太陽光発電実験
GelsonlabHSTM-069教育科学玩具太陽光発電実験
太陽光発電実験 uses the high-brightness LED lamp as the light source, through the convex lens to focus on the projection film, and finally through the lens of three convex lens groups, the picture is projected on the screen, the film has the changing constellation of the moon circle, the constellation position change of the nebula and the four seasons sky, so as to understand the astronomical knowledge.