DORAMI
DORAMI Large Transparent Solar Power Crookes Radiometer Sun Light Energy Spinning Vanes Glass Windmill Physics Desk Decoration
DORAMI Large Transparent Solar Power Crookes Radiometer Sun Light Energy Spinning Vanes Glass Windmill Physics Desk Decoration
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Product features
Product features
Materials and care
Materials and care
[Generic] High-quality borosilicate glass bulb, internal metal spindle, four carbon-coated and reflective aluminum vanes, partial vacuum atmosphere.
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- Directly Sourced From USA
- Premium Quality & Authenticity
- 7 Day Easy Return
Product Description
The DORAMI Large Transparent Solar Power Crookes Radiometer is a captivating science-based decorative piece that beautifully demonstrates the power of light energy. This exquisitely crafted, handmade glass windmill features a partial vacuum bulb housing four delicate rotating vanes. When placed under direct sunlight, artificial lamps, or infrared radiation, the dark and light sides of the vanes absorb energy differently, causing them to spin in silent, hypnotic motion. The stronger the light source, the faster it rotates. It serves as an exceptional educational tool for physics students, teachers, and science enthusiasts to visualize thermodynamics and solar energy principles in real-time. Designed primarily for adults and older children, this elegant, crystal-clear glass sculpture adds a sophisticated, intellectual touch to any office desk, living room shelf, or classroom. This conversation-starting device requires absolutely no batteries, plugs, or external power sources, making it a sustainable, mesmerizing testament to classic scientific discovery.
FAQ
Q1. How does a Crookes radiometer work?
Ans: A Crookes radiometer works when light hits the four internal vanes inside the partial vacuum bulb. The dark sides absorb more heat than the light sides, creating a temperature differential that causes gas molecules to push the vanes, creating a spinning motion.
Q2. Does this radiometer require batteries or electricity?
Ans: No, this device is completely solar-powered and light-driven. It does not require any batteries, charging cables, or plugs to operate, running entirely on ambient light energy.
Q3. Can it spin under indoor LED or fluorescent lights?
Ans: Yes, it can spin under strong artificial light sources, including bright incandescent bulbs and high-intensity lamps. However, it operates most efficiently and rapidly under direct, natural sunlight.
Q4. Is this DORAMI Radiometer an authentic USA import available in India?
Ans: Yes, this is a 100% authentic DORAMI product sourced directly from the USA. Rudra Retails ensures genuine imports, delivering premium, internationally sourced science and decor pieces directly to your doorstep.
Q5. What is the recommended age group for this science toy?
Ans: Due to its delicate glass construction and fragile nature, it is recommended for adults, physics hobbyists, and older children aged 14 and above. It should be handled with care and kept away from small children.