Concave Glass Mirror, 50mm Diameter, 150mm Focal Length Pack Size_Single providing dense uniform spheres for

providing dense uniform spheres for ramp-and-collision experiments where a heavier projectile is needed than the plastic marbles can provide

Selected through four rotary-switch decades from 0 to 11

supplying a hands-on teaching tool for atomic and molecular orbital visualization in introductory and advanced chemistry

with lengths varying by density to isolate the mass-volume-density relationship for student investigation

Concave Glass Mirror, 50mm Diameter, 150mm Focal Length Pack Size_Single providing dense uniform spheres forConcave glass mirror, 50mm diameter and 150mm focal length, the f 3 curvature stretching the focal throw for demos that need the focal point set comfortably beyond the mirror face.