#6 HEARING AID
The hearing aid, also known as a hearing instrument, is a device designed to amplify sound. In 1899, Miller Reese Hutchinson invented the first electronic hearing aid made of a carbon microphone, battery and ear set.
The Akouphone, as it was called, was so large that it had to be placed on a table! Just over a decade later, the Hutchinson Acoustic Company created the first wearable hearing aid called the Acousticon. The device was smaller and portable, although early models were still cumbersome to carry around.
Newer hearing aids are now so small that they can be effectively concealed while in use, and some even contain features that reduce background noise.
