Lord Kelvin Quotes:
Ocupation: Physicist
Life: June 26, 1824 - December 17, 1907
Birthday: June 26
Death: December 17
In physical science a first essential step in the direction of learning any subject is to find principles of numerical reckoning and practicable methods for measuring some quality connected with it. I often say that when you can measure what you are speaking about, and express it in numbers, you know something about it; but when you cannot measure it, when you cannot express it in numbers, your knowledge is of a meagre and unsatisfactory kind; it may be the beginning of knowledge, but you have scarcely in your thoughts advanced to the stage of science, whatever the matter may be.
source: Popular Lectures and Addresses "Electrical Units of Measurement" (1889).
topic: Numbers, Quality, Matter, Measuring, Physical Science, Flying Machines, Measure For Measure
