Inline image 5

2012年11月15日星期四

跟踪日全食


原文:Chasing the Total Solar Eclipse
作者:Luna Shyr , National Geographic
发表:2012-11-14
本文由Fish翻译。


 
 2009年的马绍尔群岛日全食

    本周将会出现日全食。斯洛伐克的天文学家Vojtech Rusin将要在澳大利亚某酒店的阳台上见证他所经历的第19个日全食。

    1.你走遍世界各地,观察日食。此行有什么不同或特别的吗?
    日全食发生的次数大概为每100年75次,这次日食是非常重要,可以帮助研究日冕最上层的太阳大气的影响和地球磁场的结构。

    2.你已经看过了18个日全食。哪一个特别难忘的?
    毫无疑问,肯定是我看过的第一个,在非洲,1973年,它就像我的初恋一样。大家肯定都记得自己的初恋,当时我穿越撒哈拉大沙漠,从捷克斯洛伐克向尼日尔。我记得那次日食持续了6分45秒,是我观察过的最长时间的日食。

    3.在四十年来你一直在研究太阳日冕,有发现什么变化吗?
    它改变了太多了!有一点是,成像技术变得越来越成熟与先进,我们现在不必使用非常沉重的设备了。早在1980年,我乘坐卡车从捷克斯洛伐克去印度的班加罗尔附近,那段距离你无法想象,大约有10,000公里(6,200英里)!

                           
1980年,印度日全食

    4.你说这日全食将持续2分钟03秒。您是如何计算日食将持续时间,并且如此精确?
    一切都是受万有引力定律。 如果我们可以知道某些参数,比如的准确位置,卫星如何围绕天体运行,地球和太阳之间的距离以及地球和月亮之间的距离,我们当然也可以精确计算。

    5.是什么让你拍的每个日全食图像都如此不同?
    太阳的日冕的形状是不断变化的,这种变化,其周期约11年(太阳活动周期)。它主要是太阳自转时由磁场对太阳表面的影响所造成的。电晕生成大量的令人惊叹的形状,如头盔幡和极射线。也有日冕物质抛射,产生快速的形状变化,持续数个小时左右。

    6.观看日全食,哪点最令人兴奋呢?
    你总是担心观察日全食的旅行与活动是否会按计划进行。当大功告成后,你会体会到一种特殊的令人愉悦感觉。

本文版权属于原出版公司及作者所有。©译者遵守知识共享署名-非商业性使用-相同方式共享 3.0许可协议。  

1 comments:

Lei Shen 说...

One red princeling Hu Shiying posted a photo of a private gathering of China's red princelings, in which a infamous red guard Song Yaowu appeared.

The party was hosted by Xi Jinping, then CCP Party Boss in Zhejiang Province. Others appeared in this photo includes Bo Xicheng (son of Bo Yibo and brother of Bo Xilai), Liu Yuan (son of Liu Shaoqi), Wang Qishan (son in law of Yao Yilin), Yang Li (daughter of Yang Shangkun), Chen Yuan (son of Chen Yun) among others. Song Yaowu is the women 4th from left in the front. Xi Jinping is 3rd from right in the second row.

Song, together with another Red Guard Deng Rong (daughter of Deng Xiaoping), killed their teacher Bian Zhongyun, the first teacher to be killed by students in the Great Cultural Revolution. The incident opened an era when red guards across the country were mobilized to take over schools by violence. Many more teachers would be tortured and killed in the next few years.

One of those from whom Hu Jie got evidence was another teacher at the school, Lin Mang.In the film Lin states that the Red Guards beat Bian Zhongyun in a toilet room. He described one of the perpetrators as a tall, thin girl. Lin also stated in the film that Red Guards forced him to carry Bian's body after her murder.

Based upon subsequent additional credible evidence received,the tall, thin girl who Lin saw beating Bian was Liu Tingting, daughter of Liu Shaoqi, the president of China.

发表评论

知识共享许可协议

本作品采用知识共享署名-非商业性使用-相同方式共享 3.0 Unported许可协议进行许可。