Na-12 Black Body Hole

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.

Black Body Hole 1 Black Body Hole 2 Black Body 3 Black Body 4 Black Body 5

Black Body Hole Apparatus at various temperatures.

Description

The blackbody emitter consists of a carbon rod with a small 1mm blind hole in the centre. The apparatus is connected to the Lecture theatre 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 centre plugged hole and the image compared in IR night vision mode and normal mode.

Safety Notes

Black Body Hole SOP-2