bright segment

bright segment

[′brīt ‚seg·mənt]
(geophysics)
A faintly glowing band which appears above the horizon after sunset or before sunrise. Also known as crepuscular arch; twilight arch.
References in periodicals archive ?
In addition to luxury, another bright segment within the specialty channel, according to respondents, consisted of outdoors and sports retailers (e.
A setting of 1/4 second at f/8 with ISO 400 film, for example, will "burn in" the Moon's bright segment but bring out some details within the umbra itself.
Try operating your telescope at 50 [yen] or more and moving the Moon's bright segment entirely outside the field to get the clearest view of the dim regions inside the umbra.
The fire in her opal ring has died (141), while the husband, practising swipes with his heavy sword, "cut bright segments from the air" (141).