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Size: 1644
Comment:
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Size: 2038
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| Leslie's cube (named after Sir John Leslie who experimented with radiant heat in 1804) consists of a cubical vessel with different sides - one of highly polished metal, the other two painted black and white, and another side painted with aluminum. When the cube is filled with boiling water, the radiation is greatest from the black side, and negligible from the shiny side. | Leslie's cube (named after Sir John Leslie who experimented with radiant heat in 1804) consists of a cubical vessel with different sides - one of brass, the other two painted black and white, and another side painted with aluminum. When the cube is filled with boiling water, the radiation is greatest from the black side, and negligible from the shiny side. |
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| Insert description of demonstration, how is the demonstration preformed. | A Leslie's cube has four different surface areas. One side is black, one is white, one is aluminum and the last one is brass. Pour heat water into the cube. A reading of the heat radiation from the surfaces is made using a thermopile and an electrometer. You can show student that different surface can radiate the heat in different rate by using a thermopile and an electrometer. You can also show student by put another filter in between the thermopile and the cube to show variation. |
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| [Insert a back link to main topic list] | [:FirstLaw:Heat and the First Law] |
Leslie cube, 4B40.30
Location:
Cabinet: Thermodynamics Cabinet
Bay: (A4)
Shelf: #3
(attachment photo showing the fully set up demonstration)
Description:
Leslie's cube (named after Sir John Leslie who experimented with radiant heat in 1804) consists of a cubical vessel with different sides - one of brass, the other two painted black and white, and another side painted with aluminum. When the cube is filled with boiling water, the radiation is greatest from the black side, and negligible from the shiny side.
Equipment |
Location |
ID Number |
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Leslie cube |
[:ThermoCabinetBayA4: TD, A4, Shelf #3] |
4B40.30 |
Thermopile horn |
[:ThermoCabinetBayA4: TD, A4, Shelf #3] |
|
Rock salt and various filters |
[:ThermoCabinetBayA4: TD, A4, Shelf #3] |
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Hot water |
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Electric wires |
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Electrometer |
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Setup:
- Make sure that you have a boiling water.
- Hook the electric wires between the electrometer and a thermopile horn.
Cautions, Warnings, or Safety Concerns:
- Beware of hot water
Demonstration:
A Leslie's cube has four different surface areas. One side is black, one is white, one is aluminum and the last one is brass. Pour heat water into the cube. A reading of the heat radiation from the surfaces is made using a thermopile and an electrometer. You can show student that different surface can radiate the heat in different rate by using a thermopile and an electrometer. You can also show student by put another filter in between the thermopile and the cube to show variation.
attachment other photos |
attachment other photos |
attachment other photos |
attachment other photos |
References:
- List any references
[:FirstLaw:Heat and the First Law]
[:Demonstrations:Demonstrations]
[:Instructional:Home]