Sentences with phrase «radiate at infrared wavelengths»

Radiation comes in from the sun (solar radiation at short wavelengths), and every body radiates according to its temperature (proportional to the fourth power of absolute temperature), so that on Earth we, and the surface and atmosphere radiate at infrared wavelengths.

But they did heat up the dust, causing it to radiate at infrared wavelengths.

Not exact matches

For instance, a star called Beta Pictoris radiates 0.24 per cent of its energy at far - infrared wavelengths, and is surrounded by a disc of dust which astronomers have actually photographed.

Besides, different surfaces radiate different amounts of heat at infrared wavelengths owing to a material characteristic known as emissivity.

Red dwarf stars, which only have some 10 to 50 percent of the Sun's mass but comprise perhaps 85 percent our Milky Way galaxy's stars, radiate most strongly at invisible infrared wavelengths and produce little blue light.

The «colours» are due to differences in the surface temperature of starsw1: hotter stars emit most of their light in the visible blue or ultraviolet regions of the electromagnetic spectrum, whereas cooler stars radiate at longer wavelengths, in the visible red or infrared regions (see Mignone & Barnes, 2011a).

The idea is that a technological civilisation capable of building megastructures that collect all the energy radiated by a star would produce thermal leakage at infrared wavelengths.

And: Far infrared: 15 — 1,000 µm http://en.wikipedia.org/wiki/Infrared And: «Humans at normal body temperature radiate chiefly at wavelengths around 10 μm» So humans and anything cooler 98.6 F radiate some energy in the far infrared [15 — 1,000 µm].

The thing is that greenhouse gases absorb incoming solar energy at several wavelengths of the solar spectrum but only radiate it out again in the infrared.