The concept is called thermoacoustic refrigeration -- using sound waves to cool something. The technology offers several advantages over conventional cooling systems, says a Purdue University engineer ...
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Beautiful Relaxing Nature Sounds of Waves ~ Water Music, Whale Sounds and Birds Singing MelodiesBeautiful Relaxing Nature Sounds of Waves ... great relaxing music to come! How to meditate? How to relax? Just imagine to be in the deep green of the nature with the calming sound of water ...
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