In an air conditioning apparatus, an air conditioning case has an upstream portion defining an air intake port through which air flows into the upstream portion substantially parallel to a core surface of a heat exchanger. The wind turbine generates wind-generated electric power in residential, business, industrial, and electric utility applications. A gas-liquid separating device is interposed between the transfer chamber and the connecting passage so that the transfer chamber and the connecting passage are connected through the gas-liquid separating device. The optical efficiency is sufficient that recording of an information signal can be performed with the optical pickup. The polychronous wave propagation system relies on time delays between the propagated waves that result from propagation velocities of the propagated waves through the wave propagation medium. In so doing, a lens that is visually transparent but electromagnetic interference opaque is formed.