|
Size: 1598
Comment:
|
Size: 1874
Comment:
|
| Deletions are marked like this. | Additions are marked like this. |
| Line 13: | Line 13: |
| Insert description of apparatus, its component, what it is demonstrating. | Two large parabolic reflectors, 12 inches in diameter, one with a "white tipped" stick match at it's focus and the other with a nichrome heater element at it's focus. Each reflector has two adjusters on it, one adjust for height and the other for tilt angle. Both adjusters will be important with the alignment of the foci of both reflectors. |
| Line 25: | Line 25: |
| 1. Put the heater at the focus of one reflector and a match at the focus of the others. | 1. Put the heater at the focus of one reflector and a match at the focus of the other. |
| Line 33: | Line 33: |
| This demonstration shows that the energy of infrared radiation can be focused and transmitted much the same way as light. After set up, you just plug the heater in to the outlet and wait. You will see that the match is light due to the heat radiation focuses and transmits to the match. | This demonstration shows that the energy of infrared radiation can be focused and transmitted much the same way as light and sound. After setup, you just plug the heater in to the outlet and wait. You will see that the match is light due to the heat radiation focuses and transmits to the match. |
Light the Match , 4B40.10
Location:
Cabinet: Thermodynamics Cabinet
Bay: (B3)
Shelf: #1
attachment:TD4B40_10-01a.jpg
Description:
Two large parabolic reflectors, 12 inches in diameter, one with a "white tipped" stick match at it's focus and the other with a nichrome heater element at it's focus. Each reflector has two adjusters on it, one adjust for height and the other for tilt angle. Both adjusters will be important with the alignment of the foci of both reflectors.
Equipment |
Location |
ID Number |
|
|
|
Two Parabolic reflectors |
[:ThermoCabinetBayB3: TD, B3, Shelf #1] |
4B40.10 |
Heater |
[:ThermoCabinetBayB3: TD, B3, Shelf #1] |
|
Match |
|
|
Setup:
- Aligned the two parabolic reflectors across the table.
- Put the heater at the focus of one reflector and a match at the focus of the other.
Cautions, Warnings, or Safety Concerns:
- Try to align really carefully because if they are not aligned appropriately, the match will take time to light.
- Beware of the heater.
Demonstration:
This demonstration shows that the energy of infrared radiation can be focused and transmitted much the same way as light and sound. After setup, you just plug the heater in to the outlet and wait. You will see that the match is light due to the heat radiation focuses and transmits to the match.
attachment:TD4B40_10-01i.jpg |
attachment:TD4B40_10-02i.jpg |
attachment:TD4B40_10-05i.jpg |
|
attachment:TD4B40_10-03i.jpg |
attachment:TD4B40_10-04i.jpg |
References:
- List any references
[:FirstLaw:Heat and the First Law]
[:Demonstrations:Demonstrations]
[:Instructional:Home]