NOVA：美国日食:在线播放
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NOVA：美国日食:最新迅雷BT资源
| 日期 | 资源名称 | 类型 | 大小 | 下载 |
|---|---|---|---|---|
| 2020-02-12 | nova：美国日食.nova.eclipse.over.america.2017.hd720p.x2 | 634.81MB | 下载 |
NOVA：美国日食:最新字幕下载
NOVA：美国日食:剧情介绍
Plot Summary:On August 21, 2017, millions of Americans witnessed the first total solar eclipse to cross the continental United States in 99 years. As in all total solar eclipses, the moon blocked the sun and revealed its ethereal outer atmosphere - its corona - in a wondrous celestial spectacle. While hordes of citizens flocked to the eclipse's path of totality, scientists, too, staked out spots for a very different reason: to investigate the secrets of the sun's elusive atmosphere. During the eclipse's precious seconds of darkness, they gathered new clues on how our sun works, how it can produce deadly solar storms, and why its atmosphere is so hot. NOVA investigates the storied history of solar eclipse science, and joins both seasoned and citizen-scientists alike as they don their eclipse glasses, tune their telescopes, and behold the Eclipse Over America.
1. 2017/8/21穿越美国的日全食是最近的热门. 本片从科学角度介绍这个事件. 2. 日全食的历史. 包括从古巴比伦的沙巴周期,到精确预测全食时间地点. 3. 介绍日全食对研究太阳的重要性. 特别是日冕, 到现在很多原理都没弄清楚. 4. 日全食的视频犹如身临其境. 而讲述原理的演示就更惊艳了.