Proceedings of the American Academy of Arts and Sciences, Volumen51Metcalf and Company, 1915 Vol. 12 (from May 1876 to May 1877) includes: Researches in telephony / by A. Graham Bell. |
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Página 55
... pressure . There are not many measurements of latent heat or change of volume even at atmospheric pressure . Still fewer measurements of the effect of pres- sure have been made ; many of these are due to Tammann , whose pressure range ...
... pressure . There are not many measurements of latent heat or change of volume even at atmospheric pressure . Still fewer measurements of the effect of pres- sure have been made ; many of these are due to Tammann , whose pressure range ...
Página 56
... pressure . In the previous discussion it was not necessary , therefore , to consider certain special relations between the thermodynamic constants at the maximum points , but now these relations become of importance . A discussion of ...
... pressure . In the previous discussion it was not necessary , therefore , to consider certain special relations between the thermodynamic constants at the maximum points , but now these relations become of importance . A discussion of ...
Página 57
... pressure . In this first paper I will give the preliminary thermodynamic discussion which will be necessary to all the work on solid transitions , and also data for a number of such transitions . Discussion of the data may be profitably ...
... pressure . In this first paper I will give the preliminary thermodynamic discussion which will be necessary to all the work on solid transitions , and also data for a number of such transitions . Discussion of the data may be profitably ...
Página 59
... pressure was measured were also replaced a number of times . These were fre- quently destroyed when the substance under investigation decomposed at the higher temperatures and the decomposition products found their way to all parts of ...
... pressure was measured were also replaced a number of times . These were fre- quently destroyed when the substance under investigation decomposed at the higher temperatures and the decomposition products found their way to all parts of ...
Página 60
... pressure and temperature pro- duced by impurities . Zi Then we know that at this point the thermodynamic potentials are equal , or Z1 Z2 . Let us now subject the phase ( 2 ) to a tempera- ture increment ( Ar ) only , but the phase ( 1 ) ...
... pressure and temperature pro- duced by impurities . Zi Then we know that at this point the thermodynamic potentials are equal , or Z1 Z2 . Let us now subject the phase ( 2 ) to a tempera- ture increment ( Ar ) only , but the phase ( 1 ) ...
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abiotic abiotic action abiotic effects abiotic radiations absorption albite antheridia atoll axostyle basal cell Birch-Hirschfeld blepharoplast cataract change of volume chromatic basal rod chromosomes coral cornea corneal corpuscles crystals curve cytoplasm cytostome depth diameter diaphragm distally energy ergs erythropsia experiments exposed exposure feldspars FIGURE filaments flagella flagellum glass granules heat effects hyaline II-III intensity islands lagoon larva later lens epithelium Leptomyrmex less longis magnetite magnetite arc measurements mesenteries microcline minutes mitosis myxosporidium nearly normal nuclei observed obtained ocean parabasal paradesmose perithecium perthitic phase photophthalmia Pleistocene posterior pressure produced quartz reaction receptacle reefs retina scotoma screen sea-level shown side slightly species spectrum spore sporoblasts stage stained surface temperature theory thermic thickness tion transition line Trichomonas triple point ultra violet ultra violet light undulating membrane usually values velocity wave length μμ
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Página 734 - ... condition. Turn-over pig molds when not in use should be left upside down to prevent their accumulating moisture. GLASS-BLOWERS' CATARACT It has been recognized for many years that glass-blowers appear to be particularly susceptible to a special form of cataract, which begins in the posterior part of the lens, the remainder of the lens for a long time remaining clear. The cataract most frequently appears in the left eye, which is more exposed to the molten mass. The length of time necessary for...
Página 510 - Koch, G. von. 1882. Ueber die Entwicklung des Kalkskeletes von Asteroides calycularis und dessen morphologischer Bedeutung. Mitt. Zool. Sta. Neapel, Bd. Ill, p. 284-292, Taf. 22-24. 1897. Entwicklung von Caryophyllia cyathus.
Página 238 - ... perhaps, the most interesting conclusion in this volume), that the movements must either have been uniform and exceedingly slow, or have been effected by small steps, separated from each other by long intervals of time, during which the reef-constructing polypifers were able to bring up their solid frame-works to the surface.
Página 625 - The investigation has been assisted in great measure by generous grants from the Bache Fund of the National Academy of Sciences and from the Rumford Fund of the American Academy of Arts and Sciences. The...
Página 479 - AE Kennelly and GW Pierce. The Impedance of Telephone Receivers as Affected by the Motion of their Diaphragms.
Página 541 - ... group of the same rank, under the same name. When a species is moved from one genus into another, its specific epithet must be changed if it is already borne by a valid species of that genus.
Página 166 - The causes of the general rise of sea-level in the latest geological time might perhaps be connected with those climatic changes which the earth underwent in the Glacial period. If, during that time, northern Europe, northern North America, and the Antarctic regions were simultaneously glaciated, a considerable mass of water must have been removed from the ocean, and, if the thickness of ice be assumed as 1,000 meters, the sea-level must have been 150 meters below its present...
Página 740 - Bell indicate their belief most clearly in the statement "as regards definite pathological effects or permanent impairment of vision from the exposure to the luminous rays alone, we have been unable to find either clinically or experimentally anything of a positive nature. "Experiments on animals and on the human subject as well prove that the retina may be flooded for an hour or more with light of extreme intensity (not less than 50,000 lux) without any sign of permanent injury. Only when the concentration...
Página 196 - ... the atolls of the Low Archipelago the depth varies from 20 to 38 fathoms, and in the Marshal Group, according to Chamisso, from 30 to 35 : in the Caroline atolls it is only a little less. Within the Maldiva atolls there are large spaces with 45 fathoms, and some soundings are laid down of 49 fathoms. The greater part of the bottom in most lagoons, is formed of sediment; large spaces have exactly the same depth...
Página 364 - Trichomonaden und ihre Organisation im allgemeinen. Arch. f. Protist., Bd. 39 MARTIN, CH, AND ROBERTSON, MURIEL 1911 Further observations on the coecal parasites of fowls with some references to the rectal fauna of other vertebrates. Part I. Quart Jour. Mic. Sci., vol. 57. SWEZY, OLIVE 1916 The kinetonucleus of flagellates and the binuclear theory of Hartmann. Univ. of C'al. Publ. in Zool., vol. 16.