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4D20.10 - Crookes' Radiometer

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​4D20.10 - Crookes' Radiometer

Preview
SelectSelected
Title4D20.10 - Crookes' Radiometer
Objective

Demonstrate that different colored surfaces heat differently. ​

StatusAvailable
Assembly Instructions

Instructions
The Crookes' radiometer is a rotator with vanes on it, placed on a free shaft in a glass bulb which has not been evacuated. The vanes are silver on one side and black on the other. Place the radiometer in the object area of the lantern slide projector. When the vanes are illuminated, the assembly rotates away from the black sides since this surface heats up more so the molecules colliding with it are given a higher recoil velocity, and thus impart more momentum to the vanes.
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Setup Time5
Operation Time
Preview Time2
Operation Instructions
ExportableNo
Demo on DimeNo
PIRA 200Yes
Export Instructions (if different)
HazardsNone
Analysis/Information
Category4 Thermodynamics
Subcategory4D - Kinetic Theory
Keywordsradiation, antique radiometer
Construction Information
 
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QuantityUse SHIFT+ENTER to open the menu (new window).
  
Crookes' radiometer
1
light source - white light with on-off switch
1
meter stick (optional)
1