https://www.usa.gov/copyrighted-government-workshttps://www.rawpixel.com/image/3325630Edit ImageSaveSaveEditCropCustom TextThis hemispherical window was designed to cover the camera ports inside Argonne Lab's 12-foot (diameter) hydrogen bubble chamber (c.1970). Original public domain image from FlickrMorePublic DomainFree CCO U.S. Government image for Personal and Business useInfoView CC0 LicenseEditorial use only JPEGSmall JPEG 968 x 1200 px | 300 dpiLarge JPEG 2580 x 3200 px | 300 dpiFree DownloadThis hemispherical window was designed to cover the camera ports inside Argonne Lab's 12-foot (diameter) hydrogen bubble chamber (c.1970). Original public domain image from FlickrMore