0 a circle of light that can sometimes be seen around the moon at night, or around the sun during an eclipse (= a time when the moon is positioned exactly between the sun and the earth)
There the sun burned, and around it was an unmistakable corona.
We know that during a total eclipse of the sun the moon is surrounded by a luminous corona.
These results are useful for description of electron-beam propagation in the solar corona, which is a source of sporadic radiation.
At this stage, the wire remains in a liquid- solid phase with a low-density plasma corona.
The high-density pellet core is surrounded by a hot, fully ionized low-density corona.
Taking into account the absence of counteracting pressure in the corona plasma, it is possible to expect it pinching onto the cold core plasma.
Density measurements of the coronal plasma indicate that the fraction of the total initial mass contained in the corona increases as the wire diameter decreases.
In weakly deformed gneiss, the mafic minerals (biotite, augite and hornblende) occur as irregular clusters, locally separated from plagioclase by coronas of garnet.
