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Serial Mappers’ Visual Mapping Blogroll
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Real-time Earthquake Map -
Scientific American Reference Book. A Manual for the Office, Household and Shop
Albert A. Hopkins, A. Russell BondThe Editor of the Scientific American receives during the year thousands of inquiries from readers and correspondents covering a wide range of topics. The information sought for, in many cases, can not readily be found in any available reference or text-book. It has been decided, therefore, to prepare a work which shall be comprehensive in character and which shall contain a mass of information not readily procured elsewhere. The very wide range of topics covered in the Scientific American Reference Book may be inferred by examining the index and table of contents. This work has been made as nontechnical as the subjects treated of will admit, and is intended as a ready reference book for the home and the office.
(source)
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24 April 1915 | Armenian Genocide
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Mexico City subway map
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The world turned upside down Dyer, Mick - Oxford Cartographers, 2005
Tile Hobo-Dyer Equal Area Projection
All printed world maps we see show a distortion of the true shape and size of the earth. This is not a deliberate plot on behalf of the map-makers, but stems from the impossibility of representing a spherical surface on a flat piece of paper. You need only peel an orange and try to flatten it to verify the principle - the peel will not lie flat without being broken into small pieces.
Cartographers have long sought solutions to this problem. The way that the globe is transferred to paper is called a projection. In the 16th century. the mapmaker Gerardus Mercator (1512-94) developed the Mercator Projection which sought to preserve fidelity of direction for navigators so that bearings taken from the map would be correct compass bearings on a journey. Unfortunately the result exaggerates scale so much that high latitudes become far too large. China. for example, appears much smaller than Greenland. whereas in reality it is 4½ times larger.
It soon becomes clear that whatever principle is used. the preservation of all the qualities on the globe - fidelity of area, distance, direction, and shape, cannot all be achieved on a world projection. Most projections are a compromise, where none of the qualities is totally preserved but a balance is struck.
The process of globalisation encourages us to focus on faraway parts of the world that were once considered unimportant. In order to gain a balanced appreciation of all regions, a new projection has been developed which preserves the property of equal area, that is, all countries are the correct size in relation to one another. This is the Hobo-Dyer Projection. It is still based on a cylinder, but in such a way that shapes are fairly correct up to about 45 degrees. At higher latitudes, the shapes are progressively flattened to compensate for the fact that the lines of longitude do not come to a point at the poles. Another equal area projection, called the Peters Projection, uses a similar principle but shape is less consistent in lower latitudes. Other commonly used projections, such as the Robinson Projection, usually fail to preserve equality of area, shape, angle or distance but offer a compromise between these properties.
The Hobo-Dyer Projection allows the display of geographic data, whether topographic or thematic. without scale bias in any region. The loss of true shape polewards of about 45 degrees is a small price to pay for the preservation of equal area.
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TeleGeography’s Submarine Cable Map has been updated for 2012. The latest edition depicts more than 150 cable systems that are currently active or that are due to enter service by 2014.
via: Telegeography
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History of the Atlantic Cable & Undersea Communications from the first submarine cable of 1850 to the worldwide fiber optic network
This morning I read an impressive article by Alfonso Desiderio about the 2012 Submarine Cable Map of the world. For Desiderio this is a good way to remind us that the internet seems ‘incorporeal’ but actually it is based on a very huge physical structure.
I’ve collected eight maps to show the development of the submarine cable network. I picked the first 4 images from the History of the Atlantic Cable & Undersea Communications’ site.
1 1855 Map; showing the telegraph lines in operation, under contract, and contemplated, to complete the circuit of the globe / entered according to Act of Congress in the year 1855 by J.H. Colton & Co. in the Clerks Office of the District Court for the Southern District of New York.
2 1903 Map: Telegraph Construction & Maintenance Co Ltd Showing submarine telegraph cables the cores of which were manufactured at The Gutta Percha Works, Wharf Road, City Road, London N.
3 1924: This chart represents the world’s international cable network in 1924. It was compiled from the official data of the International Telegraph Bureau, Berne, Switzerland.
4 1992 British Telecomm map of Communications - Around the World
And I found the second four maps on the TeleGeography’s web site.
TeleGeography offered also an interactive website called Submarine cable map. Data contained in this map is drawn from Global Bandwidth Research Service and is updated on a regular basis.
I begin to ask myself how many meters are needed to post this message…
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Kunyu Wanguo Quantu
Copy of the 1602 map Kunyu Wanguo Quantu, created by Matteo Ricci at the request of the Wanli Emperor.
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On October 28, 2002, the Moderate Resolution Imaging Spectroradiometer (MODIS) on NASA’s Aqua satellite captured this true-color image of the ongoing eruption of Europe’s largest and most active volcano, Mt. Etna, on the island of Sicily. The volcano’s thermal signature was detected by MODIS and is marked with a red overlay. On the northern slopes of the volcano, the thermal signature is possibly a second lava flow. A dense plume of what is likely ash and smoke is streaming southward from the volcano and out over the Mediterranean Sea.
via: Earth Observatory
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Johannis Hevelii (Johannes Hevelius) Selenographia sive lunae descriptio, 1647
Johannes Hevelius (also known as Johannes Hewel or Johann Hewelke, 1611-87), son of a wealthy Danzig patrician family, was one of the leading astronomers of his time. At first he studied jurisprudence in Leiden, before he took over his father’s brewery in Danzig, but soon spent all his time with astronomy.
In 1641 Johannes Hevelius set up an observatory in the roof of his Danzig home, which, at that time, was the largest observatory in Europe. He built high-quality astronomical instruments, which he used for topographic examinations of the sun and the planets, particularly the moon. With his main work “Selenographie” (1647), whose splendid illustrations he engraved himself in copperplate, he produced a first, long-standing topographic study of the moon, which does not only contain a detailed description of the moon’s surface, but also a description of the moon phases and the moon’s librations. The Latin term “mare” for moon spots can be traced back to his works.
Johannes Hevelius presented a depiction of the entire celestial sky in his “Prodromus astronomiae”, which was published posthumously in 1690. -
Pedestrian Flows, Place d’Aligre from On Street by Stanford Anderson, 1978
The idea of the labyrinth is predicated on the notion of finding oneself through the process of losing oneself. The medieval city embodies the labyrinth by virtue of its bottom up methodology. Its resulting urbanism exhibits a level of complexity that contrasts greatly to the strategies employed by the industrialised minds of the 19th and 20th centuries who sought to restore ‘order’ and ‘rationality’ to the urban landscape. The grid, the radial plan, and the top down urban systems forever altered how one operated and navigated the urban environment, significantly impacting the urban ecology and its culture. Today we are seeing a similar transformation albeit by much more subversive and intangible means: through a digital medium.
We are living in an age composed of two worlds: one physical and the other digital. While the physical world is bound by space and time, the digital world transcends them. We experience the physical world through our perceptions and our senses, but we also do so through a superimposed digital urban landscape. This has profoundly transformed the urban experience and society as a whole, accelerating globalization by collapsing distances and altering the way we operate within the urban environment. The digital network shares the bottom up methodology with the medieval city, allowing one to lose oneself in its labyrinth of information.
In Paris, the labyrinth of the medieval quarters have been torn through by and adapted to centuries of development. The city was noted rather sardonically by Walter Benjamin as ‘the capital of the 19th century’ the city of Modern thought and transformation.
via: Labyrinthine Cities by Patrick Bourgeois
