Crookes Radiometer, 2.75" (70mm) Diameter, on Plastic Base Subcategory_Racks and Stands Twelve-slot natural wood buret rack

Twelve-slot natural wood buret rack organizes vertical buret storage and simultaneous titration setup in chemistry and analytical laboratory classrooms

Single-decade resistance box stepping from 1k ohm to 10k ohms in 1k-ohm increments on a rotary dial

dimensioned as the matched replacement carriage for the LED ray box (PH0602ALED) track when an original rider is lost or damaged

NPN transistor in a protective enclosure with labeled base

its small thermal capacity letting most heat transfer go to the sample during calorimetry work

Crookes Radiometer, 2.75" (70mm) Diameter, on Plastic Base Subcategory_Racks and Stands Twelve-slot natural wood buret rackEvacuated 2. 75 inch glass bulb on a plastic base with black and white vanes that spin under light exposure, the classic demonstration of differential radiant heat absorption.