Difference between revisions of "Parabolic Thermal Reflectors"
From UO Physics Demonstration Catalog
(Created page with "{{NewDemo|subject=Thermodynamics|topic=Heat and the First Law|file1=Parabolic_Thermal_Reflec.gif}} Two parabolic reflectors are aligned to demonstrate heat transfer by radiation. A thermometer or the radiation sensor is placed at the focal point of one of the reflectors. At the other focal point a small amount of alcohol is burned, or an object that has been chilled in liquid nitrogen is placed. The temperature will rise or fall depending on whether the object is hot or...") |
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{{NewDemo|subject=Thermodynamics|topic=Heat and the First Law|file1=Parabolic_Thermal_Reflec.gif}} | {{NewDemo|subject=Thermodynamics|topic=Heat and the First Law|file1=Parabolic_Thermal_Reflec.gif}} | ||
Two parabolic reflectors are aligned to demonstrate heat transfer by radiation. A thermometer or the radiation sensor is placed at the focal point of one of the reflectors. At the other focal point a small amount of alcohol is burned, or an object that has been chilled in liquid nitrogen is placed. The temperature will rise or fall depending on whether the object is hot or cold. | Two parabolic reflectors are aligned to demonstrate heat transfer by radiation. A thermometer or the radiation sensor is placed at the focal point of one of the reflectors. At the other focal point a small amount of alcohol is burned, or an object that has been chilled in liquid nitrogen is placed. The temperature at the other end will rise or fall depending on whether the object is hot or cold. The alignment must be very good to see the temperature decrease with the cold object at the other focal point. | ||
'''Location: | '''Location: | ||
''' | ''' | ||
* Shelf E-0 | * Shelf E-0 | ||
*Digital Therrometer | |||
Latest revision as of 17:26, 9 January 2023
Return to Heat and the First Law
Description:
Two parabolic reflectors are aligned to demonstrate heat transfer by radiation. A thermometer or the radiation sensor is placed at the focal point of one of the reflectors. At the other focal point a small amount of alcohol is burned, or an object that has been chilled in liquid nitrogen is placed. The temperature at the other end will rise or fall depending on whether the object is hot or cold. The alignment must be very good to see the temperature decrease with the cold object at the other focal point.
Location:
- Shelf E-0
- Digital Therrometer
