Abstract: Provided are a power generation method and a power generating element capable of obtaining an electromotive force by utilizing humidity variation in an environment and having excellent operation stability. An aqueous solution of an ionic compound having deliquescence is separated by an ion permeable membrane, electrodes are inserted into the aqueous solution on both sides of the ion permeable membrane, one is blocked from outside air and sealed, and the other is connected to the outside air, and a difference in ion concentration derived from the ionic compound in the aqueous solution is generated across the ion permeable membrane due to a change in humidity in the outside air to generate an electromotive force between the electrodes.

Abstract: An antiskid device for a vehicle to be attached to a tire of the vehicle is disclosed that includes a belt part (2) disposed so as to encircle the tread part of the tire and generating a gripping force on a road surface; an outer side part (3) and an inner side part (4) configured to be capable of holding the belt part (2) with respect to the tread part; and a gripping force reduction part (20) provided on the belt part (2) so as to reduce the gripping force generated by the belt part (2).