Annual Report of the Board of Regents of the Smithsonian InstitutionThe Institution, 1889 |
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Сторінка 131
Smithsonian Institution. Board of Regents. Langley's observations of hitherto unrecognized wave - lengths . - Profes- sor Langley having traced the solar spectrum in the infra - red as far as wave - length = 0.0027 of a millimeter ...
Smithsonian Institution. Board of Regents. Langley's observations of hitherto unrecognized wave - lengths . - Profes- sor Langley having traced the solar spectrum in the infra - red as far as wave - length = 0.0027 of a millimeter ...
Сторінка 359
... lengths greater than 0.005mm , and have grounds for estimating that we have recognized radiations whose wave length exceeds 0.03mm , so that while we have directly measured to nearly eight times the wave length known to Newton , we have ...
... lengths greater than 0.005mm , and have grounds for estimating that we have recognized radiations whose wave length exceeds 0.03mm , so that while we have directly measured to nearly eight times the wave length known to Newton , we have ...
Сторінка 368
... length of the line D2 by an ingenious and novel method , which consists in de- termining optically , by means of Talbot's bands , the dimensions of a quartz cube as a function of this wave length , and thence its volume in terms of this ...
... length of the line D2 by an ingenious and novel method , which consists in de- termining optically , by means of Talbot's bands , the dimensions of a quartz cube as a function of this wave length , and thence its volume in terms of this ...
Зміст
Scientific Writings of Joseph Henry | 9 |
APPENDIX TO THE SECRETARYS REPORT | 29 |
Shipments received from abroad | 38 |
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