This classroom-quality laser ray box can be used in a wide variety of general optics experiments and demonstrations involving glass or acrylic prisms, lenses, or mirrors. The box emits 3 red beams, each of which can be switched on or off independently of the others; you can also configure the beams into parallel, convergent, or divergent orientations. The unit takes 3xAA batteries, not included.
Build a tumbling robot that gets up right after it has fallen down, without any outside help!
Defy gravity with this cool balancing eagle!
Every kid needs one of these spheres!
Cool new Pi tee featuring ultra soft and light blue 100% cotton shirt.
Discover a world of kaleidoscopic effects within this perfectly clear prism of the Light Crystal!
Build a magnetic levitating train with this science fair project kit!