"time reversal acoustics"

Udhay Shankar N udhay at pobox.com
Sat Apr 22 14:05:26 EDT 2006


I found this off a link from Schneier's newsletter. Can anybody 
comment on this?

Udhay

http://www.physorg.com/news12093.html

>For every burst of sound, there must exist a sound that bursts in 
>reverse, according to the theory of time reversal acoustics. From 
>their discoveries of some surprising characteristics of mediums and 
>frequencies, scientists have gained insight into acoustic time 
>reversal, which could impact applications such as sending 
>confidential messages in cryptography.


-- 
((Udhay Shankar N)) ((udhay @ pobox.com)) ((www.digeratus.com))


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