Definition. A vector field on two (or three) dimensional space is a function that assigns to each point (or) a two (or three dimensional) vector given by (or). That may not make a lot of sense, but most people do know what a vector field is, or at least theyâve seen a sketch of a vector field.
Montesquieu and Rousseau were two of the philosophes during the Enlightenment that had a profound impact on Europe and the world. Although they came from different backgrounds, one a nobleman, the other a commoner, both were dissatisfied with the French kings' rule.
The Language and Thought of the Child (1926) Jean Piaget In the same way that Alfred Kinsey spent years collecting specimens of and writing about the gall wasp before he launched himself on the study of human sexuality, Jean Piaget was a master of natural-world observation before he turned his mind to human matters.