File:Wallace-bedford-level.png

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Wallace-bedford-level.png (340 × 261 pixels, file size: 19 KB, MIME type: image/png)

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English: The view through the level used by Alfred Russel Wallace in the Bedford Level experiment, a wager between him and John Hampden to demonstrate the curvature of the earth. This diagram was printed in The Field, a sports magazine and reproduced in Wallace's autobiography.
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Author Chris55
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This is a faithful photographic reproduction of a two-dimensional, public domain work of art. The work of art itself is in the public domain for the following reason:
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current23:53, 29 January 2011Thumbnail for version as of 23:53, 29 January 2011340 × 261 (19 KB)Chris55 (talk | contribs){{Information |Description ={{en|1=The view through the level used by Alfred Russel Wallace in the Bedford Level experiment, a wager between him and John Hampden to demonstrate the curvature of the earth. This diagram was printed in The Field,

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