{"id":"DCD-10001600604","sku":"DCD-10001600604","display_title":"Glass Radiometer with Base","title":"Glass Crooke Radiometer Transparent Spherical Glass Radiometer with Base Compact Vacuum Chamber Thermal Vane for Kids, Physics Enthusiasts","description":"Product Identity: This glass Crooke radiometer features a transparent spherical chamber, slender stemming, and circular base, crafted as a traditional thermal vane for observing light-driven motion.\nCore Function: Powered by light energy, the four-bladed rotor inside the near-vacuum chamber spins when uncover to light, and reverses direction, serving as an interactive solar radiometer for hands-on learning.\nDesign Features: Built with fully transparent glass construction and contrasting black and light-colored faces, this desktop display ornament offers clear visibility of the rotor’s movement from each angle.\nKey Features: Compact in size with an overall height of 138 mm, a 75 75 mm bulb diameter diameter, and a 65 mm base diameter, this delicate instrument fits neatly on desks, shelves, or study tables without taking up much space.\nIntended Use: Designed as a science demonstration instrument for children and adults alike, it brings physics concepts while adding a decorative, conversation-starting touch to any workspace or learning area.\n\nThis glass Crooke radiometer is a beautifully crafted classic thermal vane that combines scientific with elegant, minimalist design. Featuring a transparent spherical chamber mounted on a slender glass stemming and a stable circular base, the entire piece is constructed from clear glass to ensure unobstruct visibility of the internal mechanism. Inside the near-vacuum chamber sits a four-bladed rotor with contrasting black and light-colored faces, a distinctive design that makes the movement easy to follow. At it rates, this solar radiometer demonstrates the relationship between light and heat energy in a visually captivating way. When uncover to light, the rotor begins to rotate the darker areas absorb more heat energy, creating a tiny temperature difference that drives rotation.\n\nOption: Pure Clear","category":{"slug":"hobbies","label":"Hobbies & Collectibles","google_path":"Arts & Entertainment > Hobbies & Creative Arts"},"product_category":"Arts & Entertainment > Hobbies & Creative Arts","brand":"SuntekStore","condition":"new","price":"26.49 USD","price_amount":"26.49","currency":"USD","price_valid_until":"2026-10-31","tax":"US sales tax calculated at checkout (prices exclude tax)","availability":"in_stock","inventory_quantity":20,"max_quantity_per_order":10,"shipping":"US:ALL:Standard Shipping:11-21:0.00 USD","delivery_days":{"min":11,"max":21,"unit":"calendar_days_from_order","handling_business_days_max":4},"estimated_delivery":{"if_ordered_on":"2026-10-01","earliest":"2026-10-12","latest":"2026-10-22"},"ships_to":["US"],"shipping_cost":"0.00 USD","return_window_days":30,"return_policy":{"window_days":30,"window_starts":"delivery","condition":"unused, in original packaging","return_shipping_paid_by":"customer (we pay if the item is damaged, defective or not as described)","refund_method":"original payment method","refund_within_business_days_of_receipt":5,"how":"https://suntekstore.com/contact/ with the order number","url":"https://suntekstore.com/returns/"},"package_dimensions_cm":[24.0,21.03,10.370000000000001],"weight_g":440.0,"material":"High Borosilicate Glass","package_includes":"Radiometer ×1","product_dimensions_cm":[8.0,8.0,21.5],"specifications":[{"name":"Structure","value":"Transparent spherical chamber, transparent stem, circular transparent base"},{"name":"Rotor","value":"Four-bladed, black and light-colored faces"},{"name":"Chamber","value":"Close to vacuum"},{"name":"Function","value":"Rotates under light, can rotate in opposite direction with cool air"}],"image_link":"https://suntekstore-img.sfo3.digitaloceanspaces.com/p/f7/f726c01dd02706867b71ad15ee7e0fd2fb9e299d.jpg","additional_image_link":["https://suntekstore-img.sfo3.digitaloceanspaces.com/p/4f/4fba578cec652b53dbfa8d4a69856b7cb04ffac6.jpg","https://suntekstore-img.sfo3.digitaloceanspaces.com/p/56/5617f2e649c71913821b5df8bc17d7482035084c.jpg","https://suntekstore-img.sfo3.digitaloceanspaces.com/p/9c/9c7649418468157e54718640638c2532367ac5d1.jpg","https://suntekstore-img.sfo3.digitaloceanspaces.com/p/05/059dcc0f852f3b52890c124e4e7984d397118123.jpg"],"thumbnail_link":null,"link":"https://suntekstore.com/p/DCD-10001600604/","markdown_url":"https://suntekstore.com/p/DCD-10001600604.md","json_url":"https://suntekstore.com/products/DCD-10001600604.json","buy_url":"https://suntekstore.com/buy/DCD-10001600604?qty=1","prop65_warning":null}