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How do shadows change?

ViSH

Type	Excursion (Interactive Presentation)
{:title=>"Beschreibung"}	A Greek mathematician, Eratosthenes (276 BC-194 BC) used an experiment to enable him to prove the sphericity of the Earth and to measure its circumference. He used sun and shadows for his calculations! Let's watch what has he done.
Tags	sun shadow ratio length eratosthenes
Author	Julieta Jimenez de Llano Garcia
Uploaded by	ViSH
License	Creative Commons Attribution
Attribute to	Julieta Jimenez de Llano Garcia (http://graasp.eu/ils/55a3b09fb5a072ca55673725?lang=en)

Sprache	English
Erstellt am	Mittwoch, 05. August 2015, 12:57 Uhr
Aktualisiert am	Donnerstag, 06. August 2015, 11:41 Uhr

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• Type: Excursion (Interactive Presentation)
• Title: How do shadows change?
• Description: A Greek mathematician, Eratosthenes (276 BC-194 BC) used an experiment to enable him to prove the sphericity of the Earth and to measure its circumference. He used sun and shadows for his calculations! Let's watch what has he done.
• Keywords: sun, shadow, ratio, length, eratosthenes
• Language: English
• Age Range: 10 - 16
• Author: Julieta Jimenez de Llano Garcia
• Uploaded by: ViSH
• License: Creative Commons Attribution
• Difficulty: Easy
• LOM Metadata: http://vishub.org/excursions/1829/metadata.xml

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