The VitaMix blender (5 HP blender/smoothie maker on steroids) will boil water 
in a few minutes by its motion alone. Sound is probably just similar, but with 
finesse. It would be interesting to calculate the energy required and if it's 
within reasonable limits for "audio" transmission...

Jinx wrote:
> Saw this on local TV last night. Includes video link
> 
> http://www.tv3.co.nz/News/Inventorscreationsaidtoboilwaterusingsound/tabid/2
> 09/articleID/44707/cat/41/Default.aspx
> 
> Intriguing, but ....
> 
> Story on same
> 
> http://www.stuff.co.nz/thepress/4379593a6530.html
> 
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