1 performed, undertaken, or brought about by free choice, willingly, or without being asked. a voluntary donation. 2 (of persons) serving or acting in a specified function of one's own accord and without compulsion or promise of remuneration.
The Ideal Gas Law is one of the Equations of State. Although the law describes the behavior of an ideal gas, the equation is applicable to real gases under many conditions, so it is a useful equation to learn to use. The Ideal Gas Law may be expressed as: PV = NkT.
Common law rule of non-liability which says that there is no liability for draining oil and gas beneath a neighbor's land. The owner of a tract of land owns all the oil and gas produced from a well on his land even if it is shown that some of that oil or gas is being drained from under his neighbor's land. Qualifies the ad coelom rule. Recognized the migratory nature of oil and gas and encourages exploration.