Proceedings of the American Academy of Arts and Sciences, Том 48Metcalf and Company, 1913 Vol. 12 (from May 1876 to May 1877) includes: Researches in telephony / by A. Graham Bell. |
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... curve of water . eliminated nearly all the infra red was kept in front of the thermopile window . This cell , Figure 2 , was of glass , ground flat and exactly 1 cm . thick , 44 mm . external diameter and 35 mm . internal diameter . The ...
... curve of water . eliminated nearly all the infra red was kept in front of the thermopile window . This cell , Figure 2 , was of glass , ground flat and exactly 1 cm . thick , 44 mm . external diameter and 35 mm . internal diameter . The ...
Страница 20
... curve at once gave the c . p . of I , so that the illumination could be computed . The mirror at A was an electrolytic nickel surface highly polished , inasmuch as nickel gives a considerably higher coefficient of reflection near the ...
... curve at once gave the c . p . of I , so that the illumination could be computed . The mirror at A was an electrolytic nickel surface highly polished , inasmuch as nickel gives a considerably higher coefficient of reflection near the ...
Страница 25
... curve for vision , is produced at enormous efficiency , according to Buisson and Fabry 17 not less than 55 candles per watt for the green line at wave length 546 which supplies nearly two thirds " Comptes Rendus , Vol . 153 , p . 254 ...
... curve for vision , is produced at enormous efficiency , according to Buisson and Fabry 17 not less than 55 candles per watt for the green line at wave length 546 which supplies nearly two thirds " Comptes Rendus , Vol . 153 , p . 254 ...
Страница 27
... Curves of Sun and sky energy . light undoubtedly contains only a very modest proportion of ultra per foot candle of ... curve 19 The Illuminating Engineer , Lond . , Vol . II , p . 205 . The Illuminating Engineer , Lond . , Vol . I , p ...
... Curves of Sun and sky energy . light undoubtedly contains only a very modest proportion of ultra per foot candle of ... curve 19 The Illuminating Engineer , Lond . , Vol . II , p . 205 . The Illuminating Engineer , Lond . , Vol . I , p ...
Страница 28
... curve is in the far violet near the edge of the ultra violet . Curve C is the summation of A and B and it will be seen at once that the proportion of ultra violet is some- thing like three times as great as in the case of the direct ...
... curve is in the far violet near the edge of the ultra violet . Curve C is the summation of A and B and it will be seen at once that the proportion of ultra violet is some- thing like three times as great as in the case of the direct ...
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Страница 109 - Discount to booksellers 25% ; to members 50%, or for whole sets 60%. The individual articles may be obtained separately. A price list of recent • articles is printed on the inside pages of the cover of the Proceedings. Complete Works of Count Rumford. 4 vols., $5.00 each. Memoir of Sir Benjamin Thompson, Count Rumford, with Notices of his Daughter.
Страница 773 - Statuary and casts of sculpture for use as models or for art educational purposes only; regalia and gems, where specially imported in good faith for the use and by order of any society incorporated or established solely for religious, philosophical, educational, scientific, or literary purposes, or for the encouragement of the fine arts, or for the use and by order of any college, academy, school, seminary of learning, orphan asylum, or public hospital in the United States, or any State or public...
Страница 42 - THE wisest man could ask no more of Fate Than to be simple, modest, manly, true, Safe from the Many, honored by the Few ; To count as naught in World, or Church, or State, But inwardly in secret to be great...
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Страница 29 - CEA — (I.) Experiments on the Effect of Freezing and other low Temperatures upon the Viability of the Bacillus of Typhoid Fever, with Considerations regarding Ice as a Vehicle of Infectious Disease. (II.) Statistical Studies on the Seasonal Prevalence of Typhoid Fever in various Countries and its Relation to Seasonal Temperature, pp.
Страница 33 - If we can say that we now know the physical and biological conditions of the great ocean basins in their broad general outlines — and I believe we can do so — the present state of our knowledge is due to the combined work and observations of a great many men belonging to many nationalities, but most probably more to the work and inspiration of Alexander Agassiz than to any other single man.
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Страница 696 - ... cum semel institerunt vestigia certa viai, sic alid ex alio per te tute ipse videre talibus in rebus poteris caecasque latebras insinuare omnis et verum protrahere inde. quod si pigraris paulumve recesseris ab re, 410 hoc tibi de plano possum promittere, Memmi : usque adeo largos haustus e fontibu...