Battery operated hearing aid, circa 1910

Battery operated hearing aid, circa 1910

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Credit: SCIENCE PHOTO LIBRARY

Caption: Early battery operated hearing aid dating from around 1910. It was known as The Ardente and was manufactured by R.H. Dent of Oxford Street, London. This invention followed the new technology of the time; microphones and batteries. It is made of metal and worked by amplifying sounds.

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Keywords: 1900s, 1910, 1910s, 20th century, acoustic, acoustics, aid, aids, amplification, amplifies, antique, antiques, apparatus, ardente, audiology, auditory, battery, battery operated, beige background, deafness, dent, device, devices, ear, england, english, hearing, hearing aid, hearing aids, historical, history, instrument, instruments, medical, medical instrument collection, medicine, metal metallic, partial deafness, r h dent, sound, twentieth century

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