Quick Answer: Radiation Cans are a set of three cans of the same material in different colours, used to show that a black surface absorbs heat energy better, and radiates heat more rapidly, than lighter colours.
Last updated: October 2026
Key Features
Set of three cans made from the same material
Cans differ only in colour, one of them black
Dimensions: 53 mm (D) x 153 mm (H)
Under a lamp, the black can absorbs heat energy better than the lighter colours
With the lamp switched off, the black can radiates heat more rapidly
Technical Specifications
Specification
Value
Number of cans
Three
Material
Same material for all cans
Diameter
53 mm
Height
153 mm
About This Product
The cans are irradiated with a lamp to compare how surfaces of different colours take up heat energy, and the black one absorbs it better than the lighter ones. Once the lamp is switched off, the same set shows the black can giving off heat more rapidly than the other two. Students see that black has the greater rate of both absorption and radiation.
Frequently Asked Questions
Q1. What does the black can show? When the cans are irradiated by a lamp, the black can absorbs heat energy better than the lighter colours. After the lamp is switched off, it radiates heat more rapidly than the other two.
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