Math Is Fun Forum

JaneFairfax

Member

Registered: 2007-02-23

Posts: 6,868

Walking on custard

Remember I mentioned one episode of “QI” in which it was pointed out that custard is a non-Newtonian dilatant fluid? That means that if you apply a large amount of pressure on it, it resists, but if you only apply a tiny amount pressure to it, it gives way.

And this implies that you can walk on custard without sinking into it! As this video shows:

[align=center]http://www.youtube.com/watch?v=BN2D5y-AxIY[/align]

It also shows that you can’t stand on custard, only walk on it.

bobbym

bumpkin

From: Bumpkinland

Registered: 2009-04-12

Posts: 109,606

Re: Walking on custard

Hi Jane;

Thanks for the vid.

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In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.

quittyqat

Member

Registered: 2009-04-08

Posts: 1,215

Re: Walking on custard

Amazing!

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I'll be here at least once every decade.

jU

Real Member

Registered: 2005-08-17

Posts: 1,923

Re: Walking on custard

ha ha that was fantastic!!
wish I could fill my pool with custard!
xx
Jee

quittyqat

Member

Registered: 2009-04-08

Posts: 1,215

Re: Walking on custard

jU, isn't your name Jen,not Jee?

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I'll be here at least once every decade.

jU

Real Member

Registered: 2005-08-17

Posts: 1,923

Re: Walking on custard

Well my name is Jenee so people call me all different things. I get called Jee, Jen, Jenny, Jee-Jee or just Jenee. But I am also known as mummy to my two twins.
xx
Jen

jU

Real Member

Registered: 2005-08-17

Posts: 1,923

Re: Walking on custard

BTW My twins, Matthew and Emma, turn 6 in October they are sweeties....

Tigeree

Member

Registered: 2005-11-19

Posts: 13,883

Re: Walking on custard

Oh those twins! I almost forgot! So they started school then? 

Mmmm.... custard...

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People don't notice whether it's winter or summer when they're happy.
~ Anton Chekhov
Cheer up, emo kid.

jU

Real Member

Registered: 2005-08-17

Posts: 1,923

Re: Walking on custard

yes they have started school and guess what i'm expecting! due in august!!

integer

Member

Registered: 2008-02-21

Posts: 79

Re: Walking on custard

[snip]

non-Newtonian dilatant fluid

That means that if you apply a large amount of pressure on it, it resists, but if you only apply a tiny amount pressure to it, it gives way.

Thanks Jane.