https://creativecommons.org/publicdomain/zero/1.0/https://www.rawpixel.com/image/13999036Edit ImageSaveSaveEditCropCustom TextWilliam Thomson, Baron Kelvin. Photograph by William Fullerton.Original public domain image from Wellcome CollectionMorePublic DomainFree CC0 image for Personal and Business useInfoView CC0 LicenseJPEGSmall JPEG 1200 x 947 px | 300 dpiLarge JPEG 2988 x 2358 px | 300 dpiFree DownloadWilliam Thomson, Baron Kelvin. Photograph by William Fullerton.More