Scigeek Radiometer Solar Windmill Glass Decorative Office Desk Ornament [Scandinavian Style Gift]

◆A fascinating object found in the science lab!

A radiometer is a laboratory instrument invented by British physicist William Crookes in the 1800s.

Four blades are placed inside a vacuum glass bulb. The blades spin around due to temperature differences caused by sunlight hitting the white and black painted surfaces.

◆For a comfortable lifestyle!

This adorable object spins in the light, creating a cool, refreshing atmosphere.

Its retro feel has made it an incredibly popular interior accessory.

Soak up the sun and enjoy the soothing sight of it spinning around♪

◆An impeller that spins with light and heat!

A classic object whose blades spin with sunlight.

The impeller, which responds to sunlight and heat, including infrared rays, changes its rotation speed in proportion to the intensity of the light.

The glass container is sealed to prevent it from being affected by wind and other elements.

Product Specifications: Material: Glass & Metal Size: Small (Approx. 120 x 70 x 70 mm) Color: White Blades: 4 *Does not respond to fluorescent lights. Responds to sunlight and incandescent light. *In rare cases, the black paint on the metal plate inside the glass bulb may peel off. This does not affect the quality of the product, so please be aware of this in advance.

Fun Item A great gift for students, children, friends, or birthdays! Perfect as a room decoration or science toy. [A Mysterious and Stylish Craft & Ornament]: This classic interior accessory spins when exposed to sunlight by a window or infrared indoor light. [Rotating Principle]: The vacuum glass bulb contains four blades. The blades spin in response to temperature differences, such as sunlight hitting the white and black painted surfaces. [Sensitive to Light Intensity]: The rotation speed varies depending on the light intensity and light source. It spins when exposed to sunlight, incandescent light, or other light sources containing infrared rays (heat rays), but does not react to low-intensity light sources like fluorescent or LED lights. (No charging or batteries required.) Material: Glass + Metal; Body Size: Approx. 130 x 70 x 70 mm; Blades: 4; Use: Interior & Science Lab Equipment; Recommended Ages: 8+. Comfortable Lifestyle: This adorable object spins in the light, creating a cool, refreshing atmosphere. Watching it spin around in the sunlight is soothing.