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Old 07-19-2010, 08:50 PM   #2 (permalink)
Rokeby
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Here it is:



Dyson Air Multiplier? bladeless fan | Dyson.com

Ok, they say more air moved through the ring than pumped in through
the base...
But who's to know?
What volume/pressure of air is being moved/pumped through the base?
It's the "pumped" thing... that requires energy,
and there has to be losses... no free lunch and all that.
How much energy in?

What next, Dyson's Perpetual Motion Barbecue Rotisserie?

Still, cool product, cool ad campaign... I want one.
Only about $260 at Bed, Bath and Beyond...

Not.
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