Magdeburg, Sehenswürdigkeiten der Ottostadt
Bei unserem Rundgang durch Magdeburg, der Hauptstadt Sachsen-Anhalts, besichtigen wir u.a. den Dom, einige weitere Kirchen, die Grüne Zitadelle und verschiedene Gebäude der Otto-von-Guericke-Universität. Die bereits im Jahr 805 gegründete Stadt an der Elbe hat neben vielen historischen Gebäuden auch eine grosse Anzahl von Kunstwerken zu bieten.
Einzelheiten: siehe Untertitel
Magdeburg - Altstadt, Elbe und Denkmäler I 3 Minuten
Im Format 3 Minuten wird ein Überblick über verschiedene Orte innerhalb Deutschlands verschafft.
verwendete Musik:
von Scott Buckley
scottbuckley.com.au
Firefly
Forever Sky
Magdeburger Reiter
Name: Magdeburger Reiter
Jahr: Mitte des 13.Jahrhunderts
Sonstiges: Der Magdeburger Reiter ist das erste freistehende Reiterstandbild nördlich der Alpen, und stellt vermutlich Kaiser Otto den Großen dar.
Meilensteine der Stadtgeschichte - Altes Rathaus von Magdeburg
Erleben Sie Magdeburgs Stadtgeschichte anhand einer Reihe von sehenswerten Stationen mithilfe Ihres Smartphones oder Tablets. An einigen der orangenen Informationstafeln finden Sie einen QR-Code zum einscannen. Folgen Sie dem Link und erfahren Sie in aller Kürze die Geschichte des Ortes an dem Sie sich befinden. Besonders Entdeckungslustigen empfehlen wir die dazugehörige Rätseltour, erhältlich in der Touristinformation: Ernst-Reuter Allee 12, 39104 Magdeburg.
magdeburg-tourist.de
Google Doodle: 410th Birthday of Otto von Guericke
Google Doodle celebrates the 410th Birthday of Otto von Guericke on 20th November 2012
Otto von Guericke (originally spelled Gericke, German pronunciation: [ˈɡeːʁɪkə]) (November 20, 1602 -- May 11, 1686 (Julian calendar); November 30, 1602 -- May 21, 1686 (Gregorian calendar)) was a German scientist, inventor, and politician. His major scientific achievements were the establishment of the physics of vacuums, the discovery of an experimental method for clearly demonstrating electrostatic repulsion, and his advocacy of the reality of action at a distance and of absolute space.
Probably around 1650 von Guericke invented a vacuum pump consisting of a piston and an air gun cylinder with two-way flaps designed to pull air out of whatever vessel it was connected to, and used it to investigate the properties of the vacuum in many experiments. This pump is described in Chapters II and III of Book III of the Experimenta Nova and in the Mechanica Hydraulico-pneumatica (p. 445-6). Guericke demonstrated the force of air pressure with dramatic experiments.
With his experiments Guericke disproved the hypothesis of horror vacui, that nature abhors a vacuum. Aristotle in e.g. Physics IV 6-9 had argued against the existence of the void and his views commanded near universal endorsement by philosophers and scientists up to the 17th century. Guericke showed that substances were not pulled by a vacuum, but were pushed by the pressure of the surrounding fluids.
The second was an experiment in which a number of men proved able to pull an airtight piston only about half way up a cylindrical copper vessel. Von Guericke then attached his evacuated Receiver to the space below the piston and succeeded in drawing the piston back down again against the force of the men pulling it up. In a letter to Fr. Schott of June 1656, reproduced in Mechanica Hydraulico-pneumatica, von Guericke gives a short account of his experiences at Regensburg. Based on this, Schimank [1936] gives a list of ten experiments which he considers likely to have been carried out at Regensburg. In addition to the above two, these included the extraction of air using a vacuum pump, the extinction of a flame in a sealed vessel, the raising of water by suction, a demonstration that air has weight, and a demonstration of how fog and mist can be produced in a sealed vessel. The Mechanica Hydraulico-pneumatica also provides the earliest drawing of von Guericke's vacuum pump. This corresponds to the description in the opening chapters of Book III of the Experimenta Nova of the first version of his pump.
In the Experimenta Nova Book III Chapter 20 von Guericke reports on a barometer he had constructed and its application to weather forecasting. The earliest reference to his barometer is in a letter to Fr. Schott of November 1661 (Technica Curiosa p. 37) where he writes: I have observed the variation in the weight of the air by using a little man (.e. a statue in the form of one) who hangs from a wall in my hypocaust where it floats on air in a glass tube and uses a finger to show the weight or lightness of the air. At the same time it indicates whether or not it is raining in nearby localities or whether there is unusually stormy weather at sea. In a subsequent letter of December 30, 1661 (Technica Curiosa p. 52) he gives a somewhat amplified account. His barometer thus prepared the way for meteorology. His later works focused on electricity. He invented the first electrostatic generator, the Elektrisiermaschine, of which a version is illustrated in the engraving by Hubert-François Gravelot, c. 1750.
More information on
Music:
Egmont Overture - Kevin MacLeod (incompetech.com)
Licensed under Creative Commons: By Attribution 3.0