Floating Ring Magnets Material_Copper Large-scale typical flower model with

Large-scale typical flower model with removable floral parts and a bisected ovary showing internal ovule arrangement for detailed botany instruction

Twelve-position rotary capacitance substitution box selecting one capacitor at a time

Eight aluminum-shank tuning forks tuned to scientific pitch (C4 = 256Hz) and ranging from 5 9/16 to 7 1/8 inches

color filters with Young's slits

Floating Ring Magnets Material_Copper Large-scale typical flower model withFive color coded ceramic ring magnets at 46mm diameter mount on a 15cm wooden dowel, levitating above one another when oriented with like poles facing for a memorable repulsion demo.