|
|
Question
#44303. TheAlphaWolf
asks:
Corn starch and water make this kind of liquid. Under pressure it acts like a solid but in normal pressure it acts like a liquid. What is it called?
|
sequoianoir
|
It is a Non-Newtonian Fluid.
[Feb 13 04 8:00 PM] sequoianoir writes:
Remember SILLY PUTTY? That gloopy sticky stuff that could remove newsprint but would BOUNCE when thrown at the floor.
That is also a non-Newtonian Fluid but I do not believe that it is a colloidal suspension !
[Feb 13 04 8:06 PM] sequoianoir writes:
A non-Newtonian fluid is a fluid in which shear stress is not simply proportional solely to the velocity gradient, perpendicular to the plane of shear. Non-Newtonian fluids may not have a well-defined viscosity.
Principle types of non-Newtonian fluid include:
plastic, pseudo-plastic, perfectly plastic, Bingham plastic, dilatent, rheopectic, thixotropic & visoelastic.
Feb 13 04, 7:41 PM
|
potterguy
|
Really interesting stuff to read about:
 http://en.wikipedia.org/wiki/Non-Newtonian_fluid
non-Newtonian fluid is a fluid in which shear stress is not simply proportional solely to the velocity gradient, perpendicular to the plane of shear. Non-Newtonian fluids may not have a well-defined viscosity.
Principle types of non-Newtonian fluid include:
plastic
pseudo-plastic (apparent viscosity reducing with rate of shear. E.g. gelatine, blood and liquid cement)
perfectly plastic (strain does not result in opposing stress)
Bingham plastic
dilatent (apparent viscosity increasing with rate of shear. E.g. concentrated solution of sugar in water)
rheopectic (apparent viscosity increases with duration of stress. E.g. some lubricants)
thixotropic (apparent viscosity decreases with duration of stress. E.g. non-drip paints and tomato ketchup)
visoelastic (having both viscous and elastic properties. E.g. bitumen and nylon)
Feb 13 04, 8:08 PM
|
|
Fun Trivia | 
Quizzes | 
Games
| 
People | 
Services | 
Help | 
Me
Sign up for your FREE FunTrivia ID! Compete,
play free games, and meet people! Click here...
Have a question that you want answered? Are you able to answer questions from other FunTrivia guests? Then you have come to the right
place!