Quick Answer: The Leslies Radiation Plate is an electrically heated aluminium plate with matt black, polished and roughened sections held at the same temperature, so the heat radiated from each surface can be compared.
Last updated: October 2026
Key Features
Single aluminium plate with 3 regions: matt black, polished aluminium and roughened aluminium
Resistive element heats the plate so each section is at the same temperature
Target temperature of 75°C, reached in approx. 10 minutes
Needs an adjustable 12 V D.C. power supply capable of 1 A continuously
Connection to the power supply via 4 mm sockets
Infra-red thermometer for readings not supplied
Technical Specifications
Specification
Value
Plate
Single aluminium, 3 regions
Surfaces
Matt black, polished aluminium, roughened aluminium
Target temperature
75°C
Time to target
Approx. 10 minutes
Power supply
Adjustable 12V D.C., 1A continuous
Connection
4 mm sockets
About This Product
With all three sections at the same temperature, readings of each surface taken with an infra-red thermometer show the differences in heat radiated from the various surfaces. Electrical heating removes the need for water or Bunsen flames used in some more conventional methods.
Frequently Asked Questions
Q1. What power supply does the plate need? An adjustable 12 V D.C. power supply capable of providing 1 A continuously, connected via 4 mm sockets.
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