equilibrium constant (chemistry) the ratio of concentrations when equilibrium is reached in a reversible reaction (when the rate of the forward reaction equals the rate of the reverse reaction)
equilibrium a stable situation in which forces cancel one another
solar constant the rate at which radiant solar energy is received at the outer layer of the earth's atmosphere
rydberg constant a wave number characteristic of the wave spectrum of each element
color constancy the tendency for a color to look the same under widely different viewing conditions
colour constancy the tendency for a color to look the same under widely different viewing conditions
Hubble's constant (cosmology) the ratio of the speed of recession of a galaxy (due to the expansion of the universe) to its distance from the observer; the Hubble constant is not actually a constant, but is regarded as measuring the expansion rate today
Hubble constant (cosmology) the ratio of the speed of recession of a galaxy (due to the expansion of the universe) to its distance from the observer; the Hubble constant is not actually a constant, but is regarded as measuring the expansion rate today
equilibrium law (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
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Planck's constant the constant of proportionality relating the energy of a photon to its frequency; approximately 6.626 x 10^-34 joule-second
inconstant likely to change frequently often without apparent or cogent reason; variable
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time constant (electronics) the time required for the current or voltage in a circuit to rise or fall exponentially through approximately 63 per cent of its amplitude
constant uninterrupted in time and indefinitely long continuing
equidistant exactly as far from one point as from another
cosmological constant an arbitrary constant in the equations of general relativity theory
equilibration stabilization by bringing into equilibrium
dissociation constant the equilibrium constant for a reversible dissociation
gas constant (physics) the universal constant in the gas equation: pressure times volume = R times temperature; equal to 8.3143 joules per kelvin per mole