Annual Report of the Board of Regents of the Smithsonian Institution |
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Página 127
... but little disturbed by igneous agency , but by far the larger portion of the coal
strata of this immense field was carried away by denuding agencies . You will
observe , then , the striking difference in mode of occurrence between metallic
ores ...
... but little disturbed by igneous agency , but by far the larger portion of the coal
strata of this immense field was carried away by denuding agencies . You will
observe , then , the striking difference in mode of occurrence between metallic
ores ...
Página 128
I have said that while metallic veins extend indefinitely downwards , coal scams
for the most part are extended horizontally , or nearly so . Sometimes , however ,
coal seams may appear , like metallic veins , to extend downwards . This is the ...
I have said that while metallic veins extend indefinitely downwards , coal scams
for the most part are extended horizontally , or nearly so . Sometimes , however ,
coal seams may appear , like metallic veins , to extend downwards . This is the ...
Página 333
When a battery is disa charged by a long metallic wire the current in the
conducting circuit wire induces a current in an adjoining closed wire conductor .
The wire which forms the conducting circuit of the battery is known as the main
wire .
When a battery is disa charged by a long metallic wire the current in the
conducting circuit wire induces a current in an adjoining closed wire conductor .
The wire which forms the conducting circuit of the battery is known as the main
wire .
Página 335
The wire being fastened by the super position of a hot metallic plate , the spaces
between the rings of wire will be filled up with the pitch ; a heavy heated plate laid
on the disk will make the spiral perfectly level . This spiral is now blacked with ...
The wire being fastened by the super position of a hot metallic plate , the spaces
between the rings of wire will be filled up with the pitch ; a heavy heated plate laid
on the disk will make the spiral perfectly level . This spiral is now blacked with ...
Página 341
0.034 Comparing the last three indications with the corresponding thicknesses of
the interposed sheets of tin foil , we find that the strength of the current in the
secondary wire is inversely proportional to the thickness of the interposed
metallic ...
0.034 Comparing the last three indications with the corresponding thicknesses of
the interposed sheets of tin foil , we find that the strength of the current in the
secondary wire is inversely proportional to the thickness of the interposed
metallic ...
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Pasajes populares
Página 9 - The emphasis upon publications as a means of diffusing knowledge was expressed by the first Secretary of the Smithsonian Institution. In his formal plan for the Institution, Joseph Henry articulated a program that included the following statement: "It is proposed to publish a series of reports, giving an account of the new discoveries in science, and of the changes made from year to year in all branches of knowledge not strictly professional.
Página 7 - I mean stock to remain in this country, to the United States of America, to found at Washington, under the name of the Smithsonian Institution, an establishment for the increase and diffusion of knowledge among men.
Página 12 - January, 1847, requiring an equal division of the income between the active operations and the museum and library, when the buildings are completed, be and it is hereby repealed.
Página 8 - It is proposed — 1. To stimulate men of talent to make original researches, by offering suitable rewards for memoirs containing new truths; and, 2. To appropriate annually a portion of the income for particular researches, under the direction of suitable persons. To DIFFUSE KNOWLEDGE. It is proposed — 1. To publish a series of periodical reports on the progress of the different branches of knowledge; and, 2 To publish occasionally separate treatises on subjects of general interest.
Página 12 - Art-Union and other similar societies. 12. A small appropriation should annually be made for models of antiquities, such as those of the remains of ancient temples, &c. 13. For the present, or until the building is fully completed, besides the Secretary, no permanent assistant will be required, except one, to act as librarian. 14. The Secretary, by the law of Congress, is alone responsible to the Regents.
Página 10 - ... Agriculture. 4. Application of science to arts. II. MORAL AND POLITICAL CLASS. 5. .Ethnology, including particular history, comparative philology, antiquities, &c. 6. Statistics and political economy. 7. Mental and moral philosophy. 8. A survey of the political events of the world, penal reform, &c. HI. LITERATURE AND THE FINE ARTS. 9. Modern literature. 10. The fine arts, and their application to the useful arts. 11. Bibliography. 12. Obituary notices of distinguished individuals.
Página 26 - We are indebted to the National Telegraph Line for a series of observations from New Orleans to New York and as far westward as Cincinnati, which have been published in the Evening Star of this city.
Página 11 - To carry out the plan before described, a library will be required, consisting, 1st, of a complete collection of the transactions and proceedings of all the learned societies in the world ; 2d, of the more important current periodical publications, and other works necessary in preparing the periodical reports.
Página 8 - ... be considered, but also the continual expense of keeping it in repair, and of the support of the establishment necessarily connected with it. There should also be but few individuals permanently supported by the Institution. 12. The plan and dimensions of the building should be determined by the plan of organization, and not the converse. 13. It should be recollected that mankind in general are to be benefited by the bequest, and that, therefore, all unnecessary expenditure on local objects would...
Página 96 - In this room, and extending around the same, was a circuit of wire stretched along the wall, and at one termination of this, in the recess of a window, a bell was fixed, while the other extremity was connected with a galvanic apparatus. You showed us the manner in which the bell could be made to ring by a current of electricity, transmitted through this wire, and you remarked that this method might be adopted for giving signals, by the ringing of a bell at the distance of many miles from the point...
Información bibliográfica
| Título | Annual Report of the Board of Regents of the Smithsonian Institution Mis. doc. Publication (Smithsonian Institution) |
| Autor | Smithsonian Institution. Board of Regents |
| Editor | The Institution, 1858 |
| Procedencia del original | Universidad de Harvard |
| Digitalizado | 27 Mar 2007 |
| Exportar cita | BiBTeX EndNote RefMan |