“zodiacal light”的概念、定义、翻译、参考文献-科学参考

zodiacal light

Physics

A faint luminous glow in the sky that can be observed on a moonless night on the western horizon after sunset or on the eastern horizon before sunrise. It is caused by the scattering of sunlight by dust particles in interplanetary space.

Astronomy

A faint diffuse glow, comparable in intensity to the fainter parts of the Milky Way, produced by the reflection of sunlight from zodiacal dust particles in the ecliptic plane. From temperate latitudes, the zodiacal light is best seen on spring evenings about 90 min after sunset, or in the autumn about 90 min before sunrise; at these times, the ecliptic, along which the light appears to extend for some 60° to 90°, lies at a steep angle relative to the horizon. An observing site free from light pollution is essential. The intensity of the zodiacal light may vary with the solar cycle, being greatest around sunspot minimum when the interplanetary solar wind is dominated by fast-flowing particle streams from coronal holes.

Geology and Earth Sciences

A band of light apparent at night in the west, after twilight, and again before morning twilight, caused by atmospheric particles scattering sunlight.

单词	zodiacal light
释义	zodiacal light Physics A faint luminous glow in the sky that can be observed on a moonless night on the western horizon after sunset or on the eastern horizon before sunrise. It is caused by the scattering of sunlight by dust particles in interplanetary space. Astronomy A faint diffuse glow, comparable in intensity to the fainter parts of the Milky Way, produced by the reflection of sunlight from zodiacal dust particles in the ecliptic plane. From temperate latitudes, the zodiacal light is best seen on spring evenings about 90 min after sunset, or in the autumn about 90 min before sunrise; at these times, the ecliptic, along which the light appears to extend for some 60° to 90°, lies at a steep angle relative to the horizon. An observing site free from light pollution is essential. The intensity of the zodiacal light may vary with the solar cycle, being greatest around sunspot minimum when the interplanetary solar wind is dominated by fast-flowing particle streams from coronal holes. Geology and Earth Sciences A band of light apparent at night in the west, after twilight, and again before morning twilight, caused by atmospheric particles scattering sunlight.
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