Beaming Blue

Relativistic beaming

In physics, relativistic beaming is the process by which relativistic effects modify the apparent luminosity of matter that is moving at speeds close to the speed of light. Relativistic beaming causes matter moving towards an observer—for example, a telescope on Earth—to appear brighter than matter moving away, even when there is no intrinsic difference in the luminosities. In an astronomical context, relativistic beaming commonly occurs in two oppositely directed relativistic jets of plasma that originate from a central compact object that is accreting matter. Accreting compact objects with relativistic jets explain phenomena such as X-ray binaries, gamma-ray bursts, and, on a much larger scale, active galactic nuclei.

Blue

Blue is one of the three primary colours in the RGB (additive) colour model, as well as in the RYB colour model. It lies between violet and cyan on the spectrum of visible light. The term blue generally describes colours perceived by humans observing light with a dominant wavelength between approximately 450 and 495 nanometres. The clear daytime sky and the deep sea appear blue because of an optical effect known as Rayleigh scattering. An optical effect called the Tyndall effect explains blue eyes. Distant objects appear more blue because of another optical effect called aerial perspective.

beaming

Adjective

1. Smilingly happy; showing happy emotion.

Verb

1. present participle and gerund of beam

blue

Adjective

1. Of a blue hue.
2. Depressed, melancholic, sad.

Noun

1. The colour of the clear sky or the deep sea; the colour midway between green and violet in the visible spectrum and one of the primary additive colours.
2. Anything coloured blue, especially to distinguish it from similar objects differing only in colour.