A golf club 1 includes a head 3 and a shaft 5. The second electrode is formed on an insulation film covering at least a part of the first electrode and electrically connected with the first electrode through a contact hole formed in the insulation film. Inductance may be used directly as a position variable without mapping it to units of position. The method further includes receiving a response to the combined ENUMLNP query at the service provider node. In the processor-side CPU, two or more of the photometric modes corresponding to a selecting operation are selected, and one of the selected photometric modes is cyclically switched between the selected photometric modes upon reception of the switching operation instructing the switching. The irradiation of light greatly increases the activity of the coordination catalyst.