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科技导报
|学术争鸣
2007
, 25
(0716) :
57
-60
用军事理论分析“航天员从地球低轨道上裸眼看到过长城”的事实
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远林1 ,颜军2 ,熊伟3 ,胡列4 ,孙惠敏5
作者信息
1. 中国新闻周刊杂志社2. 解放军报社3. 兵器知识杂志社4. 西安高新科技培训学院5. 阿里巴巴网站
通讯作者:
远林
Analysis on the Issue
Affiliations
出版时间: 2007-08-25
文章导航
“航天员从地球低轨道上裸眼能否看到长城”，这个问题引起广泛关注和争论。争论焦点涉及如何正确认识人眼视觉原理等问题。应用国内外出版物中公开介绍的目视方面的军事科技理论和计算公式，从人眼视觉阈、视角阈等基本概念入手，通过理论分析、计算与实验，最终验证了“航天员从地球低轨道上裸眼看到过长城”的事实。
The issue whether astronauts can see the Great Wall with naked eyes from the lower orbit round the Earth has been in dispute and focus. The major arguments include how human eyes work in principle. In this paper, military technical theories about human eyes and related formulas published both at home and abroad are analyzed and applied. Based on the concepts of visibility threshold and visibility angle, through theoretical analysis, calculations and experiments, the fact of "astronauts can see the Great Wall with naked eyes from the lower orbit round the Earth" is finally established.
远林;颜军;熊伟;胡列;孙惠敏.
用军事理论分析“航天员从地球低轨道上裸眼看到过长城”的事实.
科技导报,
2007
, 25
(0716)
: 57
-60
.
.
Analysis on the Issue[J].
Science & Technology Review ,
2007
, 25
(0716)
: 57
-60
.
2007年第25卷第0716期
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文章信息
接收时间：2008-08-20
首发时间：2007-08-25
出版时间：2007-08-25
收稿日期：2008-08-20
修回日期：1900-01-01
https://castjournals.cast.org.cn/joweb/kjdb/CN/1242117308315930917
引用本文
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2种不同金属材料的力学参数
科 属数 种数 占总种数比例 属 种数 占总种数比例 鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78 小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39 多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39 红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87 小菇属 Mycena 11 5.26 光柄菇属 Pluteus 5 2.39 红菇属 Russula 17 8.13 栓菌属 Trametes 5 2.39
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