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 4
... factor indicators are required to insure the division of load without excessive waste currents ; frequency in- dicators and synchronizing devices to safely connect machines into the system . With hundreds of feeders radiating from the ...
... factor indicators are required to insure the division of load without excessive waste currents ; frequency in- dicators and synchronizing devices to safely connect machines into the system . With hundreds of feeders radiating from the ...
Էջ 19
... factor involving the public health to a degree much greater than has been recognized by the majority of sanitarians . Some of the more important recent data will be shown with the aid of lantern slides to illustrate specifically these ...
... factor involving the public health to a degree much greater than has been recognized by the majority of sanitarians . Some of the more important recent data will be shown with the aid of lantern slides to illustrate specifically these ...
Էջ 20
... factor which must be con- sidered . We do not know with exact certainty what diseases are disseminated by water . A certain number certainly can be attributed at times to a water supply . Others are uncertain . There may be still others ...
... factor which must be con- sidered . We do not know with exact certainty what diseases are disseminated by water . A certain number certainly can be attributed at times to a water supply . Others are uncertain . There may be still others ...
Էջ 22
... factor militating against the useful purpose of this total bacterial count test is that the incubation was effected at a temperature of 20 ° Centigrade , about normal room temperature . Under such conditions the growth of the harmless ...
... factor militating against the useful purpose of this total bacterial count test is that the incubation was effected at a temperature of 20 ° Centigrade , about normal room temperature . Under such conditions the growth of the harmless ...
Էջ 24
... factor in the number of bacteria shown than the possibility of pollution . Good wells which have been standing for some time show a very high bacterial count . The most that can be deduced is that very low counts mean certainly very ...
... factor in the number of bacteria shown than the possibility of pollution . Good wells which have been standing for some time show a very high bacterial count . The most that can be deduced is that very low counts mean certainly very ...
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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.