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Pagina 19
( 1-22 ) = { 7,3 } I 11 cos , 2n9 + + 2 * 03 # Let o = 0 , or , let the extremity of one of the R lie in the principal vertex , If n be even R ...... R = a " . ( 1-22 ) ( sin . a ) " · { 7,4 } . ( 1-2 ) 2 ( sin . - 2 ) 2 If odd , R ..
( 1-22 ) = { 7,3 } I 11 cos , 2n9 + + 2 * 03 # Let o = 0 , or , let the extremity of one of the R lie in the principal vertex , If n be even R ...... R = a " . ( 1-22 ) ( sin . a ) " · { 7,4 } . ( 1-2 ) 2 ( sin . - 2 ) 2 If odd , R ..
Pagina 52
so that a regular tetrahedron may be detached ( , from each extremity , while the remaining portion assumes the form of a regular octohedron ; and , since every rhomboid , that can be obtained , must admit of the same division into one ...
so that a regular tetrahedron may be detached ( , from each extremity , while the remaining portion assumes the form of a regular octohedron ; and , since every rhomboid , that can be obtained , must admit of the same division into one ...
Pagina 55
10 and 11 , in the same form , then a complete tetrahedral group may be removed from each extremity , leaving a central octohedron , as may be seen in fig . '11 , which corresponds to fig . 8 . The passage of Dr. Hooke , from which I ...
10 and 11 , in the same form , then a complete tetrahedral group may be removed from each extremity , leaving a central octohedron , as may be seen in fig . '11 , which corresponds to fig . 8 . The passage of Dr. Hooke , from which I ...
Pagina 61
... a possible origin of its four pair of poles may be traced in the structure here represented ; for it will be seen that a white ball and a black one are regularly opposed to each other at the extremities of each axis of the cube .
... a possible origin of its four pair of poles may be traced in the structure here represented ; for it will be seen that a white ball and a black one are regularly opposed to each other at the extremities of each axis of the cube .
Pagina 73
Let a glass tube be taken , having its internal diameter about of an inch , with a ball at each extremity of about one inch diameter ; and let the tube be bent to a right angle at the distance of half an inch from each ball .
Let a glass tube be taken , having its internal diameter about of an inch , with a ball at each extremity of about one inch diameter ; and let the tube be bent to a right angle at the distance of half an inch from each ball .
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Philosophical Transactions of the Royal Society of London Royal Society (Great Britain) Volledige weergave - 1835 |
Philosophical Transactions of the Royal Society of London Royal Society (Great Britain) Volledige weergave - 1836 |
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