aurorae 曙光
电晕
极光(aurora的名词复数)
- And there might be more beautiful views to come if it triggers aurorae.
如果能引起极光的话将会有更加美妙的景象出现。 - The images show glowing aurorae flickering at each pole - Saturn's equivalent of the Northern and Southern Lights on Earth.
图片中可以看到两极的极光同时在闪烁发光,就如同于地球南北极的极光景色。 - Aurorae are caused by the interaction between energetic charged particles from the sun and gas molecules in the upper atmosphere of the Earth.
极光是由地球大气上层的气体分子与来自太阳的高能带电粒子相互作用产生的。
Aurora \Au*ro"ra\, n.; pl. E. {Auroras}, L. (rarely used)
{Auror[ae]}. [L. aurora, for ausosa, akin to Gr. ?, ?, dawn,
Skr. ushas, and E. east.]
1. The rising light of the morning; the dawn of day; the
redness of the sky just before the sun rises.
2. The rise, dawn, or beginning. --Hawthorne.
3. (Class. Myth.) The Roman personification of the dawn of
day; the goddess of the morning. The poets represented her
a rising out of the ocean, in a chariot, with rosy fingers
dropping gentle dew.
4. (Bot.) A species of crowfoot. --Johnson.
5. The aurora borealis or aurora australis (northern or
southern lights).
{Aurora borealis}, i. e., northern daybreak; popularly called
northern lights. A luminous meteoric phenomenon, visible
only at night, and supposed to be of electrical origin.
This species of light usually appears in streams,
ascending toward the zenith from a dusky line or bank, a
few degrees above the northern horizon; when reaching
south beyond the zenith, it forms what is called the
corona, about a spot in the heavens toward which the
dipping needle points. Occasionally the aurora appears as
an arch of light across the heavens from east to west.
Sometimes it assumes a wavy appearance, and the streams of
light are then called merry dancers. They assume a variety
of colors, from a pale red or yellow to a deep red or
blood color. The
{Aurora australis}is a corresponding phenomenon in the
southern hemisphere, the streams of light ascending in the
same manner from near the southern horizon.