Proceedings of the American Academy of Arts and Sciences, 17±ÇAmerican Academy of Arts and Sciences., 1882 |
µµ¼ º»¹®¿¡¼
47°³ÀÇ °á°ú Áß 1 - 5°³
24 ÆäÀÌÁö
... formula is the expansion of glass ; but if the bulbs are made of flint glass ( lead glass ) tubing , such as is used in this neighborhood for ornamental ware , the mean coefficient of ex- pansion will vary very little from 0.000025 , if ...
... formula is the expansion of glass ; but if the bulbs are made of flint glass ( lead glass ) tubing , such as is used in this neighborhood for ornamental ware , the mean coefficient of ex- pansion will vary very little from 0.000025 , if ...
25 ÆäÀÌÁö
... formula , by which he calculated a table of maximum tensions for every ten de- grees between the extreme limits , and also plotted a corresponding curve . It so happens , however , that the only two observations within the range of ...
... formula , by which he calculated a table of maximum tensions for every ten de- grees between the extreme limits , and also plotted a corresponding curve . It so happens , however , that the only two observations within the range of ...
28 ÆäÀÌÁö
... formula , it is now easy to compute the values for each divi- sion of our arbitrary scale . We cannot , however , depend absolutely on the result , as there are several causes which will differ with each instrument , and of which we can ...
... formula , it is now easy to compute the values for each divi- sion of our arbitrary scale . We cannot , however , depend absolutely on the result , as there are several causes which will differ with each instrument , and of which we can ...
30 ÆäÀÌÁö
... formula and process for making an acid of this strength are as follows : - Take of Potassium Bromide . Sulphuric Acid , Sp . Gr . at 15 ¡Æ .6 C. 1.838 , at 25 ¡Æ C. 1.828 Water • Six parts . Seven parts . • Nine parts . " Add to the ...
... formula and process for making an acid of this strength are as follows : - Take of Potassium Bromide . Sulphuric Acid , Sp . Gr . at 15 ¡Æ .6 C. 1.838 , at 25 ¡Æ C. 1.828 Water • Six parts . Seven parts . • Nine parts . " Add to the ...
40 ÆäÀÌÁö
... formula which are deduced from his hypothesis . Suppose we have a circuit of two metals . Let the heat absorbed by the Thomson effect in passing from a point at temperature @ to a point at temperature + de in one metal be ¥òde per unit ...
... formula which are deduced from his hypothesis . Suppose we have a circuit of two metals . Let the heat absorbed by the Thomson effect in passing from a point at temperature @ to a point at temperature + de in one metal be ¥òde per unit ...
±âŸ ÃâÆǺ» - ¸ðµÎ º¸±â
ÀÚÁÖ ³ª¿À´Â ´Ü¾î ¹× ±¸¹®
acuminate acute air-dried salt analyses antimony baric base beam belong Benth boiling Boston bracteis bracts bromide Calculated calyx Cambridge carbonate carpels caudal caudal fin chromatophores Coahuila colors corolla crystals curcumin Deflection dibromacrylic acid dorsal and anal dried embryonic ether Fishes flowers foliis formula fruit glabrous grammes Gray Guanajuato Guanajuato Dugès H©üO H©üSO heat Hemsl herbarium Hort hydrobromic acid inches long insects involucre lanceolate leaflets leaves length less lines long Linn©¡an lobes molybdic Monclova Monterey nearly Nuevo Leon Nutt oblong obtained obtuse ovate oxide P©üO Parry & Palmer pectorals pedicels peduncles petals plant potassic precipitate pubescent racemes rays Saltillo San Luis Potosi San Miguelito San Miguelito Mountains Schaffner sepals sessile Sierra Madre slender soluble solution south of Saltillo species specimens stage Plate stems substance gave Sutherland Springs temperature Texas thermometer Torr tube ventrals Willd yellow young
Àαâ Àο뱸
413 ÆäÀÌÁö - Lavergne, undertaken by desire of the Academy of Moral and Political Sciences of the Institute of France...
441 ÆäÀÌÁö - It can now be asserted upon convincing evidence that savagery preceded barbarism in all the tribes of mankind, as barbarism is known to have preceded civilization.
461 ÆäÀÌÁö - I was surprised by finding how large a number of insects were caught by the leaves of the •common sun-dew (Drosera rotundifolia) on a heath in Sussex.
460 ÆäÀÌÁö - Insects" appeared in 1862, thus forming the second volume of the whole series; and the two volumes "On the Effects of Cross- and Self-Fertilization in the Vegetable Kingdom," and "The Different Forms of Flowers on Plants of the same Species...
259 ÆäÀÌÁö - Acad. XVI. 364). Very perfect definition would not be required, since it would affect all the stars equally. To an amateur who would regard the complexity of an instrument as a serious objection to it, a means is now afforded of easily reducing his estimates of magnitude to an absolute system, and thus rendering them of real value.
466 ÆäÀÌÁö - The proof of this great generalization, like that of all other generalizations, lies mainly in the fact that the evidence in its favor is continually augmenting, while that against it is continually diminishing, as the progress of science reveals to us more and more of the workings of the universe.
30 ÆäÀÌÁö - Add to the sulphuric acid one part of the water and cool the mixture. Then dissolve the potassium bromide in six parts of the water by means of heat, supplying the loss of water by evaporation during the heating. Pour the diluted sulphuric acid slowly into the hot solution with constant stirring, and set the mixture aside for twenty-four hours, that the sulphate of potassium may crystallize.
51 ÆäÀÌÁö - IT and iri denote the heat — measured in dynamical equivalents — absorbed and evolved at the hot and cold junctions respectively in unit time by unit current. Let E be the electromotive force of a battery, maintaining a current / in such a direction as to cause absorption of heat at the hot junction. Then if R be the whole resistance of the circuit, we have by Joule's law and the first law of thermodynamics : — £!+*!— ^!=11!*. (1) Supposing the whole energy of the current wasted in heat....
263 ÆäÀÌÁö - There cannot be more than four layers in the wings and scales, which show principally such colors in insects, two external ones belonging to the cuticula, and two internal ones belonging to the hypodermis. The naked wings of Diptera and Neuroptera often show beautiful interference colors. The scales of Entimus and other Curculionidae are well known for their brilliancy, and it is interesting to remark that when dry scales are examined with the microscope, many are found partly injured, which give...
187 ÆäÀÌÁö - ... and comparatively stable characters to the species as we find them in their native haunts. I am not very confident of the success of my prolonged endeavors to put these genera into proper order and to fix the nomenclature of the older species; and in certain groups absolute or practical definition of the species by written characters or descriptions is beyond my powers.