camera iphone 8 plus apk Sand drop tower

amàco, CRAterre-ENSAG, les films du lierre, Laetitia Fontaine,
amàco

Drops of sand filled with water fall on a bed of dry sand. On contact with the dry sand, the water contained in the drops of wet sand is instantly aspirated by capillary action in the dry sand. The drops of sand solidify and form small balls : the majority of the water has been absorbed, the remaining little water is trapped between the grains and forms capillary bridges that ensure the cohesion of the sand balls. On the waterproof support, the water is not absorbed by capillarity. It is therefore impossible to make the tower of sand drops. If a drop does not fall perfectly in the axis of the tower, an alternation of the orientation of the balls occurs and the tower adopts a zig-zag structure.

This film is inspired by research carried out by Julien Chopin and Arshad Kudrolli.
Co-production : amàco, Universcience, les films du lierre
Licence Creative Commons : BY + NC + ND
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camera iphone 8 plus apk Sand drop tower
15 Likes	15 Dislikes
1,138 views views	144 followers
Science & Technology	Upload TimePublished on 7 Jun 2017

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