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Updated: July 13, 2025


It was found forthwith by that other great German, Helmholtz, who pointed out that the falling matter through which heat may be generated might just as well be within the substance of the sun as without in other words, that contraction of the sun's heated body is quite sufficient to account for a long-sustained heat-supply which the mere burning of any known substance could not approach.

Bell was helped by his father, who taught him the laws of acoustics; by Helmholtz, who taught him the influence of magnets upon sound vibrations; by Koenig and Leon Scott, who taught him the infinite variety of these vibrations; by Dr. Clarence J. Blake, who gave him a human ear for his experiments; and by Joseph Henry and Sir Charles Wheatstone, who encouraged him to persevere.

Curious experience with a member of the Chinese Legation at a court reception. Sundry German public men. My relations with professors at the Berlin University. Lepsius, Curtius, Gneist, Von Sybel, Droysen. Hermann Grimm and his wife. Treitschke. Statements of Du Bois-Reymond regarding the expulsion of the Huguenots from France. Helmholtz and Hoffmann; a Scotch experience of the latter.

Heidelberg, like the German universities in general well understood that ability in its teachers, and not a pompous architectural display, makes a great institution. Its buildings were scattered and unpretending. Helmholtz had a lecture-room and laboratory apart, in a structure modern and graceful, but modest in its appeal. Here he discoursed to reverent throngs in tones never loud or confident.

Each Helmholtz of the future will give rise to a thousand Edisons. Exact knowledge must precede any form of applications. The reward of pure science will be, in the future as in the past, of its own kind, not fame nor money, but the joy of finding truth. To this joy no favor of fortune can add. The student of nature in all the ages has taken the vow of poverty.

And he went to gather them, returning in a few minutes with a large leaf full. He saw that Nancy, meanwhile, had taken up the book from where he dropped it to the ground; it lay open on her lap. 'Helmholtz! Away with him! 'No; I have opened at something interesting. She spoke as though possession of the book were of vital importance to her.

It was Helmholtz who discovered that the continual maintenance of the sun's temperature is due to the fact that the sun is neither solid nor liquid, but is to a great extent gaseous. His theory of the subject has gained universal acceptance.

An outline of the existing state of knowledge regarding the acoustic principles of tone-production must be drawn mainly from one source. In this work Prof. Scripture overthrows several of the conclusions of Helmholtz which had hitherto furnished the basis of all the accepted theories of vocal acoustics. Considering the eminently scientific character of all Prof.

Next let us note that psychologists always adduce the same examples when they wish to illustrate on the one hand, the processes of the persistent, tenacious attention, and, on the other hand, the developmental labor without which creative work does not come to pass: "Genius is only long patience," the saying of Newton; "always thinking of it," and like expressions of d'Alembert, Helmholtz and others, because in the one case as in the other the fundamental condition is the existence of a fixed, ever-active idea, notwithstanding its relaxations and its incessant disappearances into the unconscious with return to consciousness.

E. W. Brayley supported this view of planetary production in 1864, and it has recommended itself to Haidinger, Helmholtz, Proctor, and Faye. But the negative evidence of geological deposits appears fatal to it. The theory of solar energy now generally regarded as the true one was enounced by Helmholtz in a popular lecture in 1854.

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