| 摘要 |
PROBLEM TO BE SOLVED: To provide a current measuring device for measuring a current generated on a water surface or in water.SOLUTION: A current measuring device includes: a pair of electrodes 23a, 23b arranged on a water surface or in water; an emitter 1 for emitting light with intensity according to a potential difference between the pair of electrodes 23a, 23b; and a calculator 5 for calculating a current value on the basis of the intensity of the light emitted by the emitter 1. |
