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Author: Archibald Byron Macallum Publisher: Forgotten Books ISBN: 9780265801147 Category : Languages : en Pages : 90
Book Description
Excerpt from Surface Tension and Vital Phenomena It must also be admitted that in some signal instances in which the physicist and chemist attempted to aid in the solution of biological problems the result has not been quite satisfactory. Especially has this been the result in the case of membranes. Arrhenius' theory of dissociation and van 't Hofi's gas theory of solutions were supported by such an array of facts from the side of physics and physical chemistry that there appeared to be no question whatever regarding their universal validity, and their application in the study of the phenomena of osmosis was urged with acclaim by physical chemists and eagerly welcomed by physiologists. The theories promised at first to explain all the processes involved in difiusion through membranes, but the final result was not in all cases what was expected. In illustration of this. One instance will suffice. The osmotic concentration of the blood in man as measured by the depression of the freezing point (a) ranges from -o.s6 to The concentration of the urine indicated in the same way is, except under rare conditions. Always greater than this, and its value usually ranges between - l.50° and -s.oo° C that is, from more than two to five times that of the blood plasma. This result is the very opposite of that which should be expected from the application of the theories of Arrhenius and van 't Hoff. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.
Author: Archibald Byron Macallum Publisher: Forgotten Books ISBN: 9780265801147 Category : Languages : en Pages : 90
Book Description
Excerpt from Surface Tension and Vital Phenomena It must also be admitted that in some signal instances in which the physicist and chemist attempted to aid in the solution of biological problems the result has not been quite satisfactory. Especially has this been the result in the case of membranes. Arrhenius' theory of dissociation and van 't Hofi's gas theory of solutions were supported by such an array of facts from the side of physics and physical chemistry that there appeared to be no question whatever regarding their universal validity, and their application in the study of the phenomena of osmosis was urged with acclaim by physical chemists and eagerly welcomed by physiologists. The theories promised at first to explain all the processes involved in difiusion through membranes, but the final result was not in all cases what was expected. In illustration of this. One instance will suffice. The osmotic concentration of the blood in man as measured by the depression of the freezing point (a) ranges from -o.s6 to The concentration of the urine indicated in the same way is, except under rare conditions. Always greater than this, and its value usually ranges between - l.50° and -s.oo° C that is, from more than two to five times that of the blood plasma. This result is the very opposite of that which should be expected from the application of the theories of Arrhenius and van 't Hoff. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.
Author: C. A. Chant Publisher: Forgotten Books ISBN: 9780243081592 Category : Science Languages : en Pages : 78
Book Description
Excerpt from Supplement to Merchant's Elementary Mechanics Dealing With the Phenomena of Surface Tension and the Flow of Liquids The surface becomes more and more convex until at last the skin breaks and the water runs over the edge. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.
Author: N. Ernest Dorsey Publisher: Forgotten Books ISBN: 9781334253881 Category : Science Languages : en Pages : 38
Book Description
Excerpt from Measurement of Surface Tension Wagstaff (88) used a plate pressed against the inside of a cylinder. The coordinates of a series of points upon the projection of the menis cus upon the plate were measured, and from these and the radius of the cylinder the value of T was calculated. The main advantages claimed for this method over the use of capillary tubes is the facility with which the apparatus can be cleaned and the fact that no very small distances have to be measured. The volume of liquid required is large. Obviously in all these cases the surface in the reservoir must be plane or due allowance must be made for its curvature. In the case of plates, it is also necessary that observations be confined to those portions that are so far from the edges that the shape of the meniscus is the same as if the plates were of infinite extent. For these reasons plates are not so suitable as tubes. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.
Author: Edward Chapman Converse Publisher: Forgotten Books ISBN: 9780265547168 Category : Science Languages : en Pages : 56
Book Description
Excerpt from An Experimental Determination of the Surface Tension of Liquid Air The frame must be raised several centimeters above the surface of the liquid before the true films form. It was found that the force required to raise the frame increased with the distance, up to a certain point, then decreased again. The pull at this point is known as the maximum weight and serves as a'basis for another method of measuring surface tension. This method can be used to advantage upon liquids whose films are too delicate to hold long enough for direct measurement of their tension. The excess of weight over the tension of films is due chiefly to the weight of the liquid held between them, Corrections must'hs applied for this and for buoyancy, pull upon the sides of the frame due to surface tension, etc. Otherwise the method is the same as above. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.
Author: Herman Koch Publisher: Hogarth ISBN: 0385346840 Category : Fiction Languages : en Pages : 306
Book Description
NEW YORK TIMES BESTSELLER • The darkly suspenseful tale of two families struggling to make the hardest decision of their lives—all over the course of one meal. Now a major motion picture. “Chilling, nasty, smart, shocking, and unputdownable.”—Gillian Flynn, author of Gone Girl It’s a summer’s evening in Amsterdam, and two couples meet at a fashionable restaurant for dinner. Between mouthfuls of food and over the scrapings of cutlery, the conversation remains a gentle hum of polite discourse. But behind the empty words, terrible things need to be said, and with every forced smile and every new course, the knives are being sharpened. Each couple has a fifteen-year-old son. The two boys are united by their accountability for a single horrific act—an act that has triggered a police investigation and shattered the comfortable, insulated worlds of their families. As the dinner reaches its culinary climax, the conversation finally touches on their children, and as civility and friendship disintegrate, each couple shows just how far they are prepared to go to protect those they love. A NEW YORK TIMES NOTABLE BOOK “A European Gone Girl . . . A sly psychological thriller.”—The Wall Street Journal “Brilliantly engineered . . . The novel is designed to make you think twice, then thrice, not only about what goes on within its pages, but also the next time indignation rises up, pure and fiery, in your own heart.”—Salon “You’ll eat it up, with some fava beans and a nice Chianti.”—Entertainment Weekly “[Koch] has created a clever, dark confection . . . absorbing and highly readable.”—New York Times Book Review “Tongue-in-cheek page-turner.”—The Washington Post “[A] deliciously Mr. Ripley-esque drama.”—O: The Oprah Magazine
Author: Archibald Byron Macallum
Author: Archibald Byron Macallum
Author: 
Author: C. A. Chant
Author: N. Ernest Dorsey
Author: 
Author: John Robert Levitt
Author: Edward Chapman Converse
Author: Mary Burnham
Author: Herman Koch
Author: