Файл:Autograph of Heinrich Hertz.png

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Autograph_of_Heinrich_Hertz.png(416 × 206 пиксель, файлдын көлөмү: 9 KB, MIME түрү: image/png)

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Жыйынтыгы

Сыпаттама This is Heinrich Rudolf Hertz's autograph, from Oliver Heaviside: Sage in Solitude (ISBN 0-87942-238-6), p. 111. The image is reprinted courtesy of the Burndy Library (as stated in the credits in the back of the book, p. 318), but its age implies that it's public domain. (It must have been made in 1894 or earlier.) It was scanned on an Epson Perfection 1250 at 400dpi, cleaned up (some text was showing through the back) in Photoshop, reduced to indexed grayscale, and saved as PNG using the 'Save for Web' optimizer.
Дата circa 1894
date QS:P,+1894-00-00T00:00:00Z/9,P1480,Q5727902
  • 28 июль 2004 (original upload date)
Булак Transferred from en.wikipedia to Commons.
Автор

Heinrich Rudolf Hertz

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Original upload log

The original description page was here. All following user names refer to en.wikipedia.
  • 2004-07-28 00:51 Grendelkhan 416×206×8 (8905 bytes) This is Heinrich Rudolf Hertz's autograph, from ''Oliver Heaviside: Sage in Solitude'' ({{ISBN|0-87942-238-6}}), p. 111. The image is reprinted courtesy of the Burndy Library (as stated in the credits in the back of the book, p. 318), but its age implies that

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