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Durchlässig oder undurchlässig?

Submitted by Michel Darche on

Die Diffusion von Flüssigkeiten im Erdboden nennt man auch Perkulation (Versickerung). Mit Hilfe wissenschaftlicher Methoden kann man bestimmen, auf welche Weise Wasser im Erdboden versickert und wie schnell Grundwasserschichten wieder aufgefüllt werden. Das hilft dabei zu verstehen, wie sich beispielsweise Benzin und weitere Schadstoffe im Erdboden ausbreiten.
J. M. Hammersley, ein englischer Mathematiker, fand 1965 heraus, dass die Gesetzmäßigkeiten der Perkulation auch in anderen Bereichen gelten. So können dieselben Regeln angewendet werden, um beispielsweise den Informationsfluss innerhalb von Telekommunikationsnetzwerken zu beschreiben, das Ausbreiten von Epidemien oder Bränden vorherzusagen, oder auch um den Phasenübergang beim Gefrieren von Wasser zu modellieren.

Suzhi Kolangal/South Indian Traditional Art

In Tamilnadu, one would find a finest drawn and artistic drawing decorating every house at the front entrance.

These drawings are not just merely a decoration, but it has lot more significance to this practice.

During festival seasons and on any auspicious functions, the drawing is drawn still larger even extending up to the street! A classic example can be noted from these, a woman’s creative at its best, talent to make it an even more attractive.

A kolam is a geometrical drawing composed of curved loops drawn around a grid pattern of dots. It is sometimes called Rangoli and can be very elaborate and colorful.

Kolams originated about 2500 BC in the Indus Valley Civilization and are believed to help bring wealth and prosperity to the home or business.

Kolams are thought to bestow prosperity to homes.

Every morning in Tamil Nadu, millions of women draw kolams on the ground with white rice powder
(Reference Wikipedia)

IMAGINARY Worksheets for Schools

Submitted by IMAGINARY on

A collection of IMAGINARY worksheets for school children. The worksheets are of different levels of difficulty, aimed at children and teenagers aged between 5 and 17 years. The material has been developed for the IMAGINARY exhibitions in Spain and was awarded with a prize of the Initiative “Ciencia en Acción” 2012. 

School Taskbook: From 5 to 15

Submitted by IMAGINARY on

The taskbook for school students by renowned Russian mathematician Prof. Vladimir Igorevich Arnold. You can find the original Russian version as well as an English, German, Spanish, Italian, Vietnamese and Turkish translation.

If you are interested to add a new translation, please see the github repository of the booklet for all sources and details.

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