Silly Putty

Purpose

Demonstrate a non-Newtonian fluid.

Equipment

Silly putty on stand.

Images

f4-04

Description

Set a gwob of silly putty on the stand. Slowly it "flows" over the edge. If it is formed into a ball it will bounce off the floor. Silly putty is a non-Newtonian fluid: it's viscosity increases as it is subjected to greater pressure.◙