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Keywords: Peter Salcher.png Portrait of Peter Salcher in 1890; an Austrian photograph 1848-1928 ; in 1886 working for the physicist Ernst Mach first take the photographs of bullets in flight http //pluslucis univie ac at/PlusLucis/031/s22 pdf W Gerhard Pohl Peter Salcher und Ernst Mach Schlierenfotografie von à berschall-Projektilen PD-old 1848 births Physicists from Austria Photographers from Austria 1928 deaths |