https://creativecommons.org/publicdomain/zero/1.0/https://www.rawpixel.com/image/14019436Edit ImageSaveSaveEditCropCustom TextA woman drawing at a desk; representing optics. Engraving by M. Dossier after G. Allou.Original public domain image from Wellcome CollectionMorePublic DomainFree CC0 image for Personal and Business useInfoView CC0 LicenseJPEGSmall JPEG 1200 x 1113 px | 300 dpiLarge JPEG 2750 x 2550 px | 300 dpiFree DownloadA woman drawing at a desk; representing optics. Engraving by M. Dossier after G. Allou.More