Private (rank)

A private is a soldier of the lowest military rank (equivalent to NATO Rank Grades OR-1 to OR-3 depending on the force served in).

In modern military parlance, 'private' is shortened to 'Pte' in the United Kingdom and other Commonwealth countries and to 'Pvt.' in the United States.

Etymology

The term derives from the medieval term "private soldiers" (a term still used in the British Army), denoting individuals who were either hired, conscripted, or mustered into service by a feudal nobleman commanding a battle group of an army. The usage of "private" dates from the 18th century.

Asia

Israel

In the Israel Defense Forces, טוראי Turai ("private") refers to the lowest enlisted rank. After 7–10 months of service (7 for combatants, 8 for combat support and 10 for non-combatants) soldiers are promoted from private to corporal (rav-turai or rabat), if they performed their duties appropriately during this time. Soldiers who take a commander's course, are prisoner instructors or practical engineers become corporals earlier. An IDF private wears no uniform insignia and is sometimes described as having a "slick sleeve" for this reason.

PVT

PVT may refer to:

Business

Military

Science

Other Uses

Equation of state

In physics and thermodynamics, an equation of state is a relation between state variables. More specifically, an equation of state is a thermodynamic equation describing the state of matter under a given set of physical conditions. It is a constitutive equation which provides a mathematical relationship between two or more state functions associated with the matter, such as its temperature, pressure, volume, or internal energy. Equations of state are useful in describing the properties of fluids, mixtures of fluids, solids, and even the interior of stars.

Overview

The most prominent use of an equation of state is to correlate densities of gases and liquids to temperatures and pressures. One of the simplest equations of state for this purpose is the ideal gas law, which is roughly accurate for weakly polar gases at low pressures and moderate temperatures. However, this equation becomes increasingly inaccurate at higher pressures and lower temperatures, and fails to predict condensation from a gas to a liquid. Therefore, a number of more accurate equations of state have been developed for gases and liquids. At present, there is no single equation of state that accurately predicts the properties of all substances under all conditions.