Mathematical Papers of Sir William Rowan Hamilton Volume IV
Contributors: B. K. P. Scaife (Editor)
Edition: 1st edition
Publisher: Cambridge University Press
Published: February 15, 2001
Language: eng
Format: Hardcover
Number of pages: 900
ISBN-13: 9780521592161
Subjects: History of science; Science/Mathematics; Geometric Optics; Mathematics (General); Mathematics; General; Mathematics / General; Optics
First sentence: 110. If the aberrations be measured from a focus, at which the radius of curvature of the caustic vanishes, the expression (M)" for the aberrations, or rather for their first terms, vanish also, and the convergence is much more accurate than at other points of the caustics; on which account we may call these foci the principal foci and the corresponding rays the axes of the system.