Planck's Constant Determination Box Material_Hardwood Wall-mountable beech wood draining rack

Wall-mountable beech wood draining rack measures 20 x 20 inches and holds up to 90 pieces of labware inverted for post-wash drying in chemistry labs

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

5-inch female pelvis model demonstrates 9-month pregnancy anatomy and fetal positioning before delivery for obstetrics teaching

5 inch dimensions in brass

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

Planck's Constant Determination Box Material_Hardwood Wall-mountable beech wood draining rackDesigned to measure Planck's constant through the photoelectric effect, relating photon frequency to the kinetic energy of emitted electrons for quantum physics investigations.