Re: [Phys-L] Personal Sound Amplifiers (PSA)

[Ludwik Kowalski <kowalskil@mail.montclair.edu>]

OOPS a tying error ==> people might postpone wearing them, for many year. 



On Jul 15, 2015, at 12:12 PM, Ludwik Kowalski wrote:

> Personal Sound Amplifiers (PSA)
>
> Hearing aids are very expensive, typically from $3000 to $6000 a pair. 
>
> But some people might wearing them, for many year. 
>
> I describe this alternative at my university website:
>
> http://csam.montclair.edu/~kowalski/aps.htm
>
> Feel free to share this short essay with others.
>
> Comments will be appreciated. 
>
> Ludwik Kowalski (see Wikipedia)
>
>
> _______________________________________________
> Forum for Physics Educators
> Phys-l@www.phys-l.org
> http://www.phys-l.org/mailman/listinfo/phys-l