Shown in the figure and pattern of a simple toy has survived from the ancient Celts. Most interesting is that it was a pleasure to play not only children but adults as unusual properties it possessed. If a little spinning object like a boat, clockwise, then, taking some time like a top, he stops, and then suddenly start spinning… backwards!
To all who are still at school remember the law of conservation of energy, it may seem incredible. But it is easy to deny that cannot be tested experimentally, to demonstrate. And this toy (see photo) everyone can do myself, but to experience its mysterious effect.
Interesting to observe those who are trying to explain the strangeness of her behavior. Most often it is associated with the magnetic field, electrostatic or aerodynamic forces, the presence within the fluid, and so forth, until you reach the evil forces. Well, of course, to the toy was transparent: it once ruled would suspect as a hidden motor, gyro or tricky springs. Closer to reality are… fishermen, often observing a similar phenomenon during sharp turns motor boats.
The story of a mysterious toy no less mysterious than her behavior. Accurate data are not available, but I suppose that for the first time this effect was discovered accidentally from obscure objects found during the excavation of settlements of an ancient European tribe of the Celts. Tell that one archaeologist lost in thought unconsciously twisted on his Desk a strange thing, which was considered a tip of the Celtic boom. Suddenly he noticed that he was carefully polished, but the pebble steel on their own changes the direction of rotation. We can only guess how you knew about the ancient Celts or Gauls, as the Romans called them.
Now, however, they have the ability to change the direction of rotation, called the Celtic stones.
This unusual toy can be made of plastic, wood, metal, plaster or other easily processed material. To try, copy the form “boat”, shown in the figure. The quality of the model is very simple: count the number of revolutions which it will make after changing the direction of rotation. Boat can do up to six turns. To check the effect of the electoral rotation is better not to spin it, and flip on top of one end of the model: it will begin to rotate.