https://creativecommons.org/publicdomain/zero/1.0/https://www.rawpixel.com/image/13955875Edit ImageSaveSaveEditCropCustom TextWilliam Thomson, Lord Kelvin (1824-1907), physicist. Oil painting by Harry Herman Salomon after a photograph.Original public domain image from Wellcome CollectionMorePublic DomainFree CC0 image for Personal and Business useInfoView CC0 LicenseJPEGSmall JPEG 845 x 1200 px | 300 dpiLarge JPEG 2243 x 3187 px | 300 dpiFree DownloadWilliam Thomson, Lord Kelvin (1824-1907), physicist. Oil painting by Harry Herman Salomon after a photograph.More