{"product_id":"crookes-radiometer-solar-light-windmill-glass","title":"Crookes Radiometer Solar Light Windmill – Glass Science Gift","description":"\n\u003ch2\u003eCrookes Radiometer – Watch Sunlight Come to Life\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eCrookes Radiometer\u003c\/strong\u003e is a captivating glass scientific instrument that spins its four vanes using nothing but the power of light. Place it on a sunny windowsill or desk and watch the iconic black-and-white paddle wheel rotate — faster as the light intensifies, slower as it dims. It's a brilliant blend of physics, art, and home décor that sparks curiosity in all ages.\u003c\/p\u003e\n\n\u003cp\u003eWhether you're a science enthusiast, a curious mind, or simply looking for a unique decorative accent, this radiometer is an effortless conversation starter and a visually stunning gift.\u003c\/p\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePowered by Light:\u003c\/strong\u003e The vanes spin automatically in sunlight or under bright artificial light — no batteries or electricity required.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHand-Blown Glass Globe:\u003c\/strong\u003e The clear borosilicate glass globe measures approximately 3.5 inches (8.9 cm) in diameter and stands 8 inches (20 cm) tall, with an overall footprint of 14 cm × 7.5 cm.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eClassic Scientific Design:\u003c\/strong\u003e Four bi-colored vanes (black on one side, reflective silver on the other) suspended on a low-friction pivot inside a near-vacuum glass chamber.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eVersatile Display Piece:\u003c\/strong\u003e Perfect for home offices, windowsills, classrooms, science labs, or as a thoughtful gift for curious minds.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEducational Appeal:\u003c\/strong\u003e Demonstrates the fascinating principles of light radiation and thermodynamics in a clear, visual way.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDurable Construction:\u003c\/strong\u003e Made from quality glass for a timeless, elegant appearance.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eProduct Specifications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Glass\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDimensions:\u003c\/strong\u003e 14 cm × 7.5 cm (approx. 5.5\" × 3\")\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eGlobe Diameter:\u003c\/strong\u003e 3.5 inches (8.9 cm)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTotal Height:\u003c\/strong\u003e 8 inches (20 cm)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eColor:\u003c\/strong\u003e Clear glass with black\/silver vanes\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePower Source:\u003c\/strong\u003e Light (solar or artificial)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Qme\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow It Works\u003c\/h3\u003e\n\u003cp\u003eThe Crookes Radiometer operates on a fascinating physical principle: light striking the darker side of each vane transfers more energy as heat than to the lighter, reflective side. This creates a tiny pressure differential inside the near-vacuum sealed glass globe, causing the vane assembly to spin. The brighter the light, the faster the spin — a mesmerizing, real-time demonstration of light energy in action.\u003c\/p\u003e\n\n\u003cp\u003eTo learn more about the science of light and radiation, visit the \u003ca href=\"https:\/\/science.nasa.gov\/ems\/01_intro\" target=\"_blank\" rel=\"noopener noreferrer\"\u003eNASA Science: Electromagnetic Spectrum resource\u003c\/a\u003e for an in-depth look at how light energy works.\u003c\/p\u003e\n\n\u003ch3\u003eThe Perfect Gift\u003c\/h3\u003e\n\u003cp\u003eThis Crookes Radiometer makes a wonderful gift for science lovers, educators, students, or anyone who appreciates the beauty of physics made visible. It's equally at home as desk décor in a home office or as an educational tool in a classroom setting.\u003c\/p\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003ch4\u003eQ: How does the Crookes Radiometer spin without any power source?\u003c\/h4\u003e\n\u003cp\u003eA: The Crookes Radiometer spins using the energy from light — natural sunlight or a bright artificial lamp. Inside the sealed glass globe, the four vanes have one black (heat-absorbing) side and one reflective silver side. When light hits the vanes, the difference in heat on each side creates a pressure differential in the near-vacuum environment, causing the vanes to rotate. The stronger the light source, the faster the radiometer spins.\u003c\/p\u003e\n\n\u003ch4\u003eQ: What size is the Crookes Radiometer glass globe?\u003c\/h4\u003e\n\u003cp\u003eA: The glass globe measures approximately 3.5 inches (8.9 cm) in diameter, and the total unit stands about 8 inches (20 cm) tall. The overall base footprint is 14 cm × 7.5 cm, making it a compact yet striking display piece for any desk or windowsill.\u003c\/p\u003e\n\n\u003ch4\u003eQ: Is the Crookes Radiometer suitable as a gift or educational tool?\u003c\/h4\u003e\n\u003cp\u003eA: Absolutely! The Crookes Radiometer is a fantastic gift for science enthusiasts, students, teachers, and curious minds of all ages. It visually demonstrates how sunlight is converted into motion energy, making it both an engaging educational tool and a beautiful decorative accent for homes, offices, and classrooms.\u003c\/p\u003e\n\n\u003ch4\u003eQ: What material is the Crookes Radiometer made from?\u003c\/h4\u003e\n\u003cp\u003eA: The Crookes Radiometer is crafted from quality glass, giving it a clear, elegant appearance. The glass globe is sealed and contains a near-vacuum interior to allow the vanes to spin freely with minimal air resistance.\u003c\/p\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"How does the Crookes Radiometer spin without any power source?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"The Crookes Radiometer spins using the energy from light — natural sunlight or a bright artificial lamp. Inside the sealed glass globe, the four vanes have one black (heat-absorbing) side and one reflective silver side. When light hits the vanes, the difference in heat on each side creates a pressure differential in the near-vacuum environment, causing the vanes to rotate. The stronger the light source, the faster the radiometer spins.\"}}, {\"@type\": \"Question\", \"name\": \"What size is the Crookes Radiometer glass globe?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"The glass globe measures approximately 3.5 inches (8.9 cm) in diameter, and the total unit stands about 8 inches (20 cm) tall. The overall base footprint is 14 cm × 7.5 cm, making it a compact yet striking display piece for any desk or windowsill.\"}}, {\"@type\": \"Question\", \"name\": \"Is the Crookes Radiometer suitable as a gift or educational tool?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Absolutely! The Crookes Radiometer is a fantastic gift for science enthusiasts, students, teachers, and curious minds of all ages. It visually demonstrates how sunlight is converted into motion energy, making it both an engaging educational tool and a beautiful decorative accent for homes, offices, and classrooms.\"}}, {\"@type\": \"Question\", \"name\": \"What material is the Crookes Radiometer made from?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"The Crookes Radiometer is crafted from quality glass, giving it a clear, elegant appearance. The glass globe is sealed and contains a near-vacuum interior to allow the vanes to spin freely with minimal air resistance.\"}}]}\u003c\/script\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"BreadcrumbList\", \"itemListElement\": [{\"@type\": \"ListItem\", \"position\": 1, \"name\": \"Home\", \"item\": \"https:\/\/vpggdm-rp.myshopify.com\/\"}, {\"@type\": \"ListItem\", \"position\": 2, \"name\": \"Home \u0026 Living\", \"item\": \"https:\/\/vpggdm-rp.myshopify.com\/collections\/home-living\"}, {\"@type\": \"ListItem\", \"position\": 3, \"name\": \"Crookes Radiometer Solar Light Windmill – Glass Science Gift\", \"item\": \"https:\/\/vpggdm-rp.myshopify.com\/products\/crookes-radiometer-solar-light-windmill-glass\"}]}\u003c\/script\u003e","brand":"Qme","offers":[{"title":"1pcs","offer_id":49709508526294,"sku":"14:29#1pcs","price":39.68,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0827\/5243\/8486\/files\/S95b7e80dbed640388e6e8763ffcfd9bbe.webp?v=1785204033","url":"https:\/\/qmeboost.com\/products\/crookes-radiometer-solar-light-windmill-glass","provider":"Qme","version":"1.0","type":"link"}