| 释义 |
dispersivity|dɪspɜːˈsɪvɪtɪ|
[f. dispersive a. + -ity.]
a. The degree to which the refractive index of a substance varies with the wavelength of the light refracted; a numerical measure of the rate of change of refractive index with wavelength.
b. The degree to which one substance is dispersed in another, e.g. in a colloid.
1913J. B. Cohen Org. Chem. Adv. Students II. iv. 296 The difference between the specific refractivities for light of widely different wave length is called the specific dispersive power or dispersivity. 1947Nature 25 Jan. 114/1 Christiansen filters consist essentially of a powdered solid immersed in a liquid of similar refractive index but different dispersivity. 1984Oil & Gas Jrnl. 30 July 175 The way to study the ‘dispersivity’ of these clays is with a combination of the filtration time method and the zeta potential technique. |