Image Details
Caption: Fig. 22.
Cartoon sketch of a frustum, and its intersection ﹩( l,\ l^{\prime }) ﹩ with the horizontal plane H. The axis of symmetry is line A, common to planes V and H, where V and H are orthogonal. We consider inclinations i of the axis relative to line B, also in plane V.
© 2005. The American Astronomical Society. All rights reserved. Printed in U.S.A.