Quick Answer: Leslies Cube is a tinplate box with 100 mm sides whose four vertical faces are blackened, roughened, varnished and polished, so the radiant heat output of each face can be compared.
Last updated: October 2026
Key Features
Tinplate box with 100 mm sides
Vertical faces blackened, roughened, varnished and polished respectively
Top opening fitted with a lid
Filled with water in use
Infrared sensors may be used to compare the radiant heat output of each face
Technical Specifications
Specification
Value
Material
Tinplate
Dimensions
100 mm x 100 mm x 100 mm
Face finishes
Blackened, roughened, varnished, polished
About This Product
The cube is filled with water, and the relative radiant heat output from each of its four faces can then be compared, for example using infrared sensors. Each vertical face carries a different finish, from blackened through to polished.
Frequently Asked Questions
Q1. How are the faces compared? With the cube filled with water, infrared sensors may be used to compare the relative radiant heat output from each of the four faces.
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