--- product_id: 106180423 title: "DORAMI Orange Solar Power Crookes Radiometer Solar Energy Spinning Vanes Glass Windmill Gift Home Desk Decoration" brand: "dorami" price: "$60.01" currency: USD in_stock: true reviews_count: 8 url: https://www.desertcart.us/products/106180423-dorami-orange-solar-power-crookes-radiometer-solar-energy-spinning-vanes store_origin: US region: United States of America --- # Light intensity controls speed Vacuum glass bulb powers rotation 4 precision spinning vanes DORAMI Orange Solar Power Crookes Radiometer Solar Energy Spinning Vanes Glass Windmill Gift Home Desk Decoration **Brand:** dorami **Price:** $60.01 **Availability:** ✅ In Stock ## Summary > ☀️ Spin into brilliance—where light meets art and science! ## Quick Answers - **What is this?** DORAMI Orange Solar Power Crookes Radiometer Solar Energy Spinning Vanes Glass Windmill Gift Home Desk Decoration by dorami - **How much does it cost?** $60.01 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/106180423-dorami-orange-solar-power-crookes-radiometer-solar-energy-spinning-vanes) ## Best For - dorami enthusiasts ## Why This Product - Trusted dorami brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Sun-Powered Kinetic Art:** Harness natural & artificial light to mesmerize your space with dynamic motion. - • **Gift a Symbol of Connection:** A thoughtful, science-inspired gift that embodies energy, emotion, and timeless bonds. - • **Handcrafted Crystal Clarity:** Exquisitely handmade from premium glass for a sleek, modern aesthetic. - • **Effortless Energy, Endless Spin:** No batteries or plugs—just pure light-driven rotation that captivates. - • **Versatile Desk & Decor Statement:** Perfect for offices, living rooms, or classrooms to spark curiosity and style. ## Overview This Orange Solar Power Radiometer features a vacuum glass bulb with four spinning vanes that rotate faster with stronger light exposure. Handmade from high-quality crystal-clear glass, it requires no external power source and serves as both a captivating desk decoration and an educational physics tool demonstrating principles like light refraction and air friction. ## Description Orange Solar Power Radiometer Crookes Solar Energy Spinning Vanes Windmill Gift Home Desk Decoration ## Features - How it works - The glass Radiometer is made of a vacuum glass bulb. There is a rotating shaft and four blades inside. When it is exposed to sunlight, artificial light, or infrared radiation, its leaves will rotate. The stronger the light, the faster it rotates. - Exquisitely designed - Handmade from high-quality glass. Crystal clear, small and exquisite. It needs to be placed on a flat surface to prevent shattering. - The best decoration - It is suitable for occasions such as offices, living rooms, bedrooms, classrooms, study rooms, parties, etc. Place it on a desktop or windowsill, and as long as there is sufficient light, it can rotate continuously without requiring any other energy. - Creative Gift - Giving it as a gift to our family, friends, colleagues, and leaders is perfect. As long as there is light, it can rotate continuously, just like our emotions. As long as we treat them sincerely, friendship can be eternal. - Physics teaching tools - their formation can explain many physics principles. For example, the principle of refraction of light, the principle of air friction, the principle of vacuum propagation of light, the principle of uneven heating generating power, and so on. ## Images ![DORAMI Orange Solar Power Crookes Radiometer Solar Energy Spinning Vanes Glass Windmill Gift Home Desk Decoration - Image 1](https://m.media-amazon.com/images/I/614rIkz-MgL.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Perfect functioning and arrived intact *by M***B on July 2, 2021* The packaging for the radiometer was very adequate to get such a fragile device to me. It is glass and it has to maintain a partial vacuum inside to work properly so delivery was a concern.This Crooke's Radiometer was originally invented as a physics device and does what it was intended to do. It was intended to measure the power of the light incident on the vanes. Several people commented in reviews that it didn't spin in the light of their common lamp, and that is expected. It would take a strong directed household spot light to focus enough photons on the vanes.If you put the device in any full sunlight it should spin very fast. Normal sunlight is imparting much more energy than my house lamp. Thus sunlight is typically required to take advantage of this physics toy.I have another radiometer made of plastic which spins slower in the same sunlight. I believe this due to that plastic radiometer not passing as much light radiation to the vanes. The glass device passes more of the light. And probably has a better balance of vacuum. The vacuum inside has to have a partial atmosphere to work best.You'll note the spin direction shows the darker side of the vane paddles are pushed away from the light source, which confirms the principle that the absorption of energy and subsequent passing of heat energy to the air molecules inside the device is the cause of the spinning. It does not spin because of the impact of photons because if it did, the lighter side of the paddles would be pushed away and the device would spin in the opposite direction, as more photos would be reflected by the lighter side of the vane's paddles. ### ⭐⭐⭐⭐⭐ Works like a charm! *by D***R on October 8, 2020* Got it yesterday, and yesterday we had a variety of weather, so here's my experience:1) In direct sunlight, it "whir spins". I don't mean it makes sound, but it's moving so fast it's just a blur.2) In indirect sunlight, but still a bright day: steady spin, but not real fast. Maybe one rotation every second or second and a half. But it keeps it up.3) Cloudy daylight: sits there like it's waiting for a bus. Maybe twitches a little occasionally, but no rotation whatsoever.So, there you have it. It actually works better than I had hoped, and so I give this a full five star thumbs up. The colored glass makes for an attractive piece, and I could see giving one of these to just about any science-minded person. The fact that it doesn't spin on a cloudy day is more than compensated for by its behavior in direct sunlight, where it spins so fast that in an earlier age you might have thought it was possessed by demons. You can think that now, too, if you want, but it probably isn't actually true. ### ⭐⭐⭐⭐⭐ These are priceless *by D***N on December 6, 2024* The best science gift ever. I'm 70 and I still love them. I've had at least 4 over the years. ## Frequently Bought Together - DORAMI Orange Solar Power Radiometer Crookes Solar Energy Spinning Vanes windmill Gift Home Desk Decoration - DORAMI Spaceship Solar Power Radiometer Sun Light Energy Spinning Vanes Glass Windmill Gift Home Desk Decoration - DjuiinoStar High Performance Gyroscope (Solid Stainless Steel Rotor): Initial Speed 8,000 rpm, Robust and Stable; Provides a Very Good Gaming Experience; Science Equipment DG-5PRO-01 --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.us/products/106180423-dorami-orange-solar-power-crookes-radiometer-solar-energy-spinning-vanes](https://www.desertcart.us/products/106180423-dorami-orange-solar-power-crookes-radiometer-solar-energy-spinning-vanes) --- *Product available on Desertcart United States of America* *Store origin: US* *Last updated: 2026-08-03*