I love it ,,,I wonder who shes talking to an what year it is on the other end of the line!
PS if its a hearing aid what did they look like in those days an what size batteries? if any.. :blink:
The Advent of Electric Hearing Aids,,
In the early 1920s, hearing aid technology incorporated the use of vacuum tubes, which allowed a much more efficient method for amplifying sound. But the early electrical hearing aids were still far too unwieldy to be carried around easily--many were as large as desk radios, and just as heavy. Luckily, an important development in the history of hearing aids was just around the corner.
Smaller Batteries, Smaller Hearing Aids
One of the first major changes in the history of hearing aids that led to a decrease in their size was the miniaturization of batteries. Previously, batteries were large, heavy, and could not hold a charge for very long, making them impractical for hearing aid use. Battery packs had to be worn on the hearing-impaired person's body. By the 1930s, hearing aid technology had progressed so that aids could be portable.http://www.buzzle.com/editorials/8-10-2006-105110.asp