https://creativecommons.org/publicdomain/zero/1.0/https://www.rawpixel.com/image/14021693Edit ImageSaveSaveEditCropCustom TextHydraulics: diagrams of water pressure and force action. Engraving, c.1861.Original public domain image from Wellcome CollectionMorePublic DomainFree CC0 image for Personal and Business useInfoView CC0 LicenseJPEGSmall JPEG 1200 x 664 px | 300 dpiLarge JPEG 3500 x 1937 px | 300 dpiBest Quality JPEG 3567 x 1974 px | 300 dpiFree DownloadHydraulics: diagrams of water pressure and force action. Engraving, c.1861.More