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Size: 1566
Comment:
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Size: 2062
Comment:
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| Deletions are marked like this. | Additions are marked like this. |
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| = Wood and metal rod , 4B.30.40 = | = Wood Dowels With Brass Tube , 4B.30.40 = |
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| Insert description of apparatus, its component, what it is demonstrating. | Thermal conduction demonstration that compares the thermal conductivity of metal and wood. Two wooden dowels and a brass tube, 5/4 inches in diameter. Each wood dowel is inserted to the brass tube on both ends. Wrap a sheet of paper tightly around the brass tube and the inner part of wooden dowels near the brass tube. |
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| ||Wood and metal rod||[:ThermoCabinetBayA4: TD, A4, Shelf #2]|| || | ||Wood dowels and brass tube||[:ThermoCabinetBayA4: TD, A4, Shelf #2]||<:>4B.30.40 || |
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| 1. Wrap a piece of paper around the wood and metal rod which are jointed end to end. 1. Install the burner gas tube with the gas source. 1. Make sure that you have the gas switch off and in the right pressure that you want before you turn it on. |
Note: Make sure that the red and white gas cart is in placed and connected to the utility trench gas line. 1. Insert the wood dowel rods into the brass tube on both side. 1. Wrap a sheet of paper tightly around the brass tube and the inner part of wood dowels near the brass tube and tape the paper by scotch tape. 1. Connect the burner gas line to the red and white gas cart. |
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| Wrap a piece of paper around the end-to-end-jointed wood and metal rod. Place the junction in the flame of the burner. The part of the paper wrapped around the wood will be darker that that around the metal because the metal has more rapidly conduction the heat away than the wood. | This demonstration shows thermal conduction properties of different materials. After setup, you have to carefully heat the paper along the wood/brass tube by holding it far enough from the flame so that the paper is not burned out. As the time goes by, you will see the the paper that wrapped on the wood dowel part is getting darker than that on the brass tube. |
Wood Dowels With Brass Tube , 4B.30.40
Location:
Cabinet: Thermodynamics Cabinet
Bay: (A4)
Shelf: #2
(attachment photo showing the fully set up demonstration)
Description:
Thermal conduction demonstration that compares the thermal conductivity of metal and wood. Two wooden dowels and a brass tube, 5/4 inches in diameter. Each wood dowel is inserted to the brass tube on both ends. Wrap a sheet of paper tightly around the brass tube and the inner part of wooden dowels near the brass tube.
Equipment |
Location |
ID Number |
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Wood dowels and brass tube |
[:ThermoCabinetBayA4: TD, A4, Shelf #2] |
4B.30.40 |
Paper |
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Scotch tape |
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Burner |
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Setup:
Note: Make sure that the red and white gas cart is in placed and connected to the utility trench gas line.
- Insert the wood dowel rods into the brass tube on both side.
- Wrap a sheet of paper tightly around the brass tube and the inner part of wood dowels near the brass tube and tape the paper by scotch tape.
- Connect the burner gas line to the red and white gas cart.
Cautions, Warnings, or Safety Concerns:
- Beware of hot frame.
- Demonstration may require practice.
Demonstration:
This demonstration shows thermal conduction properties of different materials. After setup, you have to carefully heat the paper along the wood/brass tube by holding it far enough from the flame so that the paper is not burned out. As the time goes by, you will see the the paper that wrapped on the wood dowel part is getting darker than that on the brass tube.
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]