The quantity of matter is its measure arising from its density and bulk conjointly. Thus air of a double density, in a double space is quadruple in quantity; and in a triple space is sextuple in quantity. The same thing is to be understood of snow, or fine dust or powders that are condensed, or any body. This quantity I call mass. And it is also known by the weight of each body, for it is proportional to the weight, as I have found by experiments on pendulums, very accurately made, which shall be shown hereafter.
Submitted January 03, 2016 at 05:02PM by Beatle7 http://ift.tt/1mYYq13
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