The Encyclopedia Americana: A Library of Universal Knowledge, Količina 8Americana corporation, 1931 |
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Zadetki 1–3 od 58
Stran 268
... face in terms of a , b and c were rational , such as 2a : b : 3c or a : 3b : 2c . Symmetry , or the repetition of equal angles or similarly grouped faces , was made a crystal character by de l'Isle in his statement , " Every face has an ...
... face in terms of a , b and c were rational , such as 2a : b : 3c or a : 3b : 2c . Symmetry , or the repetition of equal angles or similarly grouped faces , was made a crystal character by de l'Isle in his statement , " Every face has an ...
Stran 273
... face and represent any face parallel to it , that is , any face in the same angular position The relative inter- cepts for any face are simple numbers only in the case of isometric crystals but , as stated previously , there is a simple ...
... face and represent any face parallel to it , that is , any face in the same angular position The relative inter- cepts for any face are simple numbers only in the case of isometric crystals but , as stated previously , there is a simple ...
Stran 276
... faces of flattened pyramids nearly coincident with the true face . Occasionally the faces are curved from strain or partial resolution or the union of many smaller crystals and lack of homogeneity may be indicated by various phe- nomena ...
... faces of flattened pyramids nearly coincident with the true face . Occasionally the faces are curved from strain or partial resolution or the union of many smaller crystals and lack of homogeneity may be indicated by various phe- nomena ...
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