Planck's Constant Determination Box Material_Hardwood Twelve-position rotary capacitance substitution box

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

Built to grip round flasks and condensers during distillation or reflux

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

Manually-operated seismograph model that traces shock waves onto a pulled paper strip

Planck's Constant Determination Box Material_Hardwood Twelve-position rotary capacitance substitution boxDesigned to measure Planck's constant through the photoelectric effect, relating photon frequency to the kinetic energy of emitted electrons for quantum physics investigations.