Greenhouse gas: some gases can absorb infrared radiation and retain it in the atmosphere.
Times, Sunday Times (2008)
Most of this warming is in the form of infrared radiation which the earth gives off and the atmosphere absorbs.
Oliver Morton Eating the Sun: How Plants Power the Planet (2007)
He came across infrared radiation by accident when splitting sunlight into its constituent colours by passing it through a prism.
Times, Sunday Times (2008)