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Sunday, 21 June 2015

Hearing aid

The first mention of a hearing aid was made in 1588 by an Italian Giovanni Porta. In a book entitled Natural Magick, he described wooden aids shaped like animal ears.

The Carmelite friar Père Sébastien Truchet designed an early hearing aid, based on the curves of a parabola. His pioneering model was basically a long horn with a large pointed opening at one end.

An 18th-century drawing of ear trumpets

Electrical hearing aids were invented in 1901 by Miller Hutchinson. These first hearing aids weighed 16 lbs and had to be placed on the user's lap or on an adjacent table.

President Ronald Reagan revealed he wore hearing aids in 1983, leading to greater acceptance and increased sales of the devices among seniors. At the age of 72, he said that his hearing loss dated to his early Hollywood days when a .38-caliber blank was fired close to his right ear on a film set . 

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