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Outline experiments designed to differentiate between effective and ineffective emitters of thermal radiation.

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Cambridge IGCSE Combined ScienceThermal physicsSupplement contentPractical objective

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Outline experiments designed to differentiate between effective and ineffective emitters of thermal radiation

This point belongs to Transfer of thermal energy, especially Transfer of thermal energy outcomes.
You need to be able to outline experiments designed to differentiate between effective and ineffective emitters of thermal radiation.
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This objective helps connect Transfer of thermal energy outcomes to exam-style questions, flashcards, and revision notes for Transfer of thermal energy.

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Paper 6 structured question: Transfer of thermal energy

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Method

Experiment to Test Thermal Radiation Emission

In this experiment, different surfaces (black, white, and shiny) are heated under a lamp. The temperature of each surface is measured after 5 minutes.

Surface Type	Initial Temperature (°C)	Final Temperature (°C)	Temperature Change (°C)
Black	20	60	40
White	20	50	30
Shiny	20	40	20

a
State the independent variable in this experiment.
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[1]

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