Round Convex Glass Mirror, 75mm Diameter, 300mm Focal Length Subcategory_Weights and Masses Open-frame demo motor with two

Open-frame demo motor with two opposing coils on a spinning axle and 4mm banana inputs

Aluminum-nickel-cobalt bar magnets engineered for stable

supporting both additive and subtractive color demonstrations in optical box setups

Compares liquid-expansion rates by suspending five removable glass bulbs-and-tubes in a shared heated water trough

Round Convex Glass Mirror, 75mm Diameter, 300mm Focal Length Subcategory_Weights and Masses Open-frame demo motor with twoLong focal 75mm convex glass mirror at 300mm focal length and ~1. 2mm thickness, the gentlest divergence in the 75mm convex line for the largest virtual reduced images.