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DORAMI

DORAMI Blue Solar Power Crookes Radiometer Glass Spinning Vanes Windmill Desk Decoration Small

DORAMI Blue Solar Power Crookes Radiometer Glass Spinning Vanes Windmill Desk Decoration Small

Rs. 3,439.00
Rs. 0.00 Rs. 3,439.00
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Product features

Materials and care

[Generic] High-boron glass bulb, glass support rod, low-friction metal spindle, four bi-faced aluminum vanes (coated with black thermal absorption material on one side and silver on the reverse).

  • Directly Sourced From USA
  • Premium Quality & Authenticity
  • 7 Day Easy Return
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Product Description

The DORAMI Blue Solar Power Crookes Radiometer is a fascinating and elegant scientific showpiece that brings the wonders of physics right to your desk. Handcrafted from high-quality tinted blue glass, this delicate ornament contains a partial vacuum glass bulb housing a lightweight spindle with four spinning vanes. When exposed to direct sunlight, artificial incandescent light, or infrared radiation, the vanes automatically rotate without any batteries or electricity. The dark side of each vane absorbs heat, creating a thermal force that propels the spindle; the brighter the light source, the faster it spins. It serves as an engaging educational tool to demonstrate thermodynamics and solar energy conversion. Perfect for home decor, office tables, bookshelves, or a sunny window sill, this unique physics toy is designed for older children and adults who appreciate sophisticated, interactive design.

FAQ

Q1. How does a Crookes radiometer work?

Ans: A Crookes radiometer contains a partial vacuum with four vanes inside a glass bulb. Each vane is dark on one side and light on the other. When light hits the vanes, the dark sides absorb more heat, causing nearby gas molecules to heat up and push against the vanes, making them rotate.

Q2. Does the radiometer require batteries to operate?

Ans: No, it does not require any batteries, electricity, or external power sources. It is entirely powered by light energy, meaning it will spin automatically whenever it is exposed to sufficient sunlight or strong artificial light.

Q3. Will this radiometer work under LED or fluorescent lights?

Ans: It may not spin well under modern LED or fluorescent office lights because they do not emit enough heat or infrared radiation. For the best performance, place it in direct natural sunlight or under a traditional incandescent light bulb.

Q4. Is this DORAMI radiometer an authentic imported product available in India?

Ans: Yes, this is an authentic DORAMI product imported directly from the USA. Rudra Retails sources these unique scientific decorations directly from genuine global suppliers to ensure Indian buyers receive original quality.

Q5. Is this glass solar windmill suitable for young children?

Ans: Due to its delicate, hand-blown glass construction, this product is highly fragile. It is recommended as a decorative item or educational display for older children aged fourteen and up, as well as adults.