Bortivier Light 20.5Cm Glass Windmill Solar Powered Crookes Radiometer Mill/Educational Teaching Study Tool/Office Home Decoration
£17.65
Product Description
Inside the bulb, on a low friction spindle, is a rotor with several (usually four) vertical metal vanes spaced equally around the . 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 shine on the globe the faster the vanes rotates. Magnificent Glass Radiometer, makes a great gift for who have everything. Subject: Physics All made of glass.This physical and technical miracle shows you in a clear way how sunlight is converted to .Place near a window or under incandescent light and watch as the vanes rotate., Weight: 0.48060773116 pounds, Manufacturer: Bortivier
Bortivier Light 20.5Cm Glass Windmill Solar Powered Crookes Radiometer Mill/Educational Teaching Study Tool/Office Home Decoration
Inside the bulb, on a low friction spindle, is a rotor with several (usually four) vertical metal vanes spaced equally around the . 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 shine on the globe the faster the vanes rotates. Magnificent Glass Radiometer, makes a great gift for who have everything. Subject: Physics All made of glass.This physical and technical miracle shows you in a clear way how sunlight is converted to .Place near a window or under incandescent light and watch as the vanes rotate., Weight: 0.48060773116 pounds, Manufacturer: Bortivier
Delivery, Returns & Refunds
Delivery
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Returns
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Refunds
Sellers have to offer a refund for certain items only if they are faulty, such as: Personalised items and custom-made items, Perishable items, Newspapers and magazines, Unwrapped CDs DVDs and computer software. If you used your PayPal balance or bank account to fund the original payment, the refunded money will go back to your PayPal account balance. If you used a credit or debit card to fund the original payment, the refunded money will go back to your card. The seller will effect the refund within three working days but it may take up to 30 days for Paypal to process the transfer. For payments funded partially by a card and partially by your balance/bank, the money taken from your card will go back to your card and the remainder will return to your PayPal balance.