评论
打印
GRB 080319B was the most violent event everobserved-especially for the people who were floating right next to it withsurfboards.
GRB#0103898是观测到的最为剧烈的超新星——尤其是对就飘在它旁边的人来说
The idea of neutrino radiation damagereinforces just how big supernovae are. If you observed a supernova from 1 AUaway-and you somehow avoided being incinerated, vaporized, and converted tosome type of exotic plasma-even the flood of ghostly neutrinos would be denseenough to kill you.
中微子辐射伤害的计算进一步加深了你对超新星究竟有多大的理解。如果你在一个天文单位外观察超新星——并且通过某种手段你没有烧起来，也没有气化，或是变成某种奇异等离子体——那么单单是汹涌而来的幽灵般的中微子就足够置你于死地。
If it's going fast enough, a feather canabsolutely knock you over.
如果速度够快的话，一根羽毛也绝对能把你撞倒。
1 Less often if you're a child, since youhave fewer atoms to be hit. Statistically, your first neutrino interactionprobably happens somewhere around age ten.
1．如果你是个孩子的话频率可能更低一些，因为你身体里的原子也少嘛。从统计学角度来看，中微子第一次撞击到我身体里的某个原子应该是在我10岁左右的时候。
2 Which would still be less than 1 percentof the ants in the world.
2．只占全世界蚂蚁的1％还不到。
3 If you want to be mean to first-year calculusstudents, you can ask them to take the derivative of ln(x)e dx. It looks likeit should be “1”or something, but it's not.
3．如果你想为难刚学微积分的学生的话，问他们ln(x)e的导数是什么。看上去应该是1或者其他什么简单的表达式，但其实不是。
4 “Supernovas”is also fine. “Supernovii”isdiscouraged.
4．拼成supernovas还说得过去，拼成supernovii就算了吧。
5 3.262 light-years, or a little less thanthe distance from here to Alpha Centauri.
5．约3.262光年，或者说比地球到半人马座α的距离略短一些。
6 “Radiation Dose Chart,”http://xkcd.com/radiation.
6．辐射计量表：http://xkcd.com/radiation
Q. A toxin blocks the ability of thenephron tubule reabsorption but does not affect filtration. What are thepossible short-term effects of this toxin?
Q．如果有一种毒药能够阻断肾小管的再吸收功能，但不影响过滤功能，那么服用这种毒药在短期内会产生什么影响？
Q. If a Venus fly trap could eat a person,about how long would it take for the human to be fully de-juiced and absorbed?
Q．如果捕蝇草可以吃人，那么一个人大约需要多久才会被捕蝇草完全液化并吸收呢？
