from Wiktionary, Creative Commons Attribution/Share-Alike License
- proper n. A crater on the Moon.
Sorry, no etymologies found.
The image you can see is known as Haidinger’s brush.
Exner observes that this explanation would not, however, apply to the disappearance of the vessel-figure, the circulation phenomenon, the foveal figure, the polarization-sheaf of Haidinger, Maxwell's spot, or the ring of Löwe; for these phenomena disappear in a similar manner during movement.
Mr.E. W. Brayley supported this view of planetary production in 1864,  and it has recommended itself to Haidinger, Helmholtz, Proctor, and Faye.
By using a Nicol's prism along with this apparatus, the brushes of Haidinger are well seen in connexion with the spot, and the fact of the brushes being the spot analysed by polarized light becomes evident.
"GTL is committed to meeting all of the corrections community's communications requirements, now and in the future, and the prevention of contraband cell phone use is an extension of that mission," said Haidinger.