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• all-or-none law go
  (neurophysiology) a nerve impulse resulting from a weak stimulus is just as strong as a nerve impulse resulting from a strong stimulus
  
• rule, principle go
  a rule or law concerning a natural phenomenon or the function of a complex system
  
• Archimedes' principle, law of Archimedes go
  (hydrostatics) the apparent loss in weight of a body immersed in a fluid is equal to the weight of the displaced fluid
  
• Avogadro's law, Avogadro's hypothesis go
  the principle that equal volumes of all gases (given the same temperature and pressure) contain equal numbers of molecules
  
• Bernoulli's law, law of large numbers go
  (statistics) law stating that a large number of items taken at random from a population will (on the average) have the population statistics
  
• Benford's law go
  a law used by auditors to identify fictitious populations of numbers
  
• Bose-Einstein statistics go
  (physics) statistical law obeyed by a system of particles whose wave function is not changed when two particles are interchanged (the Pauli exclusion principle does not apply)
  
• Boyle's law, Mariotte's law go
  the pressure of an ideal gas at constant temperature varies inversely with the volume
  
• Coulomb's Law go
  a fundamental principle of electrostatics
  
• Dalton's law, Dalton's law of partial pressures, law of partial pressures go
  (chemistry and physics) law stating that the pressure exerted by a mixture of gases equals the sum of the partial pressures of the gases in the mixture
  
• distribution law go
  (chemistry) the total energy in an assembly of molecules is not distributed equally but is distributed around an average value according to a statistical distribution
  
• equilibrium law, law of chemical equilibrium go
  (chemistry) the principle that (at chemical equilibrium) in a reversible reaction the ratio of the rate of the forward reaction to the rate of the reverse reaction is a constant for that reaction
  
• Fechner's law, Weber-Fechner law go
  (psychophysics) the concept that the magnitude of a subjective sensation increases proportional to the logarithm of the stimulus intensity
  
• Fermi-Dirac statistics go
  (physics) law obeyed by a systems of particles whose wave function changes when two particles are interchanged (the Pauli exclusion principle applies)
  
• Gay-Lussac's law, Charles's law, law of volumes go
  (physics) the density of an ideal gas at constant pressure varies inversely with the temperature
  
• Henry's law go
  (chemistry) law formulated by the English chemist William Henry
  
• Hooke's law go
  (physics) the principle that (within the elastic limit) the stress applied to a solid is proportional to the strain produced
  
• Hubble's law, Hubble law go
  (astronomy) the generalization that the speed of recession of distant galaxies (the red shift) is proportional to their distance from the observer
  
• Kepler's law, Kepler's law of planetary motion go
  (astronomy) one of three empirical laws of planetary motion stated by Johannes Kepler
  
• Kirchhoff's laws go
  (physics) two laws governing electric networks in which steady currents flow: the sum of all the currents at a point is zero and the sum of the voltage gains and drops around any closed circuit is zero
  
• law of averages go
  a law affirming that in the long run probabilities will determine performance
  
• law of constant proportion, law of definite proportions go
  (chemistry) law stating that every pure substance always contains the same elements combined in the same proportions by weight
  
• law of diminishing returns go
  a law affirming that to continue after a certain level of performance has been reached will result in a decline in effectiveness
  
• law of effect go
  (psychology) the principle that behaviors are selected by their consequences
  
• law of equivalent proportions, law of reciprocal proportions go
  (chemistry) law stating that the proportions in which two elements separately combine with a third element are also the proportions in which they combine together
  
• law of gravitation, Newton's law of gravitation go
  (physics) the law that states any two bodies attract each other with a force that is directly proportional to the product of their masses and inversely proportional to the square of the distance between them
  
• Dalton's law, law of multiple proportions go
  (chemistry) law stating that when two elements can combine to form more than one compound the amounts of one of them that combines with a fixed amount of the other will exhibit a simple multiple relation
  
• law of mass action go
  (chemistry) the law that states the following principle: the rate of a chemical reaction is directly proportional to the molecular concentrations of the reacting substances
  
• law of thermodynamics go
  (physics) a law governing the relations between states of energy in a closed system
  
• Mendel's law go
  (genetics) one of two principles of heredity formulated by Gregor Mendel on the basis of his experiments with plants
  
• Newton's law of motion, Newton's law, law of motion go
  one of three basic laws of classical mechanics
  
• Ohm's law go
  electric current is directly proportional to voltage and inversely proportional to resistance
  
• Pascal's law, Pascal's law of fluid pressures go
  pressure applied anywhere to a body of fluid causes a force to be transmitted equally in all directions
  
• Pauli exclusion principle, exclusion principle go
  no two electrons or protons or neutrons in a given system can be in states characterized by the same set of quantum numbers
  
• periodic law, Mendeleev's law go
  (chemistry) the principle that chemical properties of the elements are periodic functions of their atomic numbers
  
• Planck's law go
  (physics) the basis of quantum theory
  
• Planck's radiation law go
  (physics) an equation that expresses the distribution of energy in the radiated spectrum of an ideal black body
  
• principle of relativity go
  (physics) a universal law that states that the laws of mechanics are not affected by a uniform rectilinear motion of the system of coordinates to which they are referred
  
• Stevens' law, power law, Stevens' power law go
  (psychophysics) the concept that the magnitude of a subjective sensation increases proportional to a power of the stimulus intensity
  
• Weber's law go
  (psychophysics) the concept that a just-noticeable difference in a stimulus is proportional to the magnitude of the original stimulus