Thermal radiation and energy balance

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Question 28
Easy

An investigation is carried out to compare how different surface finishes emit infrared radiation.

A cylindrical copper container filled with hot water is placed on a thick cork tile as shown in the diagram.

A cylindrical copper container filled with hot water, resting on a thick cork tile on top of a wooden workbench. The container has two halves with different surface finishes: one side is painted dull black, and the other is shiny silver. An infrared detector is set up at a fixed distance, pointing towards the dull black surface, and is connected to a digital radiation meter.

Suggest why the copper container is placed on a thick cork tile instead of directly on the laboratory bench.

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Thermal radiation and energy balance Questions

  1. GCSE
  2. /Physics
  3. /Thermal radiation and energy balance