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会发生什么如果你假设发生在触摸一个极光吗

我认为,如果你碰到一个极光,它将给你辐射损伤吗?但是-90 c会冻结你的太阳风,比喻会发生什么呢?

回答

极光通常很高。大约一个世纪前,挪威科学家分析超过12000极光,这是他们发现分布:[![在这里输入图像描述][1]][1]图1(发怒者,1946)[2]。所以拳头的问题将是“触摸”在海拔100千米,那里的大气压力是海平面气压的0.00006%和0.0002%的珠穆朗玛峰的顶端的压力(压力估计使用[CalcTool] [3])。所以假设你使用非常薄的太空服,阻止身体爆炸,和让你活着。即使在这种情况下,空气太稀薄,其热容和电导率极低。因此,无论如果空气在-100°C或+ 300°C,你不会觉得,你的手指的温度是由热损失通过辐射(即你的热的手指会辐射红外辐射,很快变得非常冷)。视觉传播对象,所以它将是“触摸”云一样令人失望。你从来都不觉得你会在云的“边缘”和触摸它。你只是觉得你成为日益浓雾笼罩。至少是我的登山经验,从下面看起来像他们的顶部覆盖着厚厚的云层。 On airplanes the experience is quite similar. So I think you will just not realize you are at the edge of an aurora and you will just see a subtle glow in the air. Another important effect would be the radiation. You would get a big dose. I mention a bit of this in my answer to [this][4] question, however the formula there is not valid at 100 km. Because radiation increase exponentially the first 10-15 km as you go up, and then flattens ([Stozhkov et al, 2001][5]). Under normal conditions, at 100 km you would be receiving approximately 500 times more radiation than in the surface ([ref1][6],[ref2][7]), which is pretty much the same dose of outer space. That is not a big deal if you don't stay there very long. But auroras don't happen under normal conditions. However, radiation at surface levels during auroras go up but not by a large amount, so I don't think radiation will kill you. So, if you get up there with a space suit that keep you alive, I think your quest to touch the aurora will be rather disappointing. However, the view from up there would be amazing. You might want to see [this video of a weather balloon sent up under an aurora][8]. With cameras and radiation sensors. It is pretty cool, but it only got about a fifth of the way towards the aurora. And you can't get much higher with balloons, the [world record (unmanned) is 53 km][9], which is just half way there. These are a couple screenshot from that video: [![enter image description here][10]][10] [![enter image description here][11]][11] [1]: https://i.stack.imgur.com/TNt29.png [2]: https://onlinelibrary.wiley.com/doi/pdf/10.1029/TE051i004p00501 [3]: http://www.calctool.org/CALC/phys/default/pres_at_alt [4]: //www.hoelymoley.com/questions/14838/why-are-pole-reversals-not-more-detrimental-to-life/14844#14844 [5]: https://cds.cern.ch/record/557167/files/p41.pdf [6]: https://srag.jsc.nasa.gov/spaceradiation/faq/faq.cfm [7]: https://www.ncbi.nlm.nih.gov/pubmed/12056428 [8]: https://www.youtube.com/watch?v=vlyavVJ-ZXE [9]: https://en.wikipedia.org/wiki/High-altitude_balloon [10]: https://i.stack.imgur.com/PmoQ4.png [11]: https://i.stack.imgur.com/5nYUH.png

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\ begingroup美元 “扩散”是很重要的一部分。试图“触摸一个极光”就像试图“触摸蓝天”——你只看到它,因为通过一个巨大的厚度。一个“公平”的极光会太暗。 \ endgroup美元
- - - - - -jeffB
2018年8月20日13:02

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