सौर उर्जा प्रयोग

सौर उर्जा प्रयोग

Gelsonlab HSTM-069 शिक्षण विज्ञान खेळणी सौर उर्जा प्रयोग
 
सौर उर्जा प्रयोग 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.