A building services team compares infrared emission from three equally sized wall panels with different surface finishes. The panels are all at 60 ∘C60\ ^{\circ}\text{C}60 ∘C. An infrared detector is placed the same distance from each panel, and the readings are recorded under the same conditions.
| Surface of panel | Infrared detector reading in arbitrary units |
|---|---|
| matt black | 82 |
| matt white | 55 |
| shiny silver | 24 |
Write a conclusion for this investigation.
96 exam-style questions on Edexcel GCSE Physics 5.3 Black body radiation, covering 5.3.1 Emission of radiation and temperature, 5.3.2 Radiation balance and constant temperature, and 5.3.3 The temperature of the Earth. Each one has a worked solution and a mark scheme showing where the marks go.