Popular Lectures and Addresses: Constitution of matter. 2d ed. 1891.-v. 2. Geology and general physics. 1894.-v. 3. Navigational affairs. 1891

Portada
Macmillan and Company, 1891
 

Otras ediciones - Ver todo

Términos y frases comunes

Pasajes populares

Página 229 - the beginning of this century, and find Rumford's conclusion regarding the heat generated in boring a brass gun : " It appears to me to be extremely difficult, if not quite impossible, to form any distinct idea of anything capable of being excited and communicated in the manner the heat was excited and communicated in these experiments, except it be MOTION ;
Página 224 - to be magnified up to the size of the earth, each constituent molecule being magnified in the same proportion. The magnified structure would be more coarse-grained than a heap of small shot, but probably less coarsegrained than a heap of footballs. 1
Página 224 - th of a centimetre. To form some conception of the degree of coarse-grainedness indicated by this conclusion, imagine a globe of water or glass, as large as a football, 1 to be magnified up to the size of the earth, each constituent molecule being magnified in the same proportion. The magnified structure would be more
Página 470 - SOUND AND MUSIC. A non-Mathematical Treatise on the Physical Constitution of Musical Sounds and Harmony, including the chief Acoustical Discoveries of Professor Helmholtz. By SEDLEY TAYLOR, MA, late Fellow of Trinity College, Cambridge.
Página 420 - and letting it go till it stops. I need scarcely say that the beginning and the maintenance of life on the earth is absolutely and infinitely beyond the range of all sound speculation in dynamical science. The only contribution of dynamics to theoretical biology is absolute negation of automatic
Página 171 - The heat equivalent would therefore be enough to raise the temperature of the material by 62°. This is barely, if at all, admissible, according to our- present knowledge, or, rather, want of knowledge, regarding the heat of combination of zinc an«d copper. But suppose the metal plates and
Página 358 - from matter circulating round the sun, within very short distances of his surface. The density of this meteoric cloud would have to be supposed so great that comets could scarcely have escaped as comets actually have escaped, showing no discoverable effects of resistance, after passing his surface within -a distance equal to
Página 230 - as a peculiar motion, probably a vibration, of the corpuscles of bodies, tending to separate them. . . ." " To distinguish this motion from others, and to signify the causes of our sensations of heat, &c., the name repulsive motion has been adopted.
Página 202 - proper appliances to the dynamical models before you to account for refractive dispersion in an infinitely fine-grained structure. It is not seventeen hours since I saw the possibility of this explanation. I think I now see it perfectly, but you will excuse my not going into the theory more fully under the circumstances.
Página 339 - tails with blue between, and then two red brushes in the space at right angles to the blue. If you do not see it, it is because your eyes are not sensitive enough, but a little training will give them the needed sensitiveness. If you cannot see it in this way try another method. Look into

Información bibliográfica