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Updated: May 12, 2025
Other methods have been employed in late years by other experimenters, such as the method of Baron Eötvös, founded on the use of a torsion lever, the method of the ordinary balance, used especially by Professors Richarz and Krigar-Menzel and also by Professor Poynting, and the method of M. Wilsing, who uses a balance with a vertical beam.
It was the subject of skeletons that brought this boy back to my recollection. Before a very long time had elapsed, the village smarties began to feel an uncomfortable consciousness of not having made a very shining success out of their attempts on the simpleton from "old Shelby." Experimenters grew scarce and chary. Now the young doctor came to the rescue.
The experiments made by the brothers previous to the war had convinced Otto that previous experimenters in gliding flight had failed through reliance on empirical conclusions or else through incomplete observation on their own part, mostly of bird flight.
Our knowledge and experience of to-day enables us to see clearly why these coils under the conditions of the tests did not disclose any remarkable phenomena, and why able experimenters failed to perceive many of the curious effects which have since been observed.
The wonders of one age have been the toys and tools of the next through the entire history of mankind. The meaning of the demonstration was deep; its results were lasting The experimenters thereafter worked with a knowledge that their investigations must, in a sense, include the universe.
But the good effects of the era of experimental research, to which the theory of Stahl had given such an impetus, were showing in the attitude of the experimenters. The works of some of the older writers, such as Boyle and Hooke, were again sought out in their dusty corners and consulted, and their surmises as to the possible mixture of various gases in the air were more carefully considered.
This simple process of sharpening a stick would involve the "concepts", as the philosophers say, of a tool and bark and a point and an artificial weapon. But ages and ages were to elapse before the botanist would distinguish the various layers which constitute the bark, or successive experimenters come upon the idea of a bayonet to take the place of the spear.
France had to wait for the Lebaudy brothers, just as Germany had to wait for Zeppelin and Parseval. Two German experimenters, Baumgarten and Wolfert, fitted a Daimler motor to a dirigible balloon which made its first ascent at Leipzig in 1880.
We shall have to seek the exact meaning which ought to be given to the experiments on the emanation of these bodies, and to discover whether these experiments really imperil the law of Lavoisier. For some years different experimenters have also effected many very precise measurements of the weight of divers bodies both before and after chemical reactions between these bodies.
These two experimenters embarked on the study of dynamic flight contemporaneously with Maxim, Langley, Kress, and many other well-known pioneers, but it was not until 1908 that their first practical machine was completed.
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