why they say a perpetum mobil its imposible what about the drinking bird?

[winny]

Originally Posted by raaaid

yes actually a wheel conected to a solar cell is equivalent to the drinking bird.

but that is also a perpetuum mobil as long as theres the sun

you seem educated what about my proposition to thicken a drinking bird a trillion times keeping its height
(

The idea of perpetual is forever, the sun isn't forever. You can't call anything that relies on an exhaustable source, no matter how big, perpetual.

Don't think a giant dippy bird is viable, massivley inefficient and financial suicide.
At the end of the day the bird is a heat engine, and a pretty rubbish one at that.