Infrared Flush

Infrared

Infrared radiation is electromagnetic radiation (EMR) with wavelengths longer than that of visible light but shorter than microwaves. The infrared spectral band begins with the waves that are just longer than those of red light, so IR is, per definition, invisible to the human eye. IR is generally understood to include wavelengths from around 780 nm (380 THz) to 1 mm (300 GHz). IR is commonly divided between longer-wavelength thermal IR, emitted from terrestrial sources, and shorter-wavelength IR, or near IR, part of the solar spectrum. Longer IR wavelengths (30–100 μm) are sometimes included as part of the terahertz radiation band. Almost all black-body radiation from objects near room temperature is in the IR band. As a form of EMR, IR carries energy and momentum, exerts radiation pressure, and has properties corresponding to both those of a wave and of a particle, the photon.

infrared

Noun

1. The electromagnetic radiation of a wavelength longer than visible light, but shorter than microwave radiation, having a wavelength between 700 nm and 1 mm.
2. A specific wavelength in this range.

Adjective

1. Having a wavelength in the infrared spectrum.
2. Relating to very low energies or very large distances or time spans.

flush

Noun

1. A group of birds that have suddenly started up from undergrowth, trees, etc.

Verb

1. To cause to take flight from concealment.
2. To take suddenly to flight, especially from cover.