Proceedings of the American Academy of Arts and Sciences, Volumen7Metcalf and Company, 1868 Vol. 12 (from May 1876 to May 1877) includes: Researches in telephony / by A. Graham Bell. |
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Página 49
American Academy of Arts and Sciences. the internal compressed portion to attain its normal condition before this internal portion ( which is the first to break in the common gun ) is subject to any strain at all . It will be perceived ...
American Academy of Arts and Sciences. the internal compressed portion to attain its normal condition before this internal portion ( which is the first to break in the common gun ) is subject to any strain at all . It will be perceived ...
Página 50
... conditions of the problem and the resources of physical science , so fairly and completely won . - Upon these two inventions has been set the seal of experience . But there is still another memoir , read by Professor Treadwell before ...
... conditions of the problem and the resources of physical science , so fairly and completely won . - Upon these two inventions has been set the seal of experience . But there is still another memoir , read by Professor Treadwell before ...
Página 58
... condition of the instrument itself ; and as these were known to be very great , it was possible that they might account for all the variations observed . With the improved instrument , however , just referred to , absolute constancy of ...
... condition of the instrument itself ; and as these were known to be very great , it was possible that they might account for all the variations observed . With the improved instrument , however , just referred to , absolute constancy of ...
Página 59
... conditions . As no accurate means of making the comparison are yet known , I was obliged to depend upon my eye alone , and small differences at different times of observation may easily have escaped my notice . Indeed , I should have ...
... conditions . As no accurate means of making the comparison are yet known , I was obliged to depend upon my eye alone , and small differences at different times of observation may easily have escaped my notice . Indeed , I should have ...
Página 61
... conditions at different heights would give data for determining the law according to which the amount of vapor decreases with the elevation above the sea level . € 1 All the aqueous lines change in intensity like the line 8. They are ...
... conditions at different heights would give data for determining the law according to which the amount of vapor decreases with the elevation above the sea level . € 1 All the aqueous lines change in intensity like the line 8. They are ...
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Página 47 - ... cylinders, welded together endwise. Each ring was made of bars wound upon an arbor spirally, like winding a ribbon upon a block, and, being welded and shaped in dies, were joined endwise, when in the furnace and at a welding heat, and afterwards pressed together in a mould, by a hydrostatic press of 1,000 tons force.