When was the vector notation in physics and other sciences first introduced?

The vector notation in physics is a very compact and easy way to write things down, and according to Feynman it also saves print. When exactly did scientists realize that they were summarizing things with vector notation?

Recap: I know that Oliver Heaviside introduced vector calculus in the 20th century; I am asking about the vector notation in Newton's law, for example, or four-vectors, for that matter.

• What exactly is meant by "the vector notation"? Is it the little arrow drawn over symbols in eastern Europe? Or the boldface symbols in english speaking countries? Or do you mean column vector notation? Apr 18, 2019 at 6:24