Keywords: Photography of bow shock waves around a brass bullet, 1888.jpg Ernst Mach in 1888 in Prague using Schlieren Photography on a 5 mm-diameter negative It depicts the waves around a supersonic brass bullet Ernst Mach en 1888 à Prague à l ™aide de la technique de photographie Schlieren strioscopie sur un film négatif de 5mm de diamètre Elle montre les ondes de choc autour d ™une balle supersonique en laiton 1888 Scan from book now lost Ernst Mach 1838 “1916 http //history nasa gov/SP-4219/Chapter3 html PD-old Uploaded with UploadWizard Ernst Mach Schlieren photography of bullets in flight |