Radiomètre de Crookes Verre Energie Solaire Lumière Moulin Décoration Maison

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Description

Product Description:
Invented in 1873 by the chemist Sir William Crookes as the by-product of some chemical research, the radiometer is made from a glass bulb from which much of the air has been removed to form a partial vacuum. Inside the bulb, on a low friction spindle, is a rotor with several (usually four) vertical lightweight metal vanes spaced equally around the axis. The vanes are polished or white on one side and black on the other. When exposed to sunlight, artificial light, or infrared radiation (even the heat of a hand nearby can be enough), the vanes turn with no apparent motive power, the dark sides retreating from the radiation source and the light sides advancing. Just place near a window or under a direct incandescent light as the vanes only rotates in light (sunlight or incandescent light). The more light shine on the globe the faster the vanes rotates.

Specification:
Material: Glass
Color: Clear
Base Size: 80mm/3.1"
Height: 205mm/8.1"
Sphere diameter: 90mm/3.5"

Package Included:
1 x Crookes Radiometer

Features:
● Magnificent Glass Radiometer, makes a great gift for the one who have everything.
● All made of glass. Globe is 3.5 inch in diameter and stands 8 inch tall.
● This physical and technical miracle shows you in a clear way how sunlight is converted to energy.
● Place near a window or under incandescent light and watch as the vanes rotate.

Notice:
1.Please allow 1-3mm error due to manual measurement.Pls make sure you do not mind before you bid.
2.The color may have different as the difference display,pls understand.

 

Detail Image

Payment

1.We accept PayPal only.
2.All major credit cards are accepted through secure payment processor PayPal.
3.Payment must be received within 7 business days of auction closing.
4.We ship to your eBay or Paypal address. Please make sure your eBay and Paypal address is correct before you pay.

Shipping

1.We ship to your eBay or Paypal address. Please make sure your eBay and Paypal address is correct before you pay.
2.Items will be shipped within 1-3 business day when we received payment.
3.Delivery time depends on destination and other factors;
4.International buyers please note:
  a.Import duties, taxes and charges are not included in the item price or shipping charges. These charges are buyer’s responsibility. We will try our best to reduce the risk of the custom duties.
  b.Please check with your country's customs office to determine what these additional costs will be prior to buying.

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Le 07-déc.-16 à 11:53:16 Paris, le vendeur a ajouté les informations suivantes :

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• Marque: - Sans Marque/Générique -
• Contents of the package: 1 X Crookes Radiometer
• UPC: 991341821495
• EAN: 0991341821495

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