One side of the entire wall is covered by a mirror, therefore the space seems enlarged twice,
and the number of triangles may increase from two to three or four with the angle one looks into
the space. Moreover, the big triangle will change its form into a diamond.
Sneakers walking on the moon
24 craters are on a big triangle, and another 15 on a small one.
Five different sizes of craters are used. They are like fireworks.
They are designed like a mold of fireworks. The mold of fireworks should be a perfect ball shape
made out of paper. To display perfect radial fireworks to decorate a night sky, the mold into
which gunpowder is charged should also be a perfect ball.
Therefore, many perfect globular forms are engraved into the triangle.