Earth's surface absorbs solar radiation and emits terrestrial radiation.

The surface of cold cathodes can emit secondary electrons at a ratio greater than unity (breakdown).

Now, Mr. Karsh said, the loading docks are being refinished, in the belief that a smoother surface will emit less noise.

The Earth's surface and atmosphere emits heat radiation in the infrared spectrum, called long wave radiation.

The surface emits a radiative flux density F according to the Stefan-Boltzmann law:

(The exception is "Thank Goodness for the Experts," whose colors and surfaces emit a degree of visual presence otherwise lacking.)

The surface of the sun ( 6000 K) emits large amounts of both infrared and ultraviolet radiation, but its emission is peaked in the visible spectrum.

A white surface treated with an optical brightener can emit more visible light than that which shines on it, making it appear brighter.

The surfaces emitted a soft glow, with cleverly subtle spotlights shining down onto the table itself.

Different surfaces absorb and emit the sun's rays in different ways, Mr. Cornish said, ocean versus land, or on a smaller scale fields versus forest.