Quick Answer: The Heat Absorption Model compares how a matte black vessel and a reflective silver vessel absorb radiant heat. A lamp heats both equally while two alcohol thermometers track the temperature of each.
Last updated: October 2026
Key Features
1 matte black vessel and 1 reflective silver vessel
2 alcohol-based thermometers, one per vessel
Lamp on a stable mount placed at an equal distance from both vessels
Vessels made of aluminium alloy
Readings taken every 2 minutes over 10 to 15 minutes for graphing
Technical Specifications
Specification
Value
Vessels
1 matte black, 1 reflective silver
Thermometers
2, alcohol-based
Heat source
Low-wattage lamp on a stable mount
Material
Aluminium alloy
Category
Physics / thermal radiation
About This Product
Students note the starting temperature of both vessels, switch on the lamp and log the readings at regular intervals, then plot the two curves. The black surface warms faster than the reflective one, which leads into discussion of radiation, albedo, solar water heaters and energy-efficient buildings. The vessels can also be set out in direct sunlight.
Frequently Asked Questions
Can the Heat Absorption Model be used in sunlight?
Yes. Besides the lamp for controlled indoor runs, the vessels can be placed in direct sunlight to show solar heat absorption.
How long should temperatures be recorded?
The method suggests readings every 2 minutes for a total of 10 to 15 minutes.
.png)
.png)
.png)