Quick Answer: The Radiation Absorption Kit is a set of 4 aluminium discs in matt black, mirror black, matt silver and mirror silver, each with a liquid crystal thermometer for comparing heat absorption.
Last updated: October 2026
Key Features
4 aluminium discs: matt black, mirror black, matt silver and mirror silver
Liquid crystal thermometer bonded to the reverse of each disc
Reads 30°C to 65°C in 5°C increments
Responds quickly to infrared radiation or bright light
Supplied with a holder in a storage box
Technical Specifications
Specification
Value
Discs
4, aluminium
Finishes
Matt black, mirror black, matt silver, mirror silver
Thermometer
Liquid crystal, bonded to reverse
Range
30°C to 65°C
Increments
5°C
Storage
Holder and storage box
About This Product
The discs are set in the holder at the same distance from an infrared source or bright lamp, and the thermometers on the back show how each surface warms. Comparing black with silver and matt with mirror finishes shows how colour and texture affect absorption, and the kit also supports work on cooling rates, filters, reflectors and the inverse square law.
Frequently Asked Questions
Q1. What temperature range do the thermometers show? From 30°C to 65°C in 5°C increments. Each disc has its own liquid crystal thermometer on the reverse.
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