The hobby of using a metal detector to hunt for buried coins or archaeological artifacts.

A hand-held device that uses electromagnetic induction to detect buried metal.

Alternative form of coordination compound

(sciences, countable) Any metal that has a specific gravity greater than about 5, especially one, such as lead, that is poisonous and may be a hazard in the environment.

plural of noble metal

A rare metallic chemical element of high economic value, such as gold and platinum.

(chemistry) a chemical bond in which mobile electrons are shared over many nuclei; this leads to electrical conduction

A brass alloy consisting of copper (55%), zinc (41-43%) and iron (1-3%), with the balance consisting of various other metals. The proportions used make the material harder and suitable for valves and bearings.

a form of brass, being an alloy of about 80% copper and 20% zinc, produced in thin sheets and used to make cheap jewelry

An alloy with high magnetic permeability, consisting of nickel (77%) and iron (15%) with traces of copper and molybdenum.