A gifted person might have an IQ that is 15 to 20 points higher than an average IQ. IQ tests may be used to determine placement in a gifted class. A genius might score 30 to 40 points more on an IQ test than someone with a normal IQ.
Moyal bracket. In physics, the Moyal bracket is the suitably normalized antisymmetrization of the phase-space star product. The Moyal Bracket was developed in about 1940 by JosÃ© Enrique Moyal, but Moyal only succeeded in publishing his work in 1949 after a lengthy dispute with Paul Dirac.
Molality, also called molal concentration, is a measure of the concentration of a solute in a solution in terms of amount of substance in a specified amount of mass of the solvent. This contrasts with the definition of molarity which is based on a specified volume of solution. A commonly used unit for molality in chemistry is mol/kg. A solution of concentration 1 mol/kg is also sometimes denoted as 1 molal.