4 Blades Rotating Glass Windmill Solar Powered a
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This magnificent glass radiometer, invented by Sir William Crookes in 1873, demonstrates the conversion of light into energy. Place it near a window or under incandescent light to watch the four vanes rotate, with the dark sides retreating from the light source. Made entirely of glass, it stands 8 inches tall with a 3.5-inch globe, making it an educational tool and a unique gift.
add_circle The Upside
- check Fascinating demonstration of light energy conversion
- check Elegant glass design suitable for display
- check No batteries or power source required
remove_circle The Downside
- close Requires direct light source to operate
- close Fragile glass construction
- close Limited practical use beyond decoration and education
Specifications & features
Key features
- check_circle 4-blade rotating vanes with polished and black sides
- check_circle Partial vacuum glass bulb for low friction rotation
- check_circle Operates on sunlight, artificial light, or infrared radiation
- check_circle Globe diameter 3.5 inches, total height 8 inches
- check_circle Educational tool demonstrating light-to-energy conversion
Specifications
Globe Diameter
3.5 inches
Material
Glass
Number of Blades
4
Power Source
Light (sunlight or incandescent)
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