Smithsonian Contributions to Knowledge, Volumen29Smithsonian Institution, 1903 |
Dentro del libro
Resultados 1-5 de 78
Página 10
... appears that if the visibility is to be estimated by observa- tions with a telescope of 12 mm . aperture ( or with a circular aperture about one fourth greater ) , an error in the adjustment of the surfaces of a second of are would ...
... appears that if the visibility is to be estimated by observa- tions with a telescope of 12 mm . aperture ( or with a circular aperture about one fourth greater ) , an error in the adjustment of the surfaces of a second of are would ...
Página 20
... appears that in the case of hydrogen - and probably in all other cases the width of the spectral lines diminishes toward a limit as the pressure diminishes , which depends upon the substance and its tempera- ture ; and that the excess ...
... appears that in the case of hydrogen - and probably in all other cases the width of the spectral lines diminishes toward a limit as the pressure diminishes , which depends upon the substance and its tempera- ture ; and that the excess ...
Página 21
... appears from these curves that the width of the line is about ten times as great as when the vacuum- tube is used . But if the temperature of the flame be taken at 1500 ° C. , and that in the vacuum - tubes at 350 ° C. , the lines ...
... appears from these curves that the width of the line is about ten times as great as when the vacuum- tube is used . But if the temperature of the flame be taken at 1500 ° C. , and that in the vacuum - tubes at 350 ° C. , the lines ...
Página 23
... appear from the curves of cadmium that there are three lines which may be used for this purpose . The red cadmium line is almost ideally homogeneous , and will readily permit the estimation of a change of phase in the interference ...
... appear from the curves of cadmium that there are three lines which may be used for this purpose . The red cadmium line is almost ideally homogeneous , and will readily permit the estimation of a change of phase in the interference ...
Página 44
... appear too heavy . These currents , there- fore , make the globe appear too heavy in both positions . As a matter of observation , the convection currents produced within the desiccator are so much the more important that the effect ...
... appear too heavy . These currents , there- fore , make the globe appear too heavy in both positions . As a matter of observation , the convection currents produced within the desiccator are so much the more important that the effect ...
Contenido
1 | |
43 | |
1 | |
2 | |
3 | |
4 | |
6 | |
7 | |
78 | |
79 | |
80 | |
29 | |
46 | |
64 | |
73 | |
79 | |
9 | |
10 | |
11 | |
12 | |
13 | |
14 | |
15 | |
22 | |
28 | |
30 | |
31 | |
33 | |
35 | |
36 | |
51 | |
52 | |
53 | |
54 | |
56 | |
59 | |
61 | |
62 | |
63 | |
64 | |
65 | |
67 | |
69 | |
71 | |
72 | |
73 | |
74 | |
75 | |
77 | |
12 | |
24 | |
25 | |
26 | |
27 | |
28 | |
29 | |
22 | |
1 | |
10 | |
11 | |
25 | |
16 | |
30 | |
31 | |
32 | |
33 | |
35 | |
36 | |
37 | |
43 | |
44 | |
46 | |
ii | |
1 | |
7 | |
13 | |
118 | |
124 | |
126 | |
171 | |
Términos y frases comunes
absorbed absorption actinic amount animals apparatus argon atomic weight balance barometer bell jars Blue bolometer breath Brown-Séquard and d'Arsonval capacity carbonic acid cent chemical chlorine closed by fusion CO₂ color tube computed condenser constant correction counterpoise cubic centimetres cylinder density of oxygen desiccator diameter drying tube dust effect error eudiometer exhausted expired air figure filled flask fluid fusible metal gas-holder gases globe grammes heat hydrogen hydrostatic weighing increase injected ionized leakage liquid litres aspirated litres per hour magnesium manometer means measured mercury method millimetre mixture moisture nitrogen nuclei observations organic matter oxalic acid oxide oxidizable oxygen palladium passed pentoxide phosphorus phosphorus pentoxide placed pressure produced proportion quantity rabbits ratio reduced scale series of experiments shown in Fig Smithsonian solution stopcock sulphuric acid temperature thermometer tion tube containing vacuum vapor vessels voltameter volume ΙΟ