- #1
Micko
- 43
- 0
Hello,
I have found the following definition in wikipedia:
A fluid is defined as a substance that continually deforms (flows) under an applied shear stress. All liquids and all gases are fluids.
However, it's pretty hard for me to understand this definition. Shear stress represents tangential pressure applied. Fluid will also deform under perpendicular force. Why tangential force is used in definition?
Thanks
I have found the following definition in wikipedia:
A fluid is defined as a substance that continually deforms (flows) under an applied shear stress. All liquids and all gases are fluids.
However, it's pretty hard for me to understand this definition. Shear stress represents tangential pressure applied. Fluid will also deform under perpendicular force. Why tangential force is used in definition?
Thanks