The Naked Scientists

The Naked Scientists Forum

Author Topic: Walking on non Newtonian liquids  (Read 5576 times)

Offline stragen

  • First timers
  • *
  • Posts: 7
    • View Profile
Walking on non Newtonian liquids
« on: 15/09/2005 19:08:57 »
I understand that it is possible to walk on a non newtonian liquid, such as custard, as when you impact the surface it forms a solid column underneath you.

How does this work? Why dont you just sink in like you would with thick mud, and if it forms a solid column, why doesnt this dissipate into the non solid liquid around it?



42....?


 

Offline daveshorts

  • Moderator
  • Neilep Level Member
  • *****
  • Posts: 2583
  • Physics, Experiments
    • View Profile
    • http://www.chaosscience.org.uk
Re: Walking on non Newtonian liquids
« Reply #1 on: 15/09/2005 21:29:52 »
It is because the particles of the cornflour lock together when you compress them fast but the water can work it's way between so they flow if you move more slowly. Have a look at:
http://www.chaosscience.org.uk/dem/public_html/article.php?story=20030925150035401&query=cornflour
Which I wrote a while ago.
 

Offline stragen

  • First timers
  • *
  • Posts: 7
    • View Profile
Re: Walking on non Newtonian liquids
« Reply #2 on: 15/09/2005 21:40:27 »
Nice....thanks :)

42....?
 

The Naked Scientists Forum

Re: Walking on non Newtonian liquids
« Reply #2 on: 15/09/2005 21:40:27 »

 

SMF 2.0.10 | SMF © 2015, Simple Machines
SMFAds for Free Forums