Atom Definition. An atom is the defining structure of an element, which cannot be broken by any chemical means. A typical atom consists of a nucleus of protons and neutrons with electrons orbiting this nucleus. However, an atom can consist of a single proton (i.e., the protium isotope of hydrogen) as a nucleus.
Mosaic art flourished in the Byzantine Empire from the 6th to the 15th centuries; that tradition was adopted by the Norman kingdom in Sicily in the 12th century, by eastern-influenced Venice, and among the Rus in Ukraine.osaic is an art form which uses small pieces of materials placed together to create a unified whole. The materials commonly used are marble or other stone, glass, pottery, mirror or foil-backed glass, or shells.
Byzantine art is the art of the Eastern Roman Empire. Constantine, the first Christian emperor of the Roman Empire, moved his capital from Rome to the old Greek city of Byzantium. He renamed the city Constantinople after himself.But the art of the Eastern Roman Empire that he founded is known as Byzantine.yzantine art is a combination of Eastern and classical Western art. The Byzantine Empire inherited the ideas and forms of art of the classical world of Greece and Rome.