- the power to refract.
Origin of refractivity
Examples from the Web for refractivity
Historical Examples of refractivity
In this case small temperature changes alter the refractivity of the liquid without appreciably affecting the quartz.
In air and other gases, at ordinary pressures, the dispersion is very small, because the refractivity is small.
Glasses can now be made differing considerably both in refractivity and dispersive power.