Fr.: colonne d'accrétion
The channel through which matter is accreted onto a body such as a → protostar, → white dwarf, → neutron star, or → black hole. The accreting body possesses magnetic fields strong enough to disrupt the → accretion flow and carry the material through column-shaped channels directly on to a small fraction of the stellar surface near the magnetic poles.
Fr.: mauvaise colonne
Column of a → CCD detector that does not correctly read out charge.
Bad, from M.E. badde, but the origin of the word is not clear; → column.
Sotun, → column; bad, from Mid.Pers. wad, maybe from Old Iranian *vata- "small;" cf. Scythian bata- "small, bad," Sogdian wtγy "suffer, sorrow."
CCD detector: Series of pixels arranged under one another.
Column, from O.Fr. columpne, from L. columna "pillar," collateral form of columen "top, summit," from PIE *kel- "to project."
Sotun, from Mid.Pers. stun, from O.Pers. stênâ "column," Av. stuna-, Skt. sthuna- "column."
Fr.: densité de colonne
Density of the interstellar matter lying between an object and the Earth in a cylinder with a unity base.
Fr.: colonne de Taylor
A phenomenon in which the relative motion of a homogeneous rotating liquid tends to be the same in all planes perpendicular to the axis of rotation. When a rotating fluid comes into contact with a submerged object, the fluid flows around it as if it were a cylinder extending the entire depth of the fluid parallel to the axis of the system.
→ Taylor number; → column.