Na-12 Black Body Hole
Published: Tuesday 05 June 2007 - Updated: Thursday 31 March 2011
Aim
To simulate a blackbody emitter and demonstrate that a blackbody is a perfect emitter.
Apparatus
- Black body hole apparatus
- Digital video camera with IR (night vision) mode.
Diagrams
Click on pictures to enlarge.
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Black body Hole pic 1 |
Black body Hole pic 2 |
Black body Hole pic 5 |
Black body Hole pic 3 |
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Black body Hole pic 4 |
Description
The blackbody emitter consists of a carbon rod with a small 1mm blind hole in the center. The apparatus is connected to the Lecture theater low voltage power supply and the variac slowly increased till a current of approximately 30 Amps is produced. The video camera is focused on the center plugged hole and the image compared in IR night vision mode and normal mode.