Drinking Giraffe Heat Engine: a rare vintage version of the famous drinking bird heat engine- but in the form of a long necked mammal! With four legs instead of two the physics is the same- cooling by evaporation at the head leads to lower pressure in the top bulb such that the volatile fluid rises up the neck making the giraffe’s neck top heavy and the critter tips over dipping its face in the water and letting the fluid return to the bottom bulb. The process repeats as long as the top stays we

Baby Giraffe Learning to Walk