Battery Operated Hearing Aid
by Science Photo Library
Title
Battery Operated Hearing Aid
Artist
Science Photo Library
Medium
Photograph - Photograph
Description
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.
Uploaded
July 26th, 2016
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