https://creativecommons.org/publicdomain/zero/1.0/https://www.rawpixel.com/image/14021390Edit ImageSaveSaveEditCropCustom TextJohn Wallis. Line engraving by G. B. Cipriani.Original public domain image from Wellcome CollectionMorePublic DomainFree CC0 image for Personal and Business useInfoView CC0 LicenseJPEGSmall JPEG 782 x 1200 px | 300 dpiLarge JPEG 1368 x 2100 px | 300 dpiFree DownloadJohn Wallis. Line engraving by G. B. Cipriani.More