Vendor Profile
CHATANI SANGYO
| Address | #5F OG Bldg. 4-1-43 miyahara Osaka-shi Yodogawa-ku Osaka, JAPAN ZIP:532-0003 |
|---|---|
| Representative Name | Tsuyoshi Funoki |
| Annual Revenue | JPY 20,100,000,000 |
| No. of Employees | 127 |
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Object/Ornament Fun Science Interior Item Single
SD item code:7054887
| Detail | Price & Quantity | |||
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| This product is currently unavailable | ||||
| Shipping Date |
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About 1 week
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| Dimensions |
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Product size: H 180 x W 60 x D 60 mm
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| Specifications |
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Country of manufacture: China
Material / component: Borosilicate glass, iron, etc.
Package: Individual box
Product tag: None
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Description
| Fun Science Radiometer Single Spinning on the windowsill. If you put it on the windowsill on a sunny day, the wings inside will spin around lightly. The principle is complicated, but it looks very light. Principle of spinning One side of the feather inside the glass is painted black. When exposed to light, the black surface of the feather absorbs the light and becomes hotter. Molecular activity of the gas near the surface becomes active, and the pressure due to molecular collisions on the surface of the vane differs from that on the other surface, causing the vane to rotate toward the unpainted surface. (The inside of the glass sphere is in a semi-vacuum state.) |
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| Shipping Method | Estimated Arrival |
|---|---|
| Sea Mail | From Oct.22nd 2026 to Dec.24th 2026 |
| Air Mail | From Oct.6th 2026 to Oct.8th 2026 |
| EMS | From Oct.5th 2026 to Oct.8th 2026 |
| Pantos Express | From Oct.7th 2026 to Oct.12th 2026 |
| DHL | From Oct.5th 2026 to Oct.7th 2026 |
| UPS | From Oct.5th 2026 to Oct.7th 2026 |
| FedEx | From Oct.5th 2026 to Oct.7th 2026 |
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Some trading conditions may be applicable only in Japan. |
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Fun ScienceOther items from this category:
Spinning on the windowsill. If you put it on the windowsill on a sunny day, the wings inside will spin around lightly.
The principle is complicated, but it looks very light.
Principle of spinning
One side of the feather inside the glass is painted black. When exposed to light, the black surface of the feather absorbs the light and becomes hotter. Molecular activity of the gas near the surface becomes active, and the pressure due to molecular collisions on the surface of the vane differs from that on the other surface, causing the vane to rotate toward the unpainted surface. (The inside of the glass sphere is in a semi-vacuum state.)