Class 11 Physics simulations · Thermal Properties of Matter

Net thermal radiation

Compare radiation emitted by a warm surface with radiation absorbed from its surroundings.

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What to notice

Radiative heat transfer depends on absolute temperature to the fourth power.

Key relation

Pnet = εσA(T⁴ − Ta⁴)

Try this

Set the surface colder than the room to reverse heat flow.

What you can change

• Surface temperature: 200 to 1000 K
• Surroundings: 200 to 500 K
• Emissivity: 0.1 to 1

More in Thermal Properties of Matter

• Bimetallic strip
• Mixing hot and cold water
• Thermal expansion
• Steady heat conduction
• Heating curve: ice to steam
• Newton’s law of cooling
• Heating with specific heat
• Anomalous expansion of water

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