the drawings is in schematic form it is noted that in different figures similar or identical elements may be provided with the same reference signs fig1 shows a rotor blade 20 of a wind turbine the rotor blade 20 comprises a root section 21 with a root 211 and a tip section 22 with a tip 221 the root 211 and the tip 221 are virtually connected by the span 26 which follows the shape of the rotor blade 20 if the rotor blade were a rectangular shaped object the span 26 would be a straight line however as the rotor blade 20 features a varying thickness the span 26 is slightly curved i e bent as well note that if the rotor blade 20 was bent itself then the span 26 would be bent too the rotor blade 20 furthermore comprises a leading edge section 24 with a leading edge 241 and a trailing edge section 23 with a trailing edge 231 the trailing edge section 23 surrounds the trailing edge 231 likewise the leading edge section 24 surrounds the leading edge 241 at each spanwise position a chord line 27 which connects the leading edge 241 with the trailing edge 231 can be defined note that the.