Which energy can develop by arm movement, is clarified at this example:

The interPICTURE is at the wall of a high hall. The picture itself measures 10 metres of height.
The lamellae are 10 cm wide.

Broader metal stripes in addition are appropriate at the vertical edges now. Hinges at the edges make the stripes turning round cash.

A little child is coming from three years of life now and starts to move the stripes and to change the picture. Which enchanting play of the size conditions takes place there?

What kind of impressive experience may it be for the child to be able to make a difference so? Influencing the world which power has it?