Annual Report of the Board of Regents of the Smithsonian Institution |
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Página 370
... negative discharge of the small ball 8 than with a positive ; for in the latter case
much of the electricity passed off as brush discharge through the air from the
connecting wire ; but in the former case it all seemed to go through the
muriaticacid .
... negative discharge of the small ball 8 than with a positive ; for in the latter case
much of the electricity passed off as brush discharge through the air from the
connecting wire ; but in the former case it all seemed to go through the
muriaticacid .
Página 375
Carbonic acid produces a very poor brush at common pressures . “ In rarefied
carbonic acid the brush is better in form , but weak as to light , being of a dull
greenish or purplish hue . ” “ Muriatic acid gas . It is very difficult to obtain the
brush in ...
Carbonic acid produces a very poor brush at common pressures . “ In rarefied
carbonic acid the brush is better in form , but weak as to light , being of a dull
greenish or purplish hue . ” “ Muriatic acid gas . It is very difficult to obtain the
brush in ...
Página 376
proa brush formed on it , extending to the negative ball ; and when still nearer ,
the brush ceased and bright sparks ... As we have already seen , $ 80 , the spark
discharge passes into the brush at far less distances if the surface on which the ...
proa brush formed on it , extending to the negative ball ; and when still nearer ,
the brush ceased and bright sparks ... As we have already seen , $ 80 , the spark
discharge passes into the brush at far less distances if the surface on which the ...
Página 377
Rounded ends , which give only brushes when the machine is in weak action ,
give the glow readily when the machine is in good order . 3d . Rarefaction of the
air . - A brass ball 24 inches in diameter being made positively inductive in an air
...
Rounded ends , which give only brushes when the machine is in weak action ,
give the glow readily when the machine is in good order . 3d . Rarefaction of the
air . - A brass ball 24 inches in diameter being made positively inductive in an air
...
Página 378
Similar phenomena were obtained with balls instead of the rounded ends of rods
. § 88. Convective discharge.— The dielectric being penetrated by the spark , the
brush , and also by the glow , Faraday calls this form of discharge the disruptive ...
Similar phenomena were obtained with balls instead of the rounded ends of rods
. § 88. Convective discharge.— The dielectric being penetrated by the spark , the
brush , and also by the glow , Faraday calls this form of discharge the disruptive ...
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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 |