https://creativecommons.org/publicdomain/zero/1.0/https://www.rawpixel.com/image/14016885Edit ImageSaveSaveEditCropCustom TextOtto von Guericke. Line engraving by C. Galle, 1649, after A. von Hulle.Original public domain image from Wellcome CollectionMorePublic DomainFree CC0 image for Personal and Business useInfoView CC0 LicenseJPEGSmall JPEG 788 x 1200 px | 300 dpiLarge JPEG 2246 x 3419 px | 300 dpiFree DownloadOtto von Guericke. Line engraving by C. Galle, 1649, after A. von Hulle.More