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.
Ancient Egyptian art is five thousand years old. It emerged and took shape in the ancient Egypt, the civilization of the Nile Valley. Expressed in paintings and sculptures, it was highly symbolic and fascinating-this art form revolves round the past and was intended to keep history alive.t emerged and took shape in the ancient Egypt, the civilization of the Nile Valley. Expressed in paintings and sculptures, it was highly symbolic and fascinating-this art form revolves round the past and was intended to keep history alive.