https://creativecommons.org/publicdomain/zero/1.0/https://www.rawpixel.com/image/14008509Edit ImageSaveSaveEditCropCustom TextFabry and Perot electrical equipment. Photograph, 1897.Original public domain image from Wellcome CollectionMorePublic DomainFree CC0 image for Personal and Business useInfoView CC0 LicenseJPEGSmall JPEG 1200 x 668 px | 300 dpiLarge JPEG 3500 x 1949 px | 300 dpiBest Quality JPEG 3544 x 1974 px | 300 dpiFree DownloadFabry and Perot electrical equipment. Photograph, 1897.More