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The Fluid on Which You Can Walk (12 pics + 1 video)

Posted in Pictures   5 Mar 2010   / 18803 views

The most common of a non-Newtonian fluid is a suspension of starch (e.g. cornflour) in water. The sudden application of force — for example by stabbing the surface with a finger, or rapidly inverting the container holding it — leads to the fluid behaving like a solid rather than a liquid. This is the "shear thickening" property of this non-Newtonian fluid. More gentle treatment, such as slowly inserting a spoon, will leave it in its liquid state. Trying to jerk the spoon back out again, however, will trigger the return of the temporary solid state. A person moving quickly and applying sufficient force with their feet can literally walk across such a liquid. [Wikipedia]
That is what you will see in the video below. It really looks great, so don’t miss it!

Here is how to make it for yourself. Mix equal amounts of starch and water, perhaps a little less water, then stir.

Pour some the white liquid on your palm.
1 The Fluid on Which You Can Walk (12 pics + 1 video)


Roll the liquid into a little ball by quickly rubbing your hands together.
2 The Fluid on Which You Can Walk (12 pics + 1 video)


Slowly put your finger in a bowl of the liquid.
3 The Fluid on Which You Can Walk (12 pics + 1 video)


Sharply hit the liquid with another finger: The liquid will feel elastic, and your finger will stay clean.
4 The Fluid on Which You Can Walk (12 pics + 1 video)


Slowly place your thumb and index finger into the liquid.
5 The Fluid on Which You Can Walk (12 pics + 1 video)


Quickly squeeze your fingers and you will see a hard lump forming between them. It is not starch that causes it to harden; it is a non-Newtonian fluid that is showing its properties.
6 The Fluid on Which You Can Walk (12 pics + 1 video)


Try to dip all your fingers into the fluid and pull them out quickly.
7 The Fluid on Which You Can Walk (12 pics + 1 video)


Pour the starch from one bowl into the other. As you lift it higher you will see that the liquid flows from above, and becomes harder below.
8 The Fluid on Which You Can Walk (12 pics + 1 video)


In order to make the liquid remain hard you must continuously influence it by kneading.
9 The Fluid on Which You Can Walk (12 pics + 1 video)

10 The Fluid on Which You Can Walk (12 pics + 1 video)


Here is a marble made from the liquid.
11 The Fluid on Which You Can Walk (12 pics + 1 video)


However, as soon as you stop kneading it, the non-Newtonian marble once again becomes liquid and flows down through your fingers.

12 The Fluid on Which You Can Walk (12 pics + 1 video)







 

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Comments (11):

0
1.
madb 6 year s ago MARK AS SPAM
saw in the uk braniac show a person running on top of custard, custard must be non-newtonian as well
       
diegopol                    show commment
0
3.
mominco 6 year s ago MARK AS SPAM
looks like fun to play with
       
0
4.
Tarzan 6 year s ago MARK AS SPAM
35 35 35 35
Men have two emotions: Hungry and Horny.
If you see him without an erection, make him a sandwich :)
       
0
5.
HollyxHero 6 year s ago MARK AS SPAM
We made this stuff in 5th grade for Doctor Seuss Day... lol
I got my stitches stitched, I got my fixes fixed,
In my aching head, I got my kisses slit.
Our gossip lips stuttered every word I said, I said,
I got your love letters, corrected the grammar and sent them back.
It's true romance is dead, I shot it in the chest then in the head.
       
0
6.
koreanwutard 6 year s ago MARK AS SPAM
idiots of course you can run across it..
       
squerell02                    show commment
0
8.
forex robot 6 year s ago MARK AS SPAM
nice post. thanks.
       
0
9.
five finger vibram 5 year s ago MARK AS SPAM
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0
10.
five finger 5 year s ago MARK AS SPAM
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0
11.
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