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Lieutenant Emile Danco, another Belgian, was the physicist of the expedition. Unfortunately this gifted young man died at an early stage of the voyage a sad loss to the expedition. The magnetic observations were then taken over by Lecointe. The biologist was the Rumanian, Emile Racovitza. The immense mass of material Racovitza brought home speaks better than I can for his ability.
The following table gives the results of certain experiments made early in 1879, with a Gramme machine, by an able physicist, M Hagenbach, Professor at the University at Basle, and kindly furnished by him to the author: Revolutions per minute 935 919.5 900.5 893 Total resistance in Siemens' units 2.55 3.82 4.94 6.06
The physicist who calculates the stresses and strains of an aeroplane finds that in teaching man how to control nature he is also providing the means for his struggle, whether in peace or war, in commerce or on the battle-field. We soon find that the progress of technical skill is curiously inoperative in its effect on human thought and feeling.
He began at once the most exhaustive series of experiments ever undertaken by an American physicist, remaining in his laboratory for five days and nights, dining at his work bench on bread and cheese, and snatching a little sleep occasionally, when one of his assistants was on duty. It was finally discovered that the air had not been sufficiently exhausted from the lamps.
At the banquet given to celebrate his jubilee in 1896 as professor at Glasgow University, Lord Kelvin, the greatest physicist of our time, admitted with tears in his eyes and the note of tragedy in his voice, that when it came to explaining the nature of electricity, he knew just as little as when he had begun as a student, and felt almost as though his life had been wasted while he tried to grapple with the great mystery of physics.
That is a question as full of fascination for the physicist as the north-pole mystery has ever been for the generality of mankind. In the one case as in the other, any attempt to answer it to-day must partake largely of the nature of a guess, yet certain forecasts may be made with reasonable probability.
Tendency to equilibrium of force and to permanency of form, then, are the characters of that portion of the universe which does not live the domain of the chemist and physicist. Tendency to disturb existing equilibrium to take on forms which succeed one another in definite cycles is the character of the living world.
The Montgolfiers were undoubtedly first to send up balloons, but other experimenters were not far behind them, and before they could get to Paris in response to their invitation, Charles, a prominent physicist of those days, had constructed a balloon of silk, which he proofed against escape of gas with rubber the Roberts had just succeeded in dissolving this substance to permit of making a suitable coating for the silk.
When, under the slow strain, the strata suddenly give way or sink, and an earthquake results, then we know something has happened. A recent biologist and physicist thinks, and doubtless thinks wisely, that the reason why we have never been able to produce living from non-living matter in our laboratories, is that we cannot take time enough.
Does the state of a living body find its complete explanation in the state immediately before? Yes, if it is agreed a priori to liken the living body to other bodies, and to identify it, for the sake of the argument, with the artificial systems on which the chemist, physicist, and astronomer operate.
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