https://creativecommons.org/publicdomain/zero/1.0/https://www.rawpixel.com/image/13981498Edit ImageSaveSaveEditCropCustom TextJohn Wallis. Line engraving by M. Burghers, 1699, after W. Sonmans, 1698.Original public domain image from Wellcome CollectionMorePublic DomainFree CC0 image for Personal and Business useInfoView CC0 LicenseJPEGSmall JPEG 772 x 1200 px | 300 dpiLarge JPEG 2160 x 3358 px | 300 dpiFree DownloadJohn Wallis. Line engraving by M. Burghers, 1699, after W. Sonmans, 1698.More