https://creativecommons.org/publicdomain/zero/1.0/https://www.rawpixel.com/image/13982198![Otto von Guericke. Line engraving by C. Galle, 1649, after A. von Hulle.](https://images.rawpixel.com/image_social_portrait/cHJpdmF0ZS9sci9pbWFnZXMvd2Vic2l0ZS8yMDI0LTAyL2xyL3djZjVqYjRtam0taW1hZ2UuanBn.jpg)
![Otto von Guericke. Line engraving by C. Galle, 1649, after A. von Hulle.](https://images.rawpixel.com/image_social_portrait/cHJpdmF0ZS9sci9pbWFnZXMvd2Vic2l0ZS8yMDI0LTAyL2xyL3djZjVqYjRtam0taW1hZ2UuanBn.jpg)
Otto von Guericke. Line engraving by C. Galle, 1649, after A. von Hulle.
Otto von Guericke. Line engraving by C. Galle, 1649, after A. von Hulle.
Original public domain image from Wellcome Collection
Public DomainFree CC0 image for Personal and Business use