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A SYSTEM OF APPLIED OPTICS
| FORMULA | PAGE | |
| VIII. | Relation between and α for a Simple Lens free from Coma | 217 |
| IX. | Spherical Aberration of a Simple Lens free from Coma | 218 |
| X. | Condition of Least Spherical Aberration for a Simple Lens | 218 |
| XI. | Difference between Conditions of Least Spherical Aberration and of no Coma | 218 |
| XII. | Spherical Aberration of a Simple Lens differentiated with respect to α | 218 |
| XIII. | Condition of Greatest Possible Constancy of Aberration when the Vergency varies | 218 |
| XIV. | Difference between Condition of Vergency Insensitiveness and of no Coma | 218 |
| XV. | Angular Value of the Coma in Primary Plane by Central Oblique Reflection from Spherical Mirror | 219 |
| SECTION VIIIa
Coma at the Foci of Eccentric Oblique Pencils | ||
| XVI. | The Linear Value of the Spherical Aberration Coma in Primary Plane | 225 |
| XVII. | Universal Expression for the Angular Value of the above, subtended at Lens Centre | 225 |
| XVIII. | The Linear Value of the Coma Proper in Primary Plane | 227 |
| XIX. | Universal Expression for the Angular Value of the above, subtended at Lens Centre | 228 |
| XX. | Universal Expression for the Angular Value in Primary Plane of both sorts of Coma, subtended at Lens Centre | 228 |
| XXa. | Simple Lens. General Condition of Elimination of E.C.s | 229 |
| XXb. | Simple Lens. General Condition of Elimination of Coma | 229 |
| XXc. | Simple Lens. General Expression for the Coma when E.C.S are Eliminated | 230 |
| XXd. | Simple Lens. General Condition of the Elimination of Astigmatism | 230 |
| XXe. | Simple Lens. General Expression for Angular Value of the Coma when there is no Astigmatism | 230 |
| XXf. | Simple Lens. General Expression for the KC.s when Coma is Eliminated | 231 |
| XXg. | Simple Lens. General Expression for the Astigmatism when there is no Coma | 232 |
| XXI. | Expression for Angular Coma for Two Lenses in Succession | 233 |
| XXII. | Expression for Angular Coma for Three Lenses in Succession | 233 |
