정의: Dawn is the time that marks the beginning of twilight before sunrise. It is recognized by the appearance of indirect daylight being scattered in Earth's atmosphere, when the centre of the Sun's disc has reached 18° below the observer's horizon. This morning twilight period will last until sunrise, when direct daylight outshines the diffused light.
| 핵심 연구 분야 | Analysis |
|---|---|
| 주요 연도 | 2021년 |
| 주요 연관 키워드 | party |
| 좋아요 수 | 0 |