Sylvanus P. Thompson. "Sound-Mills" in Nature, February 14, 1884, pp 363-364, in the weekly issue of pp 353-376, and with several text illustrations. Nice copy, the weekly issue removed from a larger bound volume. Very Good. $45
The opening paragraph of the Thompson paper describes the instrument in general, and introduces the work of Dvorak:
"After the notable researches of [Sir William] Crookes on radiation, which culminated in the discovery of the radiometer, or lightmill, it was a natural transition of thought which suggested to several minds almost simultaneously the possibility of devising an apparatus which should rotate under the influence of sound waves as does the radiometer under the influence of the rays of light and heat. Such instruments were indeed devised independently about six years ago by Lord Rayleigh, by Prof Alfred M. Mayer of Hoboken, by Mr Edison, the well-known inventor, by Prof Mach of Prague, by Dr A. Haberditzel of Vienna, and by Prof Dvorak of the University of Agram (in Croatia). These researches, though of great scientific interest, have been somewhat overlooked in the rush of scientific inventions during the intervening years. During the course of the past year, however, Dvorak has given to the world, in the pages of the Zeitschrift der Instrumentenkunde (vol. iii, Heft 4), a detailed account of his experiments, together with figures of various piece of apparatus hitherto undescribed. We propose to give a resume of the principal points of Dvorak’s researches..."
Much of the rest of the paper describes four different Dvorak instruments.
Comments