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They had a sufficiency to convince themselves, in the collision of two bodies, which they could contemplate, and in the known laws of that motion, which these always communicate by reason of their greater or less compactness; from whence they ought to have inferred, that the density of subtle or ethereal matter, being considerably less than that of the planets, it could only communicate to them a very feeble motion, quite insufficient to produce that velocity of action, of which they could not possibly avoid being the witnesses.
In our country, with a population of some thirty to the square mile, while in the kingdom of Saxony the density of the population is 830.6 to the square mile, it is hard to believe that we suffer from overcrowding so much as from overindulgence, wastefulness, and fussy legislation.
The primary planets shew a progressive increase of bulk and diminution of density, from the one nearest to the sun to that which is most distant. With respect to density alone, we find, taking water as a measure and counting it as one, that Saturn is 13/32, or less than half; Jupiter, 1 1/24; Mars, 3 2/7; Earth, 4 1/2; Venus, 5 11/15; Mercury 9 9/10, or about the weight of lead.
Out on the narrow wharf Payne caught his foot on the painter of a rowboat moored near the Swastika's stern, and found the soft blue haze of the subtropical night still undisturbed save for the first ray of dawn. The tree growth on the key was jungle-like in density. A path had been cut through to the eastern shore.
It is not, properly speaking, weight which is the cause of this retardation, since the boats are going down and not upwards; but it is the same cause which also increases the weight in bodies that have greater density, which are, that is to say, less porous and more charged with matter that is proper to them: for the matter which passes through the pores, not receiving the same movement, must not be taken into account.
Owing to the density of the crowd of reposing whales, more immediately surrounding the embayed axis of the herd, no possible chance of escape was at present afforded us. We must watch for a breach in the living wall that hemmed us in; the wall that had only admitted us in order to shut us up.
In a gas the speed may be considerable, but the density is exceedingly small; in a liquid the speed would be likely to be small, though the density may be considerable; and in both cases the inertia resistance offered to displacement is practically nil. A body might move with more or less freedom through the vibrating mass, but as a whole it would be rigid.
"You see," he explained, "the principle on which this is based is that a mass of tempered steel may be impressed with and will retain magnetic fluxes varying in density and in sign in adjacent portions of itself little deposits of magnetic impulse.
Never had so vast and black a presentment of slumber, so instinct with the sovereign nobility of death, appeared to Pierre. At ten minutes to nine he at last made up his mind and went towards the bronze portal. Only one of the folding doors was now open at the end of the right-hand porticus, where the increasing density of the gloom steeped everything in night.
On a planet only ten miles in diameter, assuming the same mean density as the earth's, which is undoubtedly too much, the force of gravity would be so slight that an average man would not weigh more than three ounces, and could jump off into space whenever he liked.
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