September Gallery

Highfield Road, home to Coventry City F.C

General view of Highfield Road, home of Coventry City

© EMPICS Sport

Coloured SEM of dentine with protoplasmic fibres

Dentine. Coloured scanning electron micrograph (SEM) of a section of healthy human dentine, a dense calcified tissue which forms the bulk of the body of a tooth. Dentine is similar to bone in composition, but is more highly mineralised & consequently much harder than bone. Dentine forms when the organic matrix secreted by cells called odontoblasts becomes calcified. It occurs between the enamel and the inner dental pulp and is permeated by a network of minute channels. These channels contain protoplasmic processes (coloured pink) of the odontoblasts. Dentine is highly sensitive to both touch & extremes of temperature. Magnification: x1, 100 at 6x7cm size. x2, 960 at 8x6ins, x1570 at 10x7cm master size

© POWER AND SYRED/SCIENCE PHOTO LIBRARY

Kettle fur limescale

Kettle fur". Coloured scanning electron micrograph (SEM) of fur from a domestic kettle, showing the crystals that form in a hard water area. The fur consists of crystals of calcium carbonate and crystals of calcium sulphate (needles). Hardness is caused by calcium salts; calcium bicarbonate (temporary) and calcium sulphate (permanent). When water containing calcium bicarbonate is boiled, the soluble bicarbonate breaks down to give the insoluble calcium carbonate. When water containing calcium sulphate is evaporated, boiled or dries out, the calcium sulphate precipitates out of solution. Magnification: x1, 250 at 6x7cm size. x2, 960 at 8x6", x1570 at 10x7cm master size"

© POWER AND SYRED/SCIENCE PHOTO LIBRARY