Ideal gas except for the specification of these constants. The results of the quantum Boltzmann gas are used in a number of cases including the Sackur–Tetrode equation for the entropy of an ideal gas and the Saha ionization equation for a weakly ionized plasma. The classical thermodynamic properties of an ideal gas can be described by two equations of state: The ideal gas law is the equation of state for an ideal gas, given by: where The ideal gas law is an extension of experimentally discovered gas laws. It can also be derived from microscopic considerations. Real fluids at low density and
Negative and positive atheism Smith as synonyms of the less-well-known categories of implicit and explicit atheism, also relating to whether an individual holds a specific view that gods do not exist. ""Positive"" atheists explicitly assert that it is false that any deities exist. ""Negative"" atheists assert they do not believe any deities exist, but do not explicitly assert it is "true" that no deity exists. Those who do not believe any deities exist, but do not assert such non-belief, are included among "implicit atheists". Among "implicit" atheists are thus included the following: children and adults who have never heard of deities; people who have