主题:【原创】自己写一下对美国人登月的看法,可能会挨砖头 -- 黄河故人
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The film was kept in metal containers that prevented radiation from fogging the film's emulsion.[13], pp. 162–163 In addition, film carried by unmanned lunar probes such as the Lunar Orbiter and Luna 3 (which used on-board film development processes) was not fogged
有人质疑胶卷在辐射下会‘起雾’,上面是wiki的回答。
关于月面温度,太阳出来的时候月球表面可以上升到120度,但因为月亮是真空,所以只有宇航员的脚接触的月面温度是120度。照相机用专门的金箔包裹,可以避免太阳直接照射产生的温度升高。这个方法很常见,所有的卫星看起来都金光闪闪的。另外选择的登陆时间都是月球的‘早晨’太阳刚出头的时候,这时月面温度相对比较低。注意月亮的一天是地球的28天。
There is no atmosphere to efficiently couple lunar surface heat to devices such as cameras not in direct contact with it. In a vacuum, only radiation remains as a heat transfer mechanism. The physics of radiative heat transfer are thoroughly understood, and the proper use of passive optical coatings and paints was adequate to control the temperature of the film within the cameras; lunar module temperatures were controlled with similar coatings that gave it its gold color. Also, while the Moon's surface does get very hot at lunar noon, every Apollo landing was made shortly after lunar sunrise at the landing site. During the longer stays, the astronauts did notice increased cooling loads on their spacesuits as the sun continued to rise and the surface temperature increased, but the effect was easily countered by the passive and active cooling systems.[13], pp. 165–167
- 相关回复 上下关系8
🙂无人飞船上的相机不是传统结构的,也无法被抛弃 1 潜水将军 字338 2007-10-30 07:56:06
🙂卫星上那个是长期使用,米国人就是拿出来用一下 1 夜月空山 字74 2007-10-29 03:35:57
🙂胶卷耐辐照能力不怎么样 黄河故人 字310 2007-10-29 03:53:17
🙂据wiki上的解释,胶卷是放在铁盒子里的
🙂美国太空行走的宇航服有21层 黄河故人 字136 2007-10-30 06:03:46
🙂21层有机材料也没有一层薄薄的金属皮防幅射能力强。 2 njyd 字140 2007-11-01 19:17:58
🙂月面温度问题,我是反对那个质疑的 1 夜月空山 字131 2007-10-29 04:08:44
🙂还有记得电影《摩羯星一号》的吗? 1 晨枫 字131 2007-10-28 10:38:26