Radiometer, Case Of 24

Details:

This simple apparatus demonstrates radiant heat., Vanes on the rotating shaft are light on one side but dark on the other., 04_Bodytext: when the dark sides of the vanes absorb light, the vanes turn., 02_Bulletpoint: diameter: 3" | height: 5" | vanes turn when dark sides absorb heat, radiometer, cat. No.: 470148-644, Final sap desc link: 4906936, sap description status: ready, this simple apparatus demonstrates radiant heat., Vanes on the rotating shaft are light on one side but dark on the other., 04_Bodytext: when the dark sides of the vanes absorb light, the vanes turn., 02_Bulletpoint: diameter: 3" | height: 5" | vanes turn when dark sides absorb heat, final sap desc link: 4906936, sap description status: ready