红精灵和树
(原标题: The Red Sprite and the Tree)
2023-09-18
浏览次数: 67
精灵和树简直是天壤之别。首先，红色精灵是一种不寻常的闪电形式，而树是一种常见的植物。精灵离我们很远——在地球大气层的高处，而树离我们很近——只有一个足球场的距离。精灵是快速的——电子以接近光速的速度上下流动，而树是缓慢的——木头固定在地面上。精灵是明亮的——照亮了天空，而树是暗淡的——主要是通过反射光发光。精灵转瞬即逝——只持续了不到一秒钟，而树是持久的——现在已经存活了很多年。然而，在本月初法国拍摄的一场雷暴经过大西洋比利牛斯山脉时，两者在一起拍摄时却显得奇怪地相似。你的天空惊喜：APOD在你的生日上展示了什么照片？(1995后)
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The sprite and tree could hardly be more different. To start, the red sprite is an unusual form of lightning, while the tree is a common plant. The sprite is far away -- high in Earth's atmosphere, while the tree is nearby -- only about a football field away. The sprite is fast -- electrons streaming up and down at near light's speed, while the tree is slow -- wood anchored to the ground. The sprite is bright -- lighting up the sky, while the tree is dim -- shining mostly by reflected light. The sprite was fleeting -- lasting only a small fraction of a second, while the tree is durable -- living now for many years. Both however, when captured together, appear oddly similar in this featured composite image captured early this month in France as a thunderstorm passed over mountains of the Atlantic Pyrenees. Your Sky Surprise: What picture did APOD feature on your birthday? (post 1995)
© Maxime Villaeys