight line, whereas the corresponding great circle is a curved line (unlike the Gnomonic where the converse is true). Tissot's Indicatrix indicates numerically the property of conformality. Thus it is that The Mercator Chart is not a good map for global viewing (a better one for viewing might be Gall's ) but excellent for navigation. An article by Fred Roeder in the Professional Surveyor describes why and how Gerardus Mercator developed The Mercator Chart. The pages of this site are always being tweaked

54. ::... C A R T O G R A M A ...:: gerardus mercator Está considerado como padre dela cartografía moderna. Fue un hombre hábil para la construcción http://www.cartograma.com/nimercsp.html

Gerardus Mercator Está considerado como padre de la cartografía moderna. Fue un hombre hábil para la construcción de diversos instrumento así como un notable cartógrafo. Mercator nació en Amberes en 1512. Curso estudios en la Universidad de Lovaina y se graduó en geografía, geometría y astronomía. Fundo su propio negocio y dirigió su actividad al grabado de mapas y cartas de navegar. En 1522 se trasladó a Duisburgo, y empezo a trabajar en su famoso mapamundi publicado en 1569, que reproducía las costas de América central y meridional, comprendía un trazado más exacto de Asia, incluyendo el sudeste de este continente. Aunque el mayor logro de este mapa fue la proyección cilíndrica,que lleva su nombre y de la que viene la proyección mas empleada hoy en día la UTM (Universal Transversa de Mercator). Mapamundi del Atlas Minor. Está dibujado según la proyección de Mercator, con lo cual se exageran las masas continentales desconocidas en las regiones polares. Aparece también un versículo del Salmo 24 que dice:"Del Señor es la Tierra y cuanto la llena, el orbe de la Tierra y cuanto la habita." Él pretendía construir un mapa en el que se trazara una línea recta que uniera dos puntos y esta cortara con el mismo ángulo a todos los meridianos (Loxodrómica). Los meridianos aparecen como líneas rectas, perpendiculares al Ecuador, mientras que los paralelos, asimismo rectos, guardan paralelismo con aquel.

55. Gerhard Kremer Translate this page Heute sind historische Landkarten von Gerhard Kremer, alias gerardus mercatorheiss begehrte Sammelobjeckte. Gerhard Kremer - alias gerardus mercator. http://www.artelino.de/articles/gerardus_mercator.asp

English artelino - Kunstauktionen und Galerie Anmelden Login HOME INFO ... Hilfe Yoshitoshi Spezialauktion eröffnet. artelino - Japanische Grafik Auktion beendet in 14 Stunden und 20 Minuten 36 Farbholzschnitte von Yoshitoshi Kategorie wählen Textverzeichnis Alle Kategorien Alte Meister Edo Zeitalter ... Zeitgenössische Kunst Artikel wählen Abraham Ortelius Alte Landkarten I Civitates Orbis Terrarum Gerardus Mercator ... Artikel suchen Gerhard Kremer 1512-1594 Gerhard Kremer, geboren in Flandern, war Geograph, Kartograph und Mathematiker. Eine neue Technik zur Wiedergabe von Landkarten ist nach ihm benannt - die sogenannte Mercator Projektion. Die Qualität seiner Landkarten war so hoch, dass noch Generationen nach ihm kopierten. Heute sind historische Landkarten von Gerhard Kremer, alias Gerardus Mercator heiss begehrte Sammelobjeckte. Gerhard Kremer - alias Gerardus Mercator Gerhard Kremer ist sowas wie der Grossvater der modernen Landkartenkunde. Dem Zeitgeist entsprechend adaptierte er seinen Namen ins Lateinische - Gerardus Mercator. In seiner Bedeutung für die Entwicklung der Kartographie wird er mit Ptolomäus verglichen, einem Gelehrten aus Alexandrien, der von 100 bis 178 lebte und eine erstaunlich genaue Karte der damals bekannten Welt schuf. Mercator, alias Gerhard Kremer. wurde in Rupelmonde in Flandern geboren und hatte Geographie, Kartografie und Mathematik an der Universität von Leuven (Louvain) studiert. Im Jahr 1537 veröffentlichte er seine erste Landkarte - eine Karte von Palästina - als er gerade 25 Jahre alt war. Von 1537 bis 1540 vermass Mercator Flandern. Im Jahr 1538 schuf und veröffentlichte er seine erste Weltlandkarte. Sie basierte auf der Karte von Ptolomäus. Die Karten von Ptolomäus waren während des wissenschaftsfeindlichen Mittelalters verschollen. Die Erhaltung ist arabischen Gelehrten zu verdanken. Von dort kamen Kopien während der Renaissance Zeit nach Europa.

56. Historische Landkarten Niederlande Translate this page gerardus mercator 1512-1594. gerardus mercator ist sowas wie derVater der modernen Kartographie und Landkartenherstellung. Sein http://www.artelino.de/articles/historical_maps_netherlands.asp

English artelino - Kunstauktionen und Galerie Anmelden Login HOME INFO ... Hilfe Yoshitoshi Spezialauktion eröffnet. artelino - Japanische Grafik Auktion beendet in 14 Stunden und 20 Minuten 36 Farbholzschnitte von Yoshitoshi Kategorie wählen Textverzeichnis Alle Kategorien Alte Meister Edo Zeitalter ... Zeitgenössische Kunst Artikel wählen Abraham Ortelius Alte Landkarten I Civitates Orbis Terrarum Gerardus Mercator ... Artikel suchen Historische Landkarten Niederlande Südwest England von Mercator Im 16. und 17. Jahrhundert war Holland eine mächtige Nation im Überseehandel. Im Jahr 1581 wurden die Niederlande vom spanischen König unabhängig. In einer Atmosphäre ohne religiöse Unterdrückung entwickelten sich Antwerpen und Amsterdam zu Zentren der Künste und Wissenschaften. Und holländische Kartographen und Landkartenhersteller waren in Europa ebenso dominant wie die holländischen Schiffe auf den sieben Weltmeeren. Gerardus Mercator 1512-1594 Gerardus Mercator ist sowas wie der Vater der modernen Kartographie und Landkartenherstellung. Sein ursprünglicher Name war Gerhard Kremer. Zu jener Zeit war Latein die lingua franca der Gelehrten und viele nahmen einen lateinischen Namen an - so wie es heute chic ist englisch als internationale Sprache zu benutzen.

57. About Octavo Editions: Gerardus Mercator. Atlas. gerardus mercator Atlas. previous. The Atlas At the same time asthe production of the Ptolemy, work was going ahead on modern maps http://www.octavo.com/collections/projects/mcrats/about/index2.html

return to project page commentary binding ... provenance Gerardus Mercator Atlas < previous The Atlas At the same time as the production of the Ptolemy, work was going ahead on modern maps for what would become the Atlas Theatrum appeared in 1570, Mercator had been publishing maps of his own making for over thirty years. According to Walter Ghim, Theatrum, in a very large quantity, to his great gain in riches and fortunes, before Mercator would publish his aforesaid smaller maps. Whether out of deference to his friend Ortelius or out of a scrupulous desire to create the best product possible, it was another fifteen years before the first part of his collection of modern maps appeared. Atlas Theatrum and its importance for the history of the genre. Ortelius was first and foremost a map dealer and publisher. His technique of atlas construction was to take the best existing maps from his large stock, have them reengraved to a uniform page size, and publish them in book form. This policy made for a rapid assembly of maps but resulted in great variation in the quality, reliability, contents, and appearance of the maps chosen. Indeed, Ortelius was known to include two quite different depictions of a region in the same atlas, on the theory that the map reader might be well served by having a variety of options. Mercator, on the other hand, was the sole author of his maps. He gathered his information from a variety of sources, including other maps, the accounts of geographers and travelers, and first-hand observations, but he alone made the ultimate decisions about what to include on the maps, where to place it, and how to relate the maps to other maps in the collection. A number of the

58. Octavo: Mercator: Atlas Digital facsimile of book by gerardus mercator containinghandcolored maps of the world. Duisburg, 1595. http://www.octavo.com/collections/projects/mcrats/

Click on the image or the controls in the lower right to magnify and move around. 1: binding Atlas is the greatest work of a man who revolutionized cartography. Atlas CD-ROM Digital Edition ISBN 1-891788-26-4 US$65.00 Octavo Research Edition ISBN 1-59110-036-4 US$850.00, 9 CDs Features of Edition: Commentary by Robert W. Karrow, Jr., Curator of Special Collections and Curator of Maps, Newberry Library Binding description, collation, and provenance Supplementary essay on color in cartography Searchable, cross-linked, original English translation of the Latin text Digital images of every page of this rare book, cover to cover, in full color, presented as uncropped spreads Auto-start PDF file for quick access Ability to magnify and examine fine details Files for printing in black-and-white and color Adobe Acrobat Reader 4.0 with Search software Features of Research Edition: Digital images of every page, cover to cover, in full color, presented as uncropped spreads 284 image files in high-quality JPEG format on 9 CD-ROMs (ISO/HFS for Windows, Mac, UNIX) 24-bit (millions) color with embedded ICC profile Free copy of the standard Edition CD-ROM Help Files: Start Here Adobe Acrobat About Octavo Editions Features of Editions ... Visual Guide System Requirements: Windows Macintosh UNIX OS/2 Find a Book by Subject Amico/Trattato de Sacri Edifizi Fontana/Obelisk Palladio/I Quattro Libri Art: Braccelli/Bizzarie Holbein/Icones Midolle/Album Astronomy: Cellarius/Macrocosmica

59. Gerardus Mercator Enter the year gerardus mercator 1512–1594, Flemish Cartographer.gerardus mercator Latin form of his real name, Gerhard Kremer. http://www.informationplease.com/bio/3-5gmercator.html

Watch your office LIVE!...24-7 Terrific savings on Toys, Cameras , Videos and much more.. From Amateur Photography to In Depth News..mags from around the world! All Infoplease All Almanacs General Entertainment Sports Biographies Dictionary Encyclopedia Infoplease Home Almanacs Atlas Dictionary ... Fact Monster Kids' reference Info:Daily Fun facts Homework Center Newsletter You've got info! Help Site Map Visit related sites from: Family Education Network March 5 Other Birthdays Antoine Cadillac French Founder of Detroit (1658) Rex Harrison English Actor (1908) Pier Pasolini Italian Filmmaker (1922) Who shares your birthday? Select month and date: Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec The Day You Were Born What happened the day you were born? Select month and date: Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec The Year You Were Born What happened the year you were born? Enter the year: Gerardus Mercator Gerardus Mercator: Latin form of his real name, Gerhard Kremer. Flemish geographer, mathematician, and cartographer. He studied in Louvain , where he had a geographical establishment (1534). From 1537 to 1540 he surveyed and mapped Flanders Yesterday's Birthdays Tomorrow's Birthdays Infoplease Daily Almanac Search Infoplease Info search tips Search Biographies Bio search tips About Us Contact Us Link to Infoplease ... Privacy

60. HTML\Wetenschap\990525weet04 gerardus mercator. Het zou niet mogen bestaan dat iemand met goed gevolgde zeevaartschool doorloopt en dan ene gerardus mercator niet kent. http://oud.refdag.nl/series/uitvindingen/990525weet04.html

Wetenschap 25 mei 1999 Gerardus Mercator Door J. Reijnoudt Er bestaat geen landkaart zonder meer of minder sterke vertekening van de werkelijkheid. Het hoort nu eenmaal tot de onmogelijkheden om de bolle wereld netjes op een plat vlak over te brengen. Pers een sinaasappel uit en druk zo'n leeg halfrond op een plat bordje. De scheuren die dan ontstaan zijn op een landkaart nooit zichtbaar, dus elke kaart bedriegt wel een beetje. Sommige kaartenmakers gingen daarin heel ver en slaagden er tegelijkertijd in beroemd te worden, nota bene door de kwaliteit van hun sterk vertekenend product. Het zou niet mogen bestaan dat iemand met goed gevolg de zeevaartschool doorloopt en dan ene Gerardus Mercator niet kent. De man leeft van 1512 tot 1594 en zet de wereld op een merkwaardige manier op de kaart, maar wel zo dat zeevarenden, zeker in die tijd, zich nauwelijks een makkelijker hulpmiddel kunnen voorstellen dan een Mercatorkaart. Zeker zo bont maakt Mercator het met de meridianen of lengtecirkels: de denkbeeldige halve cirkels tussen de noord- en de zuidpool. Die tekent hij als rechte lijnen, haaks op de breedtecirkels. Bij de evenaar komt dat exact overeen met de werkelijkheid, maar bij de polen deugt er natuurlijk niets van. Op een globe komen alle meridianen daar samen en die van Mercator liggen onder- en bovenaan zijn vel papier even ver uit elkaar als bij de evenaar. Hij heeft dus op zijn kaart een noord- en een zuidpool van 40.000 kilometer 'breed'. Zover laat hij het echter niet komen. De remedie is simpel: zet nooit de noord- of zuidpool op de kaart.

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