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Erdkunde – Archive for Scientific Geography is a quarterly peer-reviewed academic journal of geography published at the University of Bonn (Germany). Articles have been published in English since 2008. Since September 2016, the journal is available online and open access. All articles are available for free immediately and publication fees ...
The Gesellschaft für Erdkunde zu Berlin (Berlin Geographical Society) was founded in 1828 and is the second oldest geographical society. It was founded by some of the foremost geographers of its time. The founder Carl Ritter and the founding member Alexander von Humboldt can also be considered the founders of modern scientific geography.
A dry atmosphere is composed of 78.084% nitrogen, 20.946% oxygen, 0.934% argon, and trace amounts of carbon dioxide and other gaseous molecules. [212] Water vapor content varies between 0.01% and 4% [212] but averages about 1%. [3] Clouds cover around two-thirds of Earth's surface, more so over oceans than land. [213]
Renckhoff, W, ed. (1962), Gerhard Mercator, 1512–1594 :Festschrift zum 450. Geburtstag (Duisburger Forschungen) , Duisburg-Ruhrort :Verlag fur Wirtschaft und Kultur Snyder, John P. (1993), Flattening the Earth: Two Thousand Years of Map Projections. , University of Chicago Press, ISBN 978-0-226-76747-5 This book is an expanded version of the ...
PDF 2.0 defines 256-bit AES encryption as the standard for PDF 2.0 files. The PDF Reference also defines ways that third parties can define their own encryption systems for PDF. PDF files may be digitally signed, to provide secure authentication; complete details on implementing digital signatures in PDF are provided in ISO 32000-2.
Carl Ritter was born in Quedlinburg, one of the six children of a doctor, F. W. Ritter.. Ritter's father died when he was two. At the age of five, he was enrolled in the Schnepfenthal Salzmann School, a school focused on the study of nature (apparently influenced by Jean-Jacques Rousseau's writings on children's education).
Pangaea or Pangea (/ p æ n ˈ dʒ iː ə / pan-JEE-ə) [1] was a supercontinent that existed during the late Paleozoic and early Mesozoic eras. [2] It assembled from the earlier continental units of Gondwana , Euramerica and Siberia during the Carboniferous approximately 335 million years ago, and began to break apart about 200 million years ...