ClipArt ETC
This crystal of Calcium Phosphate, Apatite, represents a complex combination of hexagonal hemihedral forms produced by the pyramidal selection. The nine forms comprise the basal pinacoid ,(P); the prism of the first order, (M); second order, (u); and third order, (h); three pyramids of the first order, (r), (x), and (y); one pyramid of the second order, (s); and one of the third order, (m).

Calcium Phosphate, Apatite

This crystal of Calcium Phosphate, Apatite, represents a complex combination of hexagonal hemihedral…

This machine is used to make matches. A match is a consumable tool for lighting a fire in controlled circumstances on demand. Matches are readily available, being sold by tobacconists and many other kinds of shops. Matches are rarely sold singly; they are sold in multiples, packaged in match boxes or matchbooks.

Match Machine

This machine is used to make matches. A match is a consumable tool for lighting a fire in controlled…

A match is a consumable tool for lighting a fire in controlled circumstances. They are commonly sold by tobacconists and many other kinds of shops.

Match Stick

A match is a consumable tool for lighting a fire in controlled circumstances. They are commonly sold…

"At the freezing point [phosphorus] hardens, becomes brittle, and shows, on being broken, evidences of crystalline structure, the crystals being dodecahedral." —Hallock 1905

Phosphorus

"At the freezing point [phosphorus] hardens, becomes brittle, and shows, on being broken, evidences…

Picture represents clay retorts used in the distillation of phosphorus at high temperatures, with phosphorus, hydrogen, and carbon monoxide being produced.

Phosphorus Distillation

Picture represents clay retorts used in the distillation of phosphorus at high temperatures, with phosphorus,…