Annual Report of the Board of Regents of the Smithsonian InstitutionSmithsonian Institution, 1856 |
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Página 176
... negative term , implying that matter is unable to change its condition as to motion and rest . body is at rest , it will never move , unless a force acts upon it ; if it is in motion , it will forever move in the same straight line ...
... negative term , implying that matter is unable to change its condition as to motion and rest . body is at rest , it will never move , unless a force acts upon it ; if it is in motion , it will forever move in the same straight line ...
Página 241
... negative quantities will be all individually marked with the sign minus , ( — , ) whether they follow each other or are isolated . In the first column , entitled daily mean , will be inscribed the mean of the three observa- tions of the ...
... negative quantities will be all individually marked with the sign minus , ( — , ) whether they follow each other or are isolated . In the first column , entitled daily mean , will be inscribed the mean of the three observa- tions of the ...
Página 312
... negative electricity . He therefore con- cluded that the electricity was due to the contact of the two metals , and that the acid of the circuit only performed the office of a con- ductor . This view was at first generally adopted , but ...
... negative electricity . He therefore con- cluded that the electricity was due to the contact of the two metals , and that the acid of the circuit only performed the office of a con- ductor . This view was at first generally adopted , but ...
Página 315
... negative polarity , and the side towards the water positive polarity . By placing in this polarized water a good conductor or a substance easily electrified , which is indifferent towards the oxygen of the water , such as platinum , the ...
... negative polarity , and the side towards the water positive polarity . By placing in this polarized water a good conductor or a substance easily electrified , which is indifferent towards the oxygen of the water , such as platinum , the ...
Página 316
... negative oxygen particle of a molecule of water in contact with the zinc . Likewise the electro - negative state of a particle of platinum is in equilibrium with the positive state of the oxygen particle of the water molecule with which ...
... negative oxygen particle of a molecule of water in contact with the zinc . Likewise the electro - negative state of a particle of platinum is in equilibrium with the positive state of the oxygen particle of the water molecule with which ...
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Términos y frases comunes
Algć appear atmosphere axis barometer battery become Becquerel body chemical chemical decomposition circuit closing arc coils combination copper wire cubic centimetres cylinder decomposing cell deflection determined diameter dilute sulphuric acid direction earth electrical electro-motive force electrodes element equal experiments feet galvanic polarization galvanometer Grove's heat hence hydrogen hyper-oxide immersed inches inserted instrument iron wire length lightning liquid magnetic means measure mercury metals meteoric meteorites metres millimetres Mount Mitchell mountain multiplier needle negative nitric acid observations obtained Ohm's law oxide oxygen particles pass passive plants platinum plate platinum wire Poggendorff pole positive produced quantity rain rheometer rheostat ring Schönbein Schreibersite Smithsonian Institution solution of sulphate species specimens strength of current sulphate of copper sulphuric acid surface tangent compass temperature thermometer thick thunder tion tube unit vegetable voltaic voltameter wind zinc zinc and carbon zinc and copper
Pasajes populares
Página 305 - Nor motion of swift thought, less could his shield, Such ruin intercept : ten paces huge He back recoiled ; the tenth on bended knee His massy spear upstayed ; as if on earth Winds under ground, or waters forcing way Sidelong, had pushed a mountain from his seat, Half sunk with all his pines.
Página 9 - ... 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 9 - ... counsellors of the Institution. 2. Appropriations in different years to different objects ; so that in course of time each branch of knowledge may receive a share. 3. The results obtained from these appropriations to be published, with the memoirs before mentioned, in the volumes of the Smithsonian Contributions to Knowledge. 4. Examples of objects for which appropriations may be made : (1.) System of extended meteorological observations for solving the problem of American storms.
Página 9 - ... of literary and scientific societies, and copies to be given to all the colleges, and principal libraries, in this country. One part of the remaining copies may be offered for sale ; and the other carefully preserved, to form complete sets of the work, to supply the demand from new institutions.
Página 84 - And the said regents shall make, from the interest of said fund, an appropriation, not exceeding an average of twenty-five thousand dollars annually, for the gradual formation of a library, composed of valuable works pertaining to all departments of human knowledge.
Página 8 - To INCREASE KNOWLEDGE. 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...
Página 7 - Institution is not a national establishment, as is frequently supposed, but the establishment of an individual, and is to bear and perpetuate his name. 4. The objects of the Institution are, 1st, to increase, and, 2d, to diffuse knowledge among men. 5. These two objects should not be confounded with one another. The first is to enlarge the existing stock of knowledge by the addition of new truths ; and the second, to disseminate knowledge, thus increased, among men. 6. The will makes no restriction...
Página 155 - Couch also states, that the intelligent, but almost unknown, Dr. Berlandier, writes in his journal of the Commission of Limits, that at the hacienda of Venagas, there was (1827) a piece of iron that would make a cylinder one yard in length, with a diameter of ten inches. It was said to have been brought from the mountains near the hacienda. It presented no crystalline structure, and was quite ductile.
Página 11 - With reference to the collection of books, other than those mentioned above, catalogues of all the different libraries in the United States...
Página 232 - The observation of the vane requires more care than is usually given. In winds of considerable strength the vane is never at rest, or fixed in the same direction; it oscillates incessantly, and its oscillations increase in extent with certain winds and with the violence of the wind. In such cases observers must note the mean direction 'between the extremes. When the wind is too light to move the vane, and when it is calm, no direction will be...