Simple Description

An electromagnetic wave that transfers heat energy

Further Detail

The hotter an object is, the more infra red radiation it gives off. Black, matt objects (i.e. not white/silver or shiny) are the best absorbers and emitters of infra red radiation - as such, if you want a device to give off lots of heat you would colour it a dull, black colour.

Related Words:

• Heat transfer
• Conduction (thermal)
• Convection
• Radiation
• Electromagnetic spectrum

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