Proceedings of the American Academy of Arts and Sciences, Volumen3Vol. 12 (from May 1876 to May 1877) includes: Researches in telephony / by A. Graham Bell. |
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Página 22
The ordinary formula for the area of a prismoid is į h ( B + 6 + 4 M ) , where B and
b represent the areas of the upper and lower bases respectively , M the middle
section , and h the height . The application of this formula for the mensuration of ...
The ordinary formula for the area of a prismoid is į h ( B + 6 + 4 M ) , where B and
b represent the areas of the upper and lower bases respectively , M the middle
section , and h the height . The application of this formula for the mensuration of ...
Página 66
... they are quite small in front , gradually becoming larger , and then again
smaller ; the anterior teeth are trilobed ; the lobes gradually diminish backwards ,
become flat , and then rounded on their upper surface ; there is a ridge on the
median ...
... they are quite small in front , gradually becoming larger , and then again
smaller ; the anterior teeth are trilobed ; the lobes gradually diminish backwards ,
become flat , and then rounded on their upper surface ; there is a ridge on the
median ...
Página 71
... for the covering - plate . Through this passes the tube of the washing - bottle ( f ,
Fig . 2 ) . The washing - bottle is made in the ordinary way , except that it is fitted
with a cork , which projects about an inch above the neck . The upper end of the.
... for the covering - plate . Through this passes the tube of the washing - bottle ( f ,
Fig . 2 ) . The washing - bottle is made in the ordinary way , except that it is fitted
with a cork , which projects about an inch above the neck . The upper end of the.
Página 72
The upper end of the cork fits the neck of a glass plate ground on the under side ,
made as is represented at e , Fig . 2 . This plate is about three inches in diameter
, and when resting upon the plate d , as is represented in Fig . 1 , covers the ...
The upper end of the cork fits the neck of a glass plate ground on the under side ,
made as is represented at e , Fig . 2 . This plate is about three inches in diameter
, and when resting upon the plate d , as is represented in Fig . 1 , covers the ...
Página 82
He said that until lately he had been accustomed to refer this phenomenon to
reflection from the surfaces of the two eyelids , the lower surface reflecting the
incident rays upwards through the eye , the upper surface in the opposite
direction .
He said that until lately he had been accustomed to refer this phenomenon to
reflection from the surfaces of the two eyelids , the lower surface reflecting the
incident rays upwards through the eye , the upper surface in the opposite
direction .
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