Page:Harold Dennis Taylor - A System of Applied Optics.djvu/15

From Wikisource
Jump to navigation Jump to search
This page has been proofread, but needs to be validated.
CONTENTS
xi
FORMULA PAGE
XXIIIa. Expression for Angular Value of the Coma in the Primary Plane, produced by Oblique Refraction through a Parallel Plane Plate 237
XXIIIb. The above when an Element occurs at the Second Surface 237
XXIV. Angular Value of the Coma in Primary Plane produced by Eccentric Oblique Reflection from a Spherical Mirror 243
SECTION IX

Distortion and the Rectilinearity of Images—Von Seidel's Fifth Condition

I. The Expression for the Tangent Ratio apart from Spherical Aberration 250
II. Coddington's Formula expressing Ratio between the Tangents of Emerging and Entering Principal Rays, inclusive of the Spherical Aberration 251
IIa. Coddington's Formula for above in case of Two Lenses in Succession 254
III. New Universal Formula for Distortion of Image 262
IV. Same, applied to a Series of n Lenses or Elements 264
(23). The Linear Distortion produced by a Parallel Plane Plate 267
V. Formula for the Fractional Distortion produced by a Parallel Plane Plate 268
Formula for the Magnification produced by a Telescope 278
VI. Formula for the Magnification produced by a Simple Microscope or Lens 279
VII. Formula for the Magnification produced by a Compound Microscope 280
SECTION X

Achromatism

I. Variation of the Power of a Lens due to Changes in Refractive Index consequent upon Colour 281
Ia. Diameter of Least Circle of Chromatic Confusion 282
Ib. Angular Value of above, subtended at Lens Centre 282
II. Condition of Axial Achromatism for Two Lenses in Contact 283
III. Condition of Axial Achromatism for Two Separated Lenses 284
IV. Condition of Axial Achromatism for a Series of Separated Lenses 285
V. The Chromatic Variation of after Direct Refraction through a Parallel Plane Plate 286