physical phenomenon caused by light reflected off surfaces distant from the source, and arriving at the observer with a delay relative to this distance; analogous to an echo of sound, it mostly only manifests itself over astronomical distances
Wikidata facts
- Subclass of
- physical phenomenon
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- Commons category
- Light echo
- characteristic of
- light
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via Wikidata · CC0
Article · 中文
光回波（回光/回声光）是天文学的一种现象。类似于声音的反射, 光回波常在星体光度快速增加或脉冲时产生, 比如在对新星的观察中, 被星际尘埃反射出的光在沿直线的光之后很长一段时间才到达观察者。由于它们的几何形状，回光可以令人产生超光速的错觉。
Abstract from DBpedia / Wikipedia · CC BY-SA