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Updated: August 14, 2024
But it is asserted on the strength of certain calculations by physicists that the earth cannot possibly have existed more than 40,000,000 years. This latter figure, based especially on the calculations of Lord Kelvin, caused doubts to be raised regarding evolution which prompted many scientists to renounce it as a working theory. Rudimentary structures received attention, and as a result, St.
Lord Kelvin himself urged the inadmissibility of the "extra-planetary" theory of meteoric supply on the very tangible ground that, if it were true, the year would be shorter now, actually by six weeks, than at the opening of the Christian era. The "intra-planetary" supply, however, is too scanty to be anything more than a temporary makeshift.
Although it lacked the refinements introduced by Lord Kelvin it was swung in double-cradles, and had the thirty-two points painted upon a card. The discovery of the compass, and even of the lodestone, are things wrapt in obscurity; but the lodestone had been known since at least the eleventh century, and the compass certainly since the thirteenth.
Edison travelled was, of course, the flagship of the squadron, and I had the good fortune to be included among its inmates. Here, besides several leading men of science from our own country, were Lord Kelvin, Lord Rayleigh, Professor Roentgen, Dr. Moissan the man who first made artificial diamonds and several others whose fame had encircled the world.
"Quite so," exclaimed Lord Kelvin, a look of sudden comprehension overspreading his features. "No doubt it is the internal constitution of the asteroid which is the cause of the anomaly. We must look into that. Let me see? This gentleman's weight is three and one-half times as great as it ought to be.
It is assumed on all sides that the ether is a continuous, incompressible body, possessing rigidity and elasticity. Lord Kelvin has even calculated the probable density of this ether, and its coefficient of rigidity. As might be supposed, it is all but infinitely tenuous as compared with any tangible solid, and its rigidity is but infinitesimal as compared with that of steel.
For we cannot really understand, say Pasteur, save primarily as a thinking peasant; or Lister and his antiseptic surgery better than as the shepherd, with his tar-box by his side; or Kelvin or any other electrician, as the thinking smith, and so on.
To mention but one of these, Lord Kelvin was led by this controversy over the earth's age to make his famous computation in which he proved that the telluric structure, as a whole, must have at least the rigidity of steel in order to resist the moon's tidal pull as it does.
Only a few men in the world had the range of thought regarding the new doctrine of energy that Lord Kelvin had at the middle of the century. The few leaders then saw clearly enough that if one form of energy is in reality merely an undulation or vibration among the particles of "ponderable" matter or of ether, all other manifestations of energy must be of the same nature.
Leslie, however, had no solution to offer to this poser, but she did have a sudden idea that made her stop short in the road and gasp: "Do you realize, Phyllis Kelvin, that we are doing a very questionable yes, a wrong thing in keeping the 'Dragon's Secret, when it evidently belongs to this girl?" "How do you know it belongs to this girl?" countered Phyllis.
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