Cube of Light

Cube of Light is a play equipment that used the light of the sun. Two are set up in the plaza in the housing complex "Duplex the Yokohama Yamate" .
The light of the sun streams from the space of the side of a cube once a day. getting in this cube at the time of which sun light streams straight on the afternoon of sunny day , and rotate the mirror of the pillar-shaped by hand. The moving reflected light is projected onto the wall inside.
Moreover, a small reflector is set up on the mirror of the pillar-shaped in the two cubes are located in the place where 25m distance was put. and the reflected light shines on each other at the Vernal Equinox Day and the Autumnal Equinox Day . The reflected light can be seen from among one of boxes when the other is looked at at the time. The time that the sunray streaming is greatly different in summer and winter. Please find the difference of the season with the appearance of the light that changes every day.