The American Journal of Science, Том 204J.D. & E.S. Dana, 1922 |
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Стр. v
... Symmetry and Crystal Structure of Zinc Bromate Hexahydrate , Zn ( BrO , ) ,. 6H ̧O ; by R. W. G. WYCKOFF , ART . XIX . - On the Symmetry and Crystal Structure of Sodium Hydrogen Acetate , NaH ( C , H , O , ) ,; by R. W. G. WYCKOFF , ART ...
... Symmetry and Crystal Structure of Zinc Bromate Hexahydrate , Zn ( BrO , ) ,. 6H ̧O ; by R. W. G. WYCKOFF , ART . XIX . - On the Symmetry and Crystal Structure of Sodium Hydrogen Acetate , NaH ( C , H , O , ) ,; by R. W. G. WYCKOFF , ART ...
Стр. 175
... symmetry which is deduced by the use of X - ray methods of study is the symmetry of the arrange- ment of the atoms of which the crystal is composed . The identification of this internal symmetry with the external crystal symmetry ...
... symmetry which is deduced by the use of X - ray methods of study is the symmetry of the arrange- ment of the atoms of which the crystal is composed . The identification of this internal symmetry with the external crystal symmetry ...
Стр. 176
... symmetry requirements permit their x , y and z coördinates to have any values . Physical data concerning the mechanism of the scattering of X - rays by atoms are not yet sufficient for the complete determination of the structure of any ...
... symmetry requirements permit their x , y and z coördinates to have any values . Physical data concerning the mechanism of the scattering of X - rays by atoms are not yet sufficient for the complete determination of the structure of any ...
Стр. 177
... symmetry can likewise be made . Means of distinguishing between cubic space groups as an aid to studies of crystal ... symmetry of a crystal with- out recourse to methods of studying external symmetry , such as those of face ...
... symmetry can likewise be made . Means of distinguishing between cubic space groups as an aid to studies of crystal ... symmetry of a crystal with- out recourse to methods of studying external symmetry , such as those of face ...
Стр. 178
... symmetry , will be considered in detail . The coördinates of the most generally placed equivalent points within a unit cube for this space group are - xyz ; x + 1 , −y , z ; x , y + } , { −z ; 1 − x , y , z + 1 ; zxy ; z , x + . 1 ...
... symmetry , will be considered in detail . The coördinates of the most generally placed equivalent points within a unit cube for this space group are - xyz ; x + 1 , −y , z ; x , y + } , { −z ; 1 − x , y , z + 1 ; zxy ; z , x + . 1 ...
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ammonium chloride appears aragonite atoms bands barium basalt Bayer's beds biotite bowlders brachiopods calcite canine cent chemical chloride clays colloidal color composition compound cone cone-in-cone Cope crystalline crystals deposits described determined Devonian diameter Dinictis Eocene evidence fanglomerates fault plane fauna feet feldspar formation fossils gabbro genus Geological Glass gneiss granite graptolites Holotype Hyrachyus igneous indices John Day JOUR lake Laue photographs layer length leucite limestone liquid lower Marsh mass material measurements melting method miles minerals Miocene mixture molar Nimravus Nimravus debilis occur orthoclase oxide Payette platycopis Pogonodon Pogonodon davisi posterior premolars present probably quartz lode quartzite Reagan refraction region ridge rocks salt sandstone SCI.-FIFTH SERIES sediments serrulidens shales silicates skull solution space groups sparagmite species specimen stibnite strontium structure surface symmetry temperature thickness tion Triassic trilobites U. S. Geol upper zone