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Size: 1834
Comment:
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Size: 1764
Comment:
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| Deletions are marked like this. | Additions are marked like this. |
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1. Install the burner. 1. Heat the bimetallic strip until it bends to one side. 1. Then, open the liquid nitrogen tank and put the bimetallic strip in the liquid nitrogen tank. 1. Take the bimetallic strip out of the liquid nitrogen tank and show students that it bends to the opposite side. |
1. Make sure that you have all apparatuses in the table above. 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. |
| Line 35: | Line 33: |
| The bimetallic strip consists of brass and stainless steel. Since brass has higher thermal [http://en.wikipedia.org/wiki/Coefficient_of_thermal_expansion expansion coefficient] than stainless steel. When it is heated by the burner, it bends to the stainless steel side. On the other hand, placed in liquid nitrogen (77K) the strip bends in opposite which is to the brass side. | The bimetallic strip consists of brass and stainless steel. Since brass has higher thermal [http://en.wikipedia.org/wiki/Coefficient_of_thermal_expansion expansion coefficient] than stainless steel. When it is heated by the burner, it bends to the stainless steel side. On the other hand, placed it in liquid nitrogen (77K) the strip bends in opposite which is to the brass side. |
Bimetallic Strip, 4A30.10a
Location:
Cabinet: Thermodynamics Cabinet
Bay: (A3)
Shelf: #1
(attachment photo showing the fully set up demonstration)
Description:
Insert description of apparatus, its component, what it is demonstrating.
Equipment |
Location |
ID Number |
|
|
|
Bimetallic Strip |
[:ThermoCabinetBayA3: TD, A3, Shelf #1] |
|
Burner |
location |
NA |
Liquid nitrogen |
location |
NA |
Safety grove and glasses |
location |
NA |
Setup:
- Make sure that you have all apparatuses in the table above.
- Install the burner gas tube with the gas source.
- Make sure that you have the gas switch off and in the right pressure that you want before you turn it on.
Cautions, Warnings, or Safety Concerns:
- Beware of the burner and the liquid nitrogen.
Demonstration:
The bimetallic strip consists of brass and stainless steel. Since brass has higher thermal [http://en.wikipedia.org/wiki/Coefficient_of_thermal_expansion expansion coefficient] than stainless steel. When it is heated by the burner, it bends to the stainless steel side. On the other hand, placed it in liquid nitrogen (77K) the strip bends in opposite which is to the brass side.
attachment other photos |
attachment other photos |
attachment other photos |
attachment other photos |
References:
[:ThermalProperties:Thermal Properties of Matter]
[:Demonstrations:Demonstrations]
[:Instructional:Home]