Original file (2,479 × 3,508 pixels, file size: 62 KB, MIME type: image/vnd.djvu, 2 pages)
English: On the constancy of the velocity of light
|Source||Proc. Roy. Amst.|
|Author||w:Willem de Sitter|
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|current||11:20, 12 January 2011||2,479 × 3,508, 2 pages (62 KB)||D.H|
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