MARTYN F. CHILLMAID / SCIENCE PHOTO LIBRARY MARTYN F. CHILLMAID / SCIENCE PHOTO LIBRARY
Powder settled out of suspension at the bottom of a test tube of water. The powder is talcum powder and the experiment demonstrates that though insoluble materials can form a suspension when added to water in powdered form, the suspension will settle if the water is left undisturbed.
Model release not required. Property release not required.