File:Solar eclipse parallel approximation.svg

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English: The size of the penumbra is easy to calculate in the approximations that the umbra is a point and the rays from the Sun are parallel (Sun at infinity).
Date
Source Own work
Author Guy vandegrift

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Date/TimeThumbnailDimensionsUserComment
current19:37, 18 May 2017Thumbnail for version as of 19:37, 18 May 2017557 × 366 (56 KB)Guy vandegrift (talk | contribs)stroke path problem fixed?
19:21, 18 May 2017Thumbnail for version as of 19:21, 18 May 2017557 × 366 (52 KB)Guy vandegrift (talk | contribs)User created page with UploadWizard

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