Journal of the Franklin Institute, Հատոր 180Pergamon Press, 1915 Vols. 1-69 include more or less complete patent reports of the U. S. Patent Office for years 1825-1859. cf. Index to v. 1-120 of the Journal, p. [415] |
From inside the book
Արդյունքներ 100–ի 1-ից 5-ը:
Էջ 13
... means only thousands of foot - pounds . In a transmission network of thousands of miles extent a surge of the system may amount to many thousands of horse - power . But even a surge of a hundred horse - power only is liable to be very ...
... means only thousands of foot - pounds . In a transmission network of thousands of miles extent a surge of the system may amount to many thousands of horse - power . But even a surge of a hundred horse - power only is liable to be very ...
Էջ 17
... means of measuring the sanitary quality of water supply through biological methods , and then of the accomplishments upon the public health of modern engineering works to conserve or im- prove the quality of water . The engineering ...
... means of measuring the sanitary quality of water supply through biological methods , and then of the accomplishments upon the public health of modern engineering works to conserve or im- prove the quality of water . The engineering ...
Էջ 18
... mean , however , that pollution can not and should not be controlled within limits that will not prove overburdensome to those ... means of measuring the quality of water . They are simply a rough indicator 18 [ J. F. I. GEORGE W. FULLER .
... mean , however , that pollution can not and should not be controlled within limits that will not prove overburdensome to those ... means of measuring the quality of water . They are simply a rough indicator 18 [ J. F. I. GEORGE W. FULLER .
Էջ 21
... means of the colonies formed by growth on some solid nutrient medium . The method formerly used and still in most general practice is to count the total number of colonies produced by incubation on solid gelatine in forty - eight hours ...
... means of the colonies formed by growth on some solid nutrient medium . The method formerly used and still in most general practice is to count the total number of colonies produced by incubation on solid gelatine in forty - eight hours ...
Էջ 63
... means of Ostwald's dilution law , is found to vary with dilution . Whether the degree of dissociation of these electrolytes is derived from the conductivity ( a = ^ ) , or from the freezing - point lowering , α = do - di di ( n - 1 ) ...
... means of Ostwald's dilution law , is found to vary with dilution . Whether the degree of dissociation of these electrolytes is derived from the conductivity ( a = ^ ) , or from the freezing - point lowering , α = do - di di ( n - 1 ) ...
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Էջ 386 - THE BOYDEN PREMIUM URIAH A. BOYDEN, ESQ., of Boston, Mass., has deposited with THE FRANKLIN INSTITUTE the sum of one thousand dollars, to be awarded as a premium to "Any resident of North America who shall determine by experiment whether all rays of light,* and other physical rays, are or are not transmitted with the same velocity.
Էջ 104 - As a unit of resistance, the international ohm, which is based upon the ohm equal to io9 units of resistance of the CGS system of electro-magnetic units, and is represented by the resistance offered to an unvarying electric current by a column of mercury at the temperature of melting ice, 14.4521 grammes in mass, of a constant cross-sectional area and of the length of 106.3 centimeters.
Էջ 640 - Esq., awarded annually to those workers in physical science or technology, without regard to country, whose efforts, in the opinion of the Institute, acting through its Committee on Science and the Arts, have done most to advance a knowledge of physical science or its applications.
Էջ 640 - ... and containing the name and address of the author of the memoir. It shall be the duty of the Secretary of the FRANKLIN INSTITUTE to keep these envelopes securely and unopened until the Judges, shall have finished their examination ; when, should the Judges be of opinion that any one of the memoirs is worthy of the Premium , the corresponding envelope shall be opened, and the name of the author communicated to the INSTITUTE.
Էջ 252 - This medal is awarded for discovery or original research, adding to the sum of human knowledge, irrespective of commercial value ; leading and practical utilizations of discovery; and invention, methods or products embodying substantial elements of leadership in their respective classes, or unusual skill or perfection in workmanship.
Էջ 252 - States of competent scientific ability, to whom the memoir shall be referred ; and the said Judges shall examine the memoirs and report to THE FRANKLIN INSTITUTE whether, in their opinion, any, and, if so, which of the memoirs is worthy of the Premium.
Էջ 512 - January, one thousand nine hundred and fifteen, will, as soon as possible after this date, be transmitted to the Committee of Judges. 3. The Board of Managers of THE FRANKLIN INSTITUTE shall, before the first day of January, one thousand...
Էջ 386 - Arts, undertakes to make investigations free of charge and to recommend for the award all meritorious inventions. Applications should be addressed to the Secretary of THE FRANKLIN INSTITUTE, from whom all information relative thereto may be obtained.
Էջ 48 - Hazen clearly indicate that where one death from typhoid fever has been avoided by the use of a better water, a certain number of deaths, probably two or three, from other causes, have been avoided.