[Noxomanus]

This is all very interesting but it doesn't really relate to the world as Tolkien had it created.It's a fact physics don't really apply and there are many impossibilities in his world in regard to this as has been pointed out before.Winged Drakes and the great Eagles are other examples,it's impossible for animals their size to be able to fly. The biggest known flying creatures,pterosaurs like Quetzalcoatlus, had wingspans of 12-13 meters wich certainly isn't the size of Smaug and Thorondor,and these pterosaurs could only fly because of extreme weightsaving features.It would also be impossible for Trolls to be created from stone or to place huge power and a mind into a Ring.Yet we dont care and enjoy these stories...Don't make too great a fuss about the explainability of Tolkiens world.