scientific theory

Such questions seem profoundly irrelevant, given that evolution has been an established scientific theory for many decades.

Here's how it works, how I measured it, and some scientific theory to back up the findings.

This idea entered almost imperceptibly into the minds of vocal teachers in the guise of a scientific theory of Voice Culture.

Such systems must accept human nature as a fact, and as the basis of a scientific theory.

First, let us define or describe heat according to the scientific theory.

Of course, in very advanced scientific theory we are driven again to myth-making.

It is, in fact, the scientific theory of the conservation of energy.