Speculum
A copper-tin alloy with 33 to 45% of tin that has very high optical reflectivity when polished. Used in Gaul and Britain during the period around the time of Caesar′s invasion.
Subjects: Mechanical Engineering
A copper-tin alloy with 33 to 45% of tin that has very high optical reflectivity when polished. Used in Gaul and Britain during the period around the time of Caesar′s invasion.
Subjects: Mechanical Engineering