On Sep 4, 2012, at 6:30 AM, Giovanni Santostasi <gsantost...@gmail.com> wrote: > > What happens is that your muscles are like springs and they are getting > stretched by the weight. When they are stretched beyond a point the muscle > pulls back and then relaxes, this over and over again and this oscillatory > motion does indeed work.
Somehow this explanation reminds me that annoying anomaly in classical physics is just explained away by inventing epicycles. Classical physics is based on simplified conception of reality. It does not deal with gravity and permanent electromagnetic forces that are making bodies rigid and solid. I still think that Terry's explanation is incomplete, because I assume that permanent magnets are demagnetised more slowly if magnets are cooled significantly. If neodymium magnets are heated close to 80ºC, the will demagnetise very rapidly. And my assumption is that demagnetisation rate is close to zero near absolute zero. —Jouni
