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Tension superficielle

Tension superficielle | Physics | Scoop.it
Un fil de coton se tend lorsqu’il est soumis à l’action d’un film de savon… un barreau semble rouler tout seul sur un cadre trempé dans l’eau savonneuse… sur une structure en fil de fer, les films de savon dessinent d’étranges figures… à toutes ce...
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Very nice movie presenting different experiments on surface tension (in french).

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Is This What Quantum Mechanics Looks Like?

Silicone oil droplets provide a physical realization of pilot wave theories. Check out Smarter Every Day: http://bit.ly/VeSmarter Support Veritasium o
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La physique au royaume végétal - Printemps des Sciences - Région Liégeoise et Bruxelloise

La physique au royaume végétal - Printemps des Sciences - Région Liégeoise et Bruxelloise | Physics | Scoop.it
Quand?
Mardi 15 mars de 9h à 12h (à l'ULg)
Jeudi 17 mars de 11h à 12h (à l'ULB)

Où?
ULg - Institut de Zoologie, quai Édouard van Beneden, 22, 4020 Liège
ULB - Campus du Solbosch - Bâtiment S – Salle Dupréel

Pour qui ?
Écoles secondaires (à partir de la 3e)
Grand-public
Étudiants

Liens web:

Résumé de la conférence:

Tout au long de leur évolution, les plantes ont mis au point des mécanismes physiques astucieux qui leur permettent de se nourrir, de se défendre et de se reproduire. Pour assurer leur survie et leur alimentation, ces artistes de la nature s’adaptent en utilisant les ressources de leur milieu naturel.

Dans cette conférence, nous explorerons ce monde des plantes avec nos yeux de physiciens. Nous commencerons par mettre au point une « boîte à outils du physicien » en récapitulant et illustrant les différents états de la matière (solide, gaz, liquide, granulaire) et leurs propriétés physiques (la tension de surface, la viscosité, la pression, l’élasticité, la géométrie, …). Nous plongerons ensuite dans le « royaume végétal » et tenterons de déceler les mécanismes ingénieux que les plantes mettent au point pour se nourrir. Nous aborderons de nombreux exemples fascinants. En chemin, nous éluciderons aussi quelques-unes de leurs stratégies de défense et de reproduction.
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Tension superficielle

Tension superficielle | Physics | Scoop.it
Un fil de coton se tend lorsqu’il est soumis à l’action d’un film de savon… un barreau semble rouler tout seul sur un cadre trempé dans l’eau savonneuse… sur une structure en fil de fer, les films de savon dessinent d’étranges figures… à toutes ce...
Denis Terwagne's insight:

Very nice movie presenting different experiments on surface tension (in french).

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LEGO® AFM

LEGO® AFM | Physics | Scoop.it

Nanotechnology, despite being at the forefront of modern science and engineering, is rarely taught in detail at the middle and high school levels. There are few teaching materials that focus on nanotechnology and are age appropriate. This project aims to address this issue by developing and distributing kits for fully automated, large-scale atomic force microscopy (AFM) models.

Denis Terwagne's insight:

Create a large-scale atomic force microscopy (AFM) and learn how it works. So cool !

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Morphable surfaces could cut air resistance

Morphable surfaces could cut air resistance | Physics | Scoop.it
Adding golf ball-like dimples to surfaces could reduce drag and improve efficiency of vehicles.
Denis Terwagne's insight:

Our research work on Smart Morphable Surfaces (with P.M. Reis and M. Brojan) has been published yesterday in Advanced Materials and is today at the forefront of MIT's homepage !

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RI Channel: Celebrating Crystallography

RI Channel: Celebrating Crystallography | Physics | Scoop.it
An animated celebration
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Here is an amazing collection of videos from the Royal Institution (UK) on the birth of crystallography towards nowadays challenges.

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Rescooped by Denis Terwagne from Daily Magazine
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Lab 6A: PDMS Microfluidics: O2 Plasma Treatment

“ MIT 6.S079 Nanomaker, Spring 2013 View the complete course: http://ocw.mit.edu/6-S079S13 Instructors: Dr. Katey Lo, Dr. Joseph Summers, Prof. Vladimir Bulovi...”
Via THE OFFICIAL ANDREASCY
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This Insect Has The Only Mechanical Gears Ever Found in Nature

This Insect Has The Only Mechanical Gears Ever Found in Nature | Physics | Scoop.it
The small hopping insect Issus coleoptratus uses toothed gears on its joints to precisely synchronize the kicks of its hind legs as it jumps forward (you are quite evolved, young grasshopper http://t.co/f1R0ku0pNx)...
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Rescooped by Denis Terwagne from Eating Culture & Cultures alimentaires
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Historical Context and Demos Illustrating the Relationship of Food and Science | Lecture 1 (2011)

Speakers: Dave Arnold (Food Arts magazine's Contributing Editor for Equipment & Food Science), Harold McGee (author of On Food and Cooking: The Science and L...

Via Sémio PUB
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How Do Death Valley’s “Sailing Stones” Move Themselves Across the Desert?

How Do Death Valley’s “Sailing Stones” Move Themselves Across the Desert? | Physics | Scoop.it
These mysterious rocks have puzzled scientists for decades—until one geologist found the answer on his kitchen table
Denis Terwagne's insight:

This was explained using a simple benchtop experiment !!

 

Here is the original paper:

http://ajp.aapt.org/resource/1/ajpias/v79/i1/p37_s1?isAuthorized=no

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Hydrofoils: Flying on Water

The AC72 is a speedster unlike any seen in previous America's Cups. Powered by a 130-foot tall wing sail and with the ability to hydrofoil. Foiling reduces d...

Via Nicolas Felix
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The Most Amazing Thing About Trees

Hope this was worth the wait! So many people helped with this video: Prof John Sperry, Hank Green, Henry Reich, CGP Grey, Prof Poliakoff, my mum filmed fo
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Physics in plants is just fascinating !! 
Here is a nice video on how a tree can pump water as high as a 100 meters... The physical processes are so ingenious that physicists and biologists still strive for understanding how plants manage to defy gravity. Enjoy.
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Through the Wormhole - Wave/Particle - Silicon Droplets - YouTube

Share your videos with friends, family, and the world
Denis Terwagne's insight:

This is the best model experiment I have ever seen (and have worked with) and all narrated by Morgan Freeman. Mimicking quantum mechanics, what a challenge !

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Wrinkle predictions

Wrinkle predictions | Physics | Scoop.it
New mathematical theory may explain patterns in fingerprints, raisins, and microlenses.
Denis Terwagne's insight:

Our paper on the “Curvature-induced symmetry breaking determines elastic surface patterns” has just been published online in Nature Materials !

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Rescooped by Denis Terwagne from Mes passions natures
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What Gives the Morpho Butterfly Its Magnificent Blue? - YouTube

“ What does it mean to be blue? The wings of a Morpho butterfly are some of the most brilliant structures in nature, and yet they contain no blue pigment -- th...”
Via Bourdoncle
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Physicists Say New World Cup Soccer Ball Design Has Big Impact

Physicists Say New World Cup Soccer Ball Design Has Big Impact | Physics | Scoop.it
With just six panels and a rough surface, the new Brazuca ball seems to move more predictably than previous World Cup balls.
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With Math as Inspiration, a New Form of Flyer

With Math as Inspiration, a New Form of Flyer | Physics | Scoop.it
Two scientists have developed a small, hovering, flapping-wing flying machine that looks for all the world like a flying jellyfish.
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Physics Buzz: Fluid Knots and Smoke Ring Physics

Physics Buzz: Fluid Knots and Smoke Ring Physics | Physics | Scoop.it
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Very clever !

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Leggy plant spores walk and jump

Leggy plant spores walk and jump | Physics | Scoop.it
Microscopic footage reveals how horsetail plant spores move around on moisture-sensitive legs by walking and jumping.
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HarvardX: SPU27x: Science & Cooking: From Haute Cuisine to Soft Matter Science | edX

HarvardX: SPU27x: Science & Cooking: From Haute Cuisine to Soft Matter Science | edX | Physics | Scoop.it
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Whisky in a jar: TEDGlobal 2013 with photographer Fabian Oefner | TED Blog

Whisky in a jar: TEDGlobal 2013 with photographer Fabian Oefner | TED Blog | Physics | Scoop.it
Photographer Fabian Oefner brings natural phenomena that are normally impossible for humans to see into sharp focus -- from bursting bubbles to the shape of sound waves.
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The World's Thinnest Wireless Keyboard

CSR (http://www.csr.com) has developed the world's thinnest wireless touch interface to demonstrate the revolutionary potential of Bluetooth® Smart for compu...

Via Tiaan Jonker
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Ouida Sparkman's curator insight, September 4, 2013 11:27 AM

Awesome!

David Smart's comment, September 4, 2013 5:50 PM
I wonder what will replace this ultra thin keyboard. The holographic keyboard perhaps.
Guilherme Pompeo's curator insight, September 9, 2013 10:05 PM

Contributing (significantly) to the new meaning of mobility.

Rescooped by Denis Terwagne from Natural Products Chemistry Breaking News
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Plants 'seen doing quantum physics'

Plants 'seen doing quantum physics' | Physics | Scoop.it
Researchers pin down the contentious notion that ideas from the strange world of quantum mechanics underpin plants' skill at harvesting sunlight.

Via NatProdChem
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NatProdChem's curator insight, August 14, 2013 3:49 AM

The original paper is here http://www.sciencemag.org/content/340/6139/1448.abstract

 

Science 21 June 2013:
Vol. 340 no. 6139 pp. 1448-1451
DOI: 10.1126/science.1235820

Ruth Obadia's curator insight, August 14, 2013 1:42 PM

The idea that plants make use of quantum physics to harvest light more efficiently has received a boost.

Plants gather packets of light called photons, shuttling them deep into their cells where their energy is converted with extraordinary efficiency.