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Sculptural Materials in Ancient Greece The principal materials for Greek sculpture were stone (especially marble) and bronze – limestone, terracotta and wood being much inferior…

Igneous Rock Definition Igneous rocks are formed by the cooling and hardening of molten material called magma. It is one of the three main rock…

Optic Nerve Definition Optic nerve is either of the second pair of cranial nerves, which carry sensory information relating to vision from the retina of…

Carbonate Ester Definition Carbonate ester is a salt or ester of carbonic acid, containing the group CO3. The reaction of carbonic acid with a metal…

Reflexive Axiom: A number is equal to itelf. (e.g a = a). This is the first axiom of equality. It follows Euclid’s Common Notion One:…

Lumbar Plexus Definition Lumbar plexus is a group of four nerves (L1, L2, L3 and L4) that are located in front of the hip joint…

The Classical period witnessed a rapid improvement in Greek statuary. There was a dramatic rise in the technical skills of Greek sculptors in their ability…

Propylene Carbonate Definition Propylene carbonate is a clear, odorless solvent with a high boiling point. It is an organic compound with the formula CH3C2H3O2CO. In…

Characteristics of Archaic Greek Sculpture Greek art and sculpture has had a profound effect throughout the ages. Many of the styles have been reproduced and…

Peripheral Nervous System Definition Peripheral nervous system (PNS) is the part of the nervous system in vertebrate animals that lies outside of the brain and…

The Greeks developed three architectural systems, called orders, each with their own distinctive proportions and detailing. The Greek orders are: Doric, Ionic, and Corinthian. The…

Nickel Definition Nickel is a silvery, hard, ductile metallic element that occurs in ores along with iron or magnesium. It occurs sparingly in nature in…