ISBN: 1236373278

[EAN: 9781236373274], Neubuch, [PU: RareBooksClub], W. J. LEWIS,CRYSTALLOGRAPHY, This item is printed on demand. Paperback. 182 pages. Dimensions: 9.7in. x 7.4in. x 0.4in.This historic bo… Plus…

[EAN: 9781236373274], Neubuch, [PU: RareBooksClub], W. J. LEWIS,CRYSTALLOGRAPHY, This item is printed on demand. Paperback. 182 pages. Dimensions: 9.7in. x 7.4in. x 0.4in.This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1899 Excerpt: . . . pairs of octahedral faces, and that a dyad axis is parallel to each of the edges which lie in the axial planes. It is clear also that a combination of the octahedron 111 with hhl, h I, is obtained by drawing through points on Ap, Ap, and c, equally distant from p, p, tc, lines parallel to the octahedral edges. The faces of hhl, therefore, bevel in pairs the edges of the octahedron; and in drawing the combination hhl should be drawn first. The limits of this form are given: (i) by taking the height of the trigonal pyramid above the octahedral face to be nil; when the points H, W, II, fec, coincide with A, A, A, and c. : the three faces then coalesce in a face of 111, (ii) By removing the points II, W, and c, to infinity; when 1 0. The two faces through each octahedral edge then coalesce in a plane parallel to that tetrad axis which is perpendicular to the edge: this plane is a face of the rhombic dodecahedron, 110. The angles, such as pp, pp, and c, over edges Ap, Ap, and c, are clearly all equal and will be denoted by G. Similarly, the angles over octahedral edges, such as AA, and c, are all equal, and will be denoted by D. We can obtain the inclination of p (Ihh), and c, to the axial poles A, A, fcc, from equations (2). The angle Ap can also be obtained from the A. R. Aopd; or from the geometry of Fig. 237, which gives part of a section in the plane XOS of Fig. 234. Now OHha l, Oil--OA cos 45 a J2; and Op being the normal to the face, l AOp f OdH. : . tan A Op tan OdH OHOd T-W Further, when h I, we have seen that p becomes coincident with o(lll). . . tano J2. Hence, tan Ap - tan Ao (10). The latter expression is identical with that obtained from the A. R. Aopd. Taking the equations of the normals. . . This item ships from La Vergne,TN.<

2012, ISBN: 1236373278

[EAN: 9781236373274], Neubuch, [PU: Not Avail, United States], Language: English Brand New Book ***** Print on Demand *****. This historic book may have numerous typos and missing text. P… Plus…

[EAN: 9781236373274], Neubuch, [PU: Not Avail, United States], Language: English Brand New Book ***** Print on Demand *****. This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1899 Excerpt: .pairs of octahedral faces, and that a dyad axis is parallel to each of the edges which lie in the axial planes. It is clear also that a combination of the octahedron 111 with hhl, h I, is obtained by drawing through points on Ap, A p, c, equally distant from p, p , tc, lines parallel to the octahedral edges. The faces of hhl, therefore, bevel in pairs the edges of the octahedron; and in drawing the combination hhl should be drawn first. The limits of this form are given: (i) by taking the height of the trigonal pyramid above the octahedral face to be nil; when the points H, W, II, fec, coincide with A, A , A, c.: the three faces then coalesce in a face of 111, (ii) By removing the points II, W, c, to infinity; when 1 = 0. The two faces through each octahedral edge then coalesce in a plane parallel to that tetrad axis which is perpendicular to the edge: this plane is a face of the rhombic dodecahedron, 110. The angles, such as pp , p p, c, over edges A p, Ap, c, are clearly all equal and will be denoted by G. Similarly, the angles over octahedral edges, such as AA , c, are all equal, and will be denoted by D. We can obtain the inclination of p (Ihh), c, to the axial poles A, A , fcc, from equations (2). The angle Ap can also be obtained from the A. R. Aopd; or from the geometry of Fig. 237, which gives part of a section in the plane XOS of Fig. 234. Now OH=ha + l, Oil--OA cos 45 = a + J2; and Op being the normal to the face, l AOp = f OdH.: . tan A Op = tan OdH =OH+Od =T-W Further, when h = I, we have seen that p becomes coincident with o(lll). tano= J2. Hence, tan Ap =-= tan Ao (10). The latter expression is identical with that obtained from the A. R. Aopd. Taking the equations of the normals.<

2012, ISBN: 1236373278

[EAN: 9781236373274], Neubuch, [PU: Not Avail, United States], Language: English Brand New Book ***** Print on Demand *****.This historic book may have numerous typos and missing text. Pu… Plus…

[EAN: 9781236373274], Neubuch, [PU: Not Avail, United States], Language: English Brand New Book ***** Print on Demand *****.This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1899 Excerpt: .pairs of octahedral faces, and that a dyad axis is parallel to each of the edges which lie in the axial planes. It is clear also that a combination of the octahedron 111 with hhl, h I, is obtained by drawing through points on Ap, A p, c, equally distant from p, p , tc, lines parallel to the octahedral edges. The faces of hhl, therefore, bevel in pairs the edges of the octahedron; and in drawing the combination hhl should be drawn first. The limits of this form are given: (i) by taking the height of the trigonal pyramid above the octahedral face to be nil; when the points H, W, II, fec, coincide with A, A , A, c.: the three faces then coalesce in a face of 111, (ii) By removing the points II, W, c, to infinity; when 1 = 0. The two faces through each octahedral edge then coalesce in a plane parallel to that tetrad axis which is perpendicular to the edge: this plane is a face of the rhombic dodecahedron, 110. The angles, such as pp , p p, c, over edges A p, Ap, c, are clearly all equal and will be denoted by G. Similarly, the angles over octahedral edges, such as AA , c, are all equal, and will be denoted by D. We can obtain the inclination of p (Ihh), c, to the axial poles A, A , fcc, from equations (2). The angle Ap can also be obtained from the A. R. Aopd; or from the geometry of Fig. 237, which gives part of a section in the plane XOS of Fig. 234. Now OH=ha + l, Oil--OA cos 45 = a + J2; and Op being the normal to the face, l AOp = f OdH.: . tan A Op = tan OdH =OH+Od =T-W Further, when h = I, we have seen that p becomes coincident with o(lll). tano= J2. Hence, tan Ap =-= tan Ao (10). The latter expression is identical with that obtained from the A. R. Aopd. Taking the equations of the normals.<

ISBN: 1236373278

[EAN: 9781236373274], Neubuch, [PU: Not Avail], BRAND NEW PRINT ON DEMAND., A Treatise on Crystallography, W J Lewis