File:EB1911 Vision - Spherical Aberration.jpg
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Summary
| Description |
English: Aberration of Sphericity.—Suppose, as in the figure, M A K to be a refractive surface on which parallel rays from L to S impinge, it will be seen that those rays passing near the circumference are brought to a focus at F¹, and those passing near the centre at F²—intermediate rays being focused at N. Thus on the portion of the axis between F¹ and F² there will be a series of focal points, and the effect will be a blurred and bent image. |
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| Date | published 1911 | |||
| Source | “Vision,” Encyclopædia Britannica (11th ed.), v. 28, 1911, p. 133, fig. 7. | |||
| Author | Unknown artist | |||
| Permission (Reusing this file) |
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File history
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 17:36, 15 September 2021 | | 697 × 412 (84 KB) | Bob Burkhardt | {{Information |description = {{en|1=Aberration of Sphericity.—Suppose, as in the figure, M A K to be a refractive surface on which parallel rays from L to S impinge, it will be seen that those rays passing near the circumference are brought to a focus at F¹, and those passing near the centre at F²—intermediate rays being focused at N. Thus on the portion of the axis between F¹ and F² there will be a series of focal points, and the effect will be a blurred and bent image.}} |date = {{Da... |
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