numerically equal
71octane number — (of gasoline) a designation of antiknock quality, numerically equal to the percentage of isooctane by volume in a mixture of isooctane and normal heptane that matches the given gasoline in antiknock characteristics. Also called octane rating.… …
72effective atomic number — ▪ chemistry number that represents the total number of electrons surrounding the nucleus of a metal atom in a metal complex. It is composed of the metal atom s electrons and the bonding electrons from the surrounding electron donating atoms …
73ionization energy — ▪ chemistry also called ionization potential, in chemistry, the amount of energy required to remove an electron from an isolated atom or molecule. There is an ionization energy for each successive electron removed; the ionization energy… …
74proton — The positively charged unit of the nuclear mass; protons form part (or in hydrogen 1 the whole) of the nucleus of the atom around which the negative electrons revolve. [G. ntr. of protos, first] * * * pro·ton prō .tän n an elementary …
75pH — A measure of the acidity or alkalinity of a solution, numerically equal to 7 for neutral solutions, increasing with increasing alkalinity and decreasing with increasing acidity. Originally stood for the words, potential of hydrogen [6] …
76dry adiabatic lapse rate — The rate of decrease of the temperature with the height of a parcel of dry air lifted adiabatically through the earth’s atmosphere in hydrostatic equilibrium. This lapse rate is g/cp, where g is the acceleration of gravity and cp is the specific… …
77geopotential of the tropopause — The point in the standard atmosphere where the temperature stops dropping and becomes constant. This is the dividing line between the troposphere and the stratosphere. It is called the tropopause. Geopotential is the potential energy of a unit… …
78Absorptivity — In a solar thermal system, the ratio of solar energy striking the absorber that is absorbed by the absorber to that of solar energy striking a black body (perfect absorber) at the same temperature. The absorptivity of a material is numerically… …
79Mole — The quantity of a compound or element that has a weight in grams numerically equal to its molecular weight. Also referred to as gram molecule or gram molecular weight …
80admittance — noun 1》 the process or fact of entering or being allowed to enter. 2》 Physics a measure of electrical conduction, numerically equal to the reciprocal of the impedance …
