Concave Glass Mirror, 50mm Diameter, 150mm Focal Length Pack Size_Single Enlarged mandible model exposes lower

Enlarged mandible model exposes lower jaw teeth

3g nickel-plated steel balls on a red wood base

Plastic-bodied wave apparatus with eccentric discs that drive metal rods up and down as the handle turns

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

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

Concave Glass Mirror, 50mm Diameter, 150mm Focal Length Pack Size_Single Enlarged mandible model exposes lowerConcave 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.