OPB3 天
Fold paper. Insert lens. This $2 microscope changes how kids see the world
The main part of the Foldscope is one long sheet of paper. Half of this is blue (that’s the front portion) and the other half is yellow (which you fold to become the back of the foldscope).
wusf3 天
Fold paper. Insert lens. This $2 microscope changes how kids see the world
The main part of the Foldscope is one long sheet of paper. Half of this is blue (that's the front portion) and the other half is yellow (which you fold to become the back of the foldscope). Magnets ...