Hughes microphone detector, 1865-1875 | Science Museum Group Collection
Surgeon searching for a bullet using an induction balance and earpiece containing a Hughes microphone. Apparatus contrived by David Edward Hughes (1830-1900) - Album alb5530993
David Hughes | Aviation Pioneer, Radio Pioneer, Telegraphy | Britannica
David Edward Hughes - LAROUSSE
Hughes microphone hi-res stock photography and images - Alamy
Hughes' carbon microphone, 19th century - Stock Image - C007/7551 - Science Photo Library
David Hughes | Aviation Pioneer, Radio Pioneer, Telegraphy | Britannica
Hughes microphone hi-res stock photography and images - Alamy
Hughes microphone detector, 1865-1875 | Science Museum Group Collection
Hughes David - Histoire
Histoire du téléphone Site de Jean GODI
David Edward Hughes - Wikipedia
David Hughes | Lemelson
David Hughes
Hughes microphone detector, 1865-1875 | Science Museum Group Collection
The Father of the Microphone | Mintage World
Made up in Britain: Microphone : David Edward Hughes 1878
Made up in Britain: Microphone : David Edward Hughes 1878
David Edward Hughes, 1831 - 1900. Inventeur anglo-américaine, pratique expérimentateur et professeur de musique. Aussi connu pour son travail sur l'impression telegraph et le microphone Photo Stock - Alamy
Hughes Microphone :: David Edward Hughes - Life and Discoveries
David Edward Hughes - Wikipedia
David Edward Hughes - Wikipedia
Made up in Britain: Microphone : David Edward Hughes 1878
