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Figure 7


Fig. 7. (A) Circular distribution of the precision angle of sand tossings ({alpha}3). The area of each sector is proportional to its frequency. The scale is indicated on the left half of the circle. (B) Angle of sand tossings ({alpha}2) as function of the angle of the tip ({alpha}1). This response is linear (solid line), and close to the perfect response (dotted line) (see text for details).