MARTYN F. CHILLMAID / SCIENCE PHOTO LIBRARY MARTYN F. CHILLMAID / SCIENCE PHOTO LIBRARY
Evaporation deposit from fresh water. Mineral deposit left on a watchglass after the evaporation of fresh water. Fresh water contains some dissolved minerals, but not as much as salt water. For the same experiment carried out with salt water, see image A500/699.
Model release not required. Property release not required.