a number indicating the degree of sunspot activity on the sun as a factor of observer idiosyncrasies, the number of sunspot groups, and the number of individual sunspots.
- Relative temperature scale
relative temperature scale A temperature scale in which measurements are amounts that are more or less than a reference amount. In the Celsius scale, for example, the reference amount is set as the freezing point of water, or zero. Other measurements are made relative to this point. Relative temperature scales have both positive and negative […]
noun, Mathematics. 1. a topology of a subset of a topological space, obtained by intersecting the subset with every open set in the topology of the space.
[wind] /wɪnd/ noun 1. the velocity or direction of airflow with respect to the body it surrounds, especially an airfoil.
verb (used with object), relativized, relativizing. 1. to regard as or make relative. verb 1. to make or become relative 2. (transitive) to apply the theory of relativity to