The Crookes radiometer, also known as a light mill, consists of an airtight glass bulb, containing a partial vacuum. Inside are a set of vanes which are mounted on a spindle. The vanes rotate when exposed to light, with faster rotation for more intense light, providing a quantitative measurement of electromagnetic radiation intensity. The reason for the rotation was a cause of much in the ten years following the invention of the device, but in 1879 the currently accepted explanation for the rotation was published. Today the device is mainly used in physics education as a demonstration of a heat engine run by light energy.
Crookes Radiometer / Solar Radiometer / Sunshine Windmill
We have size of Dia75x H130cm , Dia90x H215cm (Most popular size)
We also have size of Dia60x H110cm, Dia60x H190cm, Dia80x H145cm,
Besides above, we can also OEM any Diameter/Height according to customer's special demand.
Blue, Green, Amber for the Ball or/and for the stem
Sample Lead Time
5-7 days (For typical sizes, we usually have stock. PLS confirm with our sales)
Production Lead Time
Usually we do OEM against order, lead time 15-25 days, big order depend on Qty.
University/School Education, Experiment, Physics Class Demonstrate, Hobbies, Art & Collectible,Office, Desktop, Home Decoration, Window Displays,Birthday, Valentine, Wedding, Christmas, Parties, Festival, Holiday Decoration ,Easter, Thanksgiving, Christmas, New Year, Father's Day, Mother’s days,Valentine's Day, Holiday, thank-you, business gift, etc anywhere can use it.
1. Most of our company’s products are pure handmade. It’s lampworking.
2. Products are made of non-toxic harmless components. Our products are quite safe.
3. We have our own factory so delivery could be within agreed time. We are punctual and trustworthy.
4. Our product line is rich and the output is big. Support to meet the different needs of different customers.
5. New product design development, production and export of foreign enterprises. Advanced production technology, innovative design.
6. The product of our company is a new technology products, timing, and forecast the weather and temperature display. The technology is advanced.
7. Our company insists on independent development and production, it is helpful for the staff to be familiar with the products, improve the export profits, understand the market changes.
8. The glass we use is borosilicate glass. It’s low expansion rate, HIGH temperature, HIGH strength, HIGH hardness, HIGH transmittance and HIGH chemical-stability-characteristics make it become the good performance glass.
Packaging & Shipping
Packaging & Shipping
Step 1: Styrofoam (Different mould of styrofoam fits well to the product.)
Step 2: Each piece into Inner box (White Box, Brown box, Gift Box according to customer's requirement)
Step 3: Outer Carton (Usually 24pcs into one carton)
Step 4: Relevant warning shipping mark (Fragile, Upward, etc.)
By air, sea, EMS, Fd Express, etc. Any means are available.
1. Label printing--We can print labels on the bottles according to customers’ requirements.
2. Surface handing--Screen printing,frosted,hot stamping,slik printing, acid etc,decal etc.
3. Packing--Standard export carton and pallet,or packed as you need.
4. Customer test--Ensure products in super quality and good condition.
5. Certification-- FDA SGS etc can be passed.
6. Brand name--OEM&ODM are welcome.
7. Quick reply-- We will reply your inquiry in 24 working hours.
Manufacture all kinds of Glass products, such as Candle Holder, Glass Crafts ,Candles ,Crystal Crafts, Glass candle holder, candle holder, Mosaic item, LED candle holder, Lantern, Lamp, Shade, Votive, Tealight, Ceramic Candle Holder, Glass Vase, Glassware item, Antique Imitation Crafts, Painting & Calligraphy, and other glass utensils, there is always a right for you. Our product is environmental protection product, nontoxic, conforms to European quality standard. Produced products are high quality products, export to many countries such as Germany, the United States, France, England, Scotland, Ireland, Spain, Japan, etc. The company adhering to the "quality first, reputation first, innovation endless" business philosophy, to build their brand. Tell us your needs, we will serve you wholeheartedly!
1. Are you the manufacturer or the trading company?
We are the direct manufacturer. 2. Why we choose you? what is your strength? We are experienced and professional, we offer high quality products, perfect services and competitive price. 3. What is your delivery time? Normally, after your deposit, we could finish the production within 7-30days. 4. What is your payment methods? T/T, L/C, Paypal, West Union, Cash 5. About the samples terms: The samples cost and freight need to be covered by you. We will refund when you place the formal order according to sample cost and the total amount of the order. 6. Can you customize the products as per our requests? Yes, we offer OEM and ODM services. a. Do Logo on the product b. Customized products housing c. Customized packing. 7. Any Inquiries will be replied within 24 hours We could communicate with each other by email, skype and telephone. 8. After Sale Service: a. All products will have been strictly Quality Control in workshop before packing. b. All products will be well packed before shipping. c. All our products have 1 year warranty and we sure the product will be free from maintenance within warranty period. 9. Shipping We have strong cooperation with DHL, TNT, UPS, FedEx , EMS, China Air Post and many Forwarder Agency. We also accept that your pointed forwarders.
For any questions or assistance, please do not hesitate to contact with us.