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Size: 1644
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Size: 2318
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| Deletions are marked like this. | Additions are marked like this. |
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| = Leslie cube, 4B40.30 = | = Leslie's cube, 4B40.30 = |
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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. | Radiation of heat is demonstrated. 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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| ||Leslie cube||[:ThermoCabinetBayA4: TD, A4, Shelf #3]||<:>4B40.30 || | ||Leslie's cube||[:ThermoCabinetBayA4: TD, A4, Shelf #3]||<:>4B40.30 || |
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| 1. Make sure that you have a boiling water. 1. Hook the electric wires between the electrometer and a thermopile horn. |
1. Make sure that you have enough hot water. 1. Connect the electric wires from the electrometer to the thermopile horn. 1. Put the Leslie's cube on the revolving stand at one end of the table. 1. Across the table, put the thermopole horn that connected with the electrometer and try to align the face of the horn to the side of the Leslie's cube. |
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| 1. Beware of hot water | 1. Beware of hot water. |
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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 hot water into the cube. A reading of the heat radiation from the surfaces is made by using a thermopile and an electrometer. You can show student that different surfaces 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's cube, 4B40.30
Location:
Cabinet: Thermodynamics Cabinet
Bay: (A4)
Shelf: #3
(attachment photo showing the fully set up demonstration)
Description:
Radiation of heat is demonstrated. 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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|
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Leslie's 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] |
|
Hot water |
|
|
Electric wires |
|
|
Electrometer |
|
|
Setup:
- Make sure that you have enough hot water.
- Connect the electric wires from the electrometer to the thermopile horn.
- Put the Leslie's cube on the revolving stand at one end of the table.
- Across the table, put the thermopole horn that connected with the electrometer and try to align the face of the horn to the side of the Leslie's cube.
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 hot water into the cube. A reading of the heat radiation from the surfaces is made by using a thermopile and an electrometer. You can show student that different surfaces 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]