The Journal of Physical ChemistryCornell University, 1922 |
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absorption adsorbed adsorption alcohol alkali alum alumina aluminum ammonia amount aniline atoms azobenzene beta oxide boiling carbon catalyst Chem chemical chemistry chromic oxide chrysaniline colloidal solution color compounds concentration containing copper cupric chloride curve decrease determined Diethylamine dilute effect electrolyte electrons equilibrium ether experiments ferric formed fuchsine gelatine given in Table glass gluten heated in hydrogen hydrate hydrous chromic oxide hydrous oxide hydroxide imbibition increase iron jelly Jour light liquid litharge Material yield mercury metal method molecular molecules mordant nickel nitrate nitrobenzene observed obtained oxalic acid particles peptized perborate Phys potassium precipitation prepared present produced protein Rate of flow red lead reduced salt sample series constants sodium sodium perborate soluble solvent solvolysis stannic oxide substance sulphate sulphuric acid surface temperature theory tion tube vapor pressure volume Wilder D wool yield of aniline yield of azobenzene Zeit
Popular passages
Page 90 - She must be urged to her high task by a clear sense of duty, — Religion must be the cloud by day, and the pillar of fire by night, to guide her steps, — she must have fortitude to...
Page 292 - ... the effects resemble those produced by abundant water supply. A series of plants receiving varying amounts of nitrate are thus at somewhat different stages of their development at any given time, even though they were all sown on the same day those supplied with large quantities of nitrate being less advanced than the rest. If they could all be kept under constant conditions till they had ripened, this difference might finally disappear; but in crop production it is not possible much to delay...
Page 192 - ... the precipitated bubbles and sulphide particles. As a result of this preferential precipitation of gas on sulphide particles in the pulp, and its adhesion thereto, there are formed in the body of the pulp agglomerates consisting of one or more gas bubbles with sulphide particles firmly cemented to them. These agglomerates later rise to the surface in the form of a froth which is separated as concentrate. Observation of any of the pulpbody-concentration processes shows clearly this phenomenon...
Page 93 - ... without apparent immediate physical deterioration, withstand oxygen deficiency corresponding to altitudes of 20,000 feet or more. It is particularly interesting to note that when the rebreathing test is pushed beyond the limit that the man can endure, be it the equivalent of only 10,000 or 25,000, two different physiological types with all gradations between them are revealed. The fainting type collapses from circulatory failure and requires an hour or two to recover. Often the heart appears...
Page 91 - ... the war to Great Britain alone, the expense seems trivial as compared with the possible knowledge that might be gained by an investigation into this unexplored region of the earth. It might, indeed, prove of inestimable value to Science, and also throw additional light on the internal constitution of the earth in relation to minerals of high specific gravity. In Italy, at Lardarello, bore-holes have been sunk, which discharge large volumes of high-pressure steam, which is being...
Page 488 - DeBroglie's photographs opposite p. 197. It will be seen from these photographs that the atoms of each particular substance transmit the general X-radiation up to a certain critical frequency and then absorb^ all radiations of higher frequency than this critical value. The extraordinary significance of this discovery lies in the fact that it indicates that there is a type of absorption which is not due either to resonance or
Page 105 - The difference between a strong and weak gluten is apparently that between a nearly perfect colloidal gel with highly pronounced physico-chemical properties, such as pertain to emulsoids, and that of a colloidal gel in which these properties are much less marked. It is suggested that such differences may be due to the size of the gluten particles and that at least a part of the particles comprising the weak gluten may lie nearer the boundary between the colloidal and crystalloidal states of matter...
Page 86 - ... any more transparent than (14) would indicate ; but it is more than doubtful whether the calculations are applicable to such a case, where the fundamental supposition, that the phases are entirely at random, is violated. When the volume occupied by the molecules is no longer very small compared with the whole volume, the fact that two molecules cannot occupy the same space detracts from the random character of the distribution. And when, as in liquids and solids, there is some approach to a regular...
Page 448 - Bancroft expresses it, the colouring matters maybe either substantive or adjective; " the first including those matters which, when put into a state of solution, may be fixed with all the permanency of which they are susceptible, and made fully to exhibit their colours in or upon the dyed substance, without the interposition of any earthy or metallic basis ; and the second comprehending all those matters, which are incapable of being so fixed and made to display their proper colours, without the...
Page 488 - We have as yet no way of conceiving this new type of absorption in terms of a mechanical model. There is one result, however, which seems to be definitely established by all of this experimental work. Whether the radiation is produced by the stopping of a free electron, as in Duane and Hunt's experiments, and presumably also in blackbody experiments, or by the absorption and re-emission of energy by bound electrons, as in...