Fresnel aspherical acoustic mirrors
On Wed, 24 Oct 2012 16:52:40 +0100, Tim+ wrote:
GB wrote:
On 24/10/2012 13:11, Jim Hawkins wrote:
without the user having to look freakish.
Aye, as Hamlet would say, there's the rub.
Bring back ear trumpets I say!
What?
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