24.3 MB (24.0 MB compressed)
3500 x 2431 pixels
29.7 x 20.6 cm ⏐ 11.7 x 8.1 in (300dpi)
POWER AND SYRED / SCIENCE PHOTO LIBRARY POWER AND SYRED / SCIENCE PHOTO LIBRARY
Kettle limescale. Coloured scanning electron micrograph (SEM) of fur or limescale (calcium carbonate and calcium sulphate crystals) from a domestic kettle. The fur is the result of repeated use of the kettle in a hard water area. Water hardness is a qualitative measure of dissolved calcium salts. When this water is boiled or evaporated the calcium salts precipitate to form crystals. Magnification: x550 at 5x7cm size.
Model release not required. Property release not required.