Abstract: A touch input device is provided which can improve considerably an optical transmittance without using dot spacers. A gas cell for a touch input device has: a parallel plate member 2 including two flat plates disposed in parallel and facing each other; a diaphragm 5 for sealing a peripheral portion of the parallel plate member 2 in such a manner that gas is accommodated in a gap between the two flat plates in a state that the two flat plates can conduct relative displacement along opposing directions; and a frame 7 for holding the peripheral portion of the parallel plate member 2 in such a manner that the two flat plates can conduct the relative displacement. In this invention, best touch sense is realized by utilizing elasticity of gas. A further feature resides in that the touch sense can be adjusted freely by a simple method. Each switch element adopts an electrostatic induction method.

Abstract: A power generating installation located in a shallow water area of the sea for generating power utilizing a shallow water wave comprises a mooring member located either in the sea or at the sea bottom, a chain having one end connected with the mooring member and the other end to which a dead-weight is attached, and a float provided with a generator and a rotary member for rotating engaged with the chain. Rotary force of the rotary member produced when the float moves up and down according to an up-and-down motion of the wave is transmitted to the generator, thereby to generate power.

Abstract: An organochlorine solvent contained in water is decomposed by adding at least one of hydrogen peroxide and ozone to the water and then radiating ultraviolet rays to the water. According to the invention, a catalytic amount of a water-insoluble barium titanate substance is caused to co-exist in the water.