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

[winny]

Originally Posted by raaaid

i think youre confusing friction with wearing off

the bird PRODUCES WORK from evaporation

if you placed the bird in a well of constant level it could be working for 100 years but i admit it will not make it forever

Temperature and humidity also effect 'dippy birds' if it's too cold or humid they either stop working or slow right down... Conversley, if you replaced the water with ethanol the bird would drink faster.

So in answer to your question "why they say a perpetum mobil its imposible what about the drinking bird?"

Because perpetual is forever and dippy birds aren't. Perpetual motion requires that no energy is taken from anywhere except the machine it's self. This is clearly not the case here. Dippy birds need an external heat source to work.

It's basic stuff. What you're basically doing here is taking a solar panel and making it worse...