Crookes Radiometer, 2.75" (70mm) Diameter, on Plastic Base Subcategory_Racks and Stands dimensioned as the matched replacement

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

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

NPN transistor in a protective enclosure with labeled base

Engineered to expose both AC and DC generation on a single hand-cranked apparatus

this 2-input XOR gate module shows HI and LO output states with red and green LEDs and a printed reference

Crookes Radiometer, 2.75" (70mm) Diameter, on Plastic Base Subcategory_Racks and Stands dimensioned as the matched replacementEvacuated 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.