 | Charles Davies, William Guy Peck - Electronic book - 1855 - 592 pages
...equal to the area of the lune multiplied by one-third of the radius of the sphere. 34 SPHERICAL ZONE. A portion of the surface of a sphere included between two parallel planes. The circles in which these planes intersect the surface of the sphere arc called bases, and the distance... | |
 | Adrien Marie Legendre, Charles Davies - Geometry - 1857 - 442 pages
...POLYGON is a portion of the surface of a sphere bounded by three or more arcs of great circles. 4. A LUNE is a portion of the surface of a sphere included between two semi•circles intersecting in a common diameter of the sphere. 5. A SPHERICAL WEDGE, or UNGULA, is... | |
 | Richard Owen - Geology - 1857 - 288 pages
...deposited in the southern regions, and afterwards brought to the surface by igneous upheaval. 3. A Lune is a portion of the surface of a sphere included between two semicircles intersecting in a common diameter of the sphere. (Davies' Legendre, Book ix.) 4. A spherical... | |
 | RICHARD OWEN - 1857 - 264 pages
...deposited in the southern regions, and afterwards brought to the surface by igneous upheaval. 3. A Lune is a portion of the surface of a sphere included between two semicircles intersecting in a common diameter of the sphere. (Davies' Legendre, Book ix.) 4. A spherical... | |
 | Charles Davies, William Guy Peck - Mathematics - 1859 - 622 pages
...the area of the lunc multiplied by one-third of the radius of the sphere. SPHERICAL ZONE. Apportion of the surface of a sphere included between two parallel planes. The circles in which these planea intersect the surface of the sphere are called bases, and the distance... | |
 | Horatio Nelson Robinson - Geometry - 1860 - 470 pages
...spherical polygon having hut three sides, each of which is less than a semi-circumference. 5. A Lune is a portion of the surface of a sphere included between two great semi-circumferences having a common diameter. 7. A Spherical Pyramid is a portion of a sphere... | |
 | C. Davies - 1867 - 342 pages
...when it has but one point in common with it- Thus, AB is a tangent plane, touching the sphere at B32 A zone is a portion of the surface of a sphere, included between two parallel planes which form its bases- Thus, the part of the surface included between the planes AE and DF is a zone-... | |
 | Horatio Nelson Robinson - 1869 - 276 pages
...spherical polygon having but three sides, each of which is less than a semi-circumference. 5. A Lime is a portion of the surface of a sphere included between two great semi-circumferences having a common diameter. 7. A Spherical Pyramid is a portion of a sphere... | |
 | Charles Davies - Geometry - 1870 - 392 pages
...it has but one point in common with it. Thus, AB is a tangent plane, touching the sphere at B. 32. A zone is a portion of the surface of a sphere, included between iwo parallel planes which form its bases. Thus, the part of the surface included between the planes... | |
 | William Chauvenet - Geometry - 1871 - 380 pages
...parallel planes, one of which is the tangent plane at E, generated by the line ET. 34. Definition. A zone is a portion of the surface of a sphere included...between two parallel planes. The circumferences of the sections of the sphere made by the parallel planes are the bases of the zone ; the distance of the... | |
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A zone is a portion of the surface of a sphere included between two parallel planes. 
