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Acoustic "Superlens" Could Make Subs Invisible
Al writes "Nicholas Fang and colleagues at the University of Illinois at Urbana-Champaign have created the first acoustic superlens, which could be used to create high-resolution ultrasound images, and perhaps ultimately make subs and ships invisible to sonar. Researchers have previously developed materials that bend light in ways that appear to violate the laws of physics, creating so-called optical superlenses. The acoustic superlens consists of an aluminum array of narrow-necked resonant cavities filed with water — the dimensions of the cavities are tuned to interact with ultrasound waves. When ultrasound waves move through the array, the cavities resonate and the sound is refocused."
Isn't navy sonar already killing the whales?
I can't believe this is going to help things.
quiquid id est, timeo puellas et oscula dantes.
Crap, I miss countermeasures. Wonder if the Air force is still hiring...
Dude - we're staring at a debt of $63.8 trillion [and that's a conservative estimate]:
Leap in U.S. debt hits taxpayers with 12% more red ink
...The latest increase raises federal obligations to a record $546,668 per household in 2008, according to the USA TODAY analysis. That's quadruple what the average U.S. household owes for all mortgages, car loans, credit cards and other debt combined...
By Dennis Cauchon, USA TODAY
2009-05-28
http://www.usatoday.com/news/washington/2009-05-28-debt_N.htm
Bottom line: The government took on $6.8 trillion in new obligations in 2008, pushing the total owed to a record $63.8 trillion...
By the time the Kenyan Prince and Telly Axelrod and Bolshoi Emanuel and Blofeld Soros and the rest of the tribe are finished, there won't be any USA left [much less any USAF to hire you].
If you want to do this kind of work in the future, then you'll need to emigrate to China.