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Bronze Age

(Encyclopedia)Bronze Age, period in the development of technology when metals were first used regularly in the manufacture of tools and weapons. Pure copper and bronze, an alloy of copper and tin, were used indiscr...

Copper Age

(Encyclopedia)Copper Age: see Bronze Age.

bronze sculpture

(Encyclopedia)bronze sculpture. Bronze is ideal for casting art works; it flows into all crevices of a mold, thus perfectly reproducing every detail of the most delicately modeled sculpture. It is malleable beneath...

Iron Age

(Encyclopedia)Iron Age, period in the development of industry that begins with the general use of iron and continues into modern times. In Asia, Egypt, and Europe it was preceded by the Bronze Age. It did not begin...

bronze, in art

(Encyclopedia)bronze, in art: see bronze sculpture. ...

bronze, in metallurgy

(Encyclopedia)bronze, in metallurgy, alloy of copper, tin, zinc, phosphorus, and sometimes small amounts of other elements. Bronzes are harder than brasses. Most are produced by melting the copper and adding the de...

Ice Age

(Encyclopedia)Ice Age: see Pleistocene epoch.

Golden Age

(Encyclopedia)Golden Age, in classical mythology: see mythology. ...

Gilded Age

(Encyclopedia)Gilded Age, a term used to describe a period in United States history—from roughly 1870 to 1900—when the wealthy elite consisted of industrialists w...

mental age

(Encyclopedia)mental age: see intelligence.