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[文化博览] 【整理】2016-03-16 BBC:天才居里夫人:点亮世界的女人-18

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[Homework]【整理】2016-03-16 BBC:天才居里夫人:点亮世界的女人-18

Mary continued to work at Pierrie's operators. Until one day, whilst testing a substance called pitchblende, she got a result that sent the electrometer off the scale. This was the highest reading anyone has seen. And since it was so much stronger than uranium, it must be coming from an entirely new element. The question was what was it? Since pitchblende was a mixture of different elements jumbled together, somehow she had to free her new element from the compound material.                                                     -In Mary Curie's notebook, she talks about starting with a hundred grams of the material. We are losing, losing bits all over the plate. You know, it's really a substantial amount of rock, and this is really hardcore physical labour. You've just got to pound and grind. Until you've got a nice, fine, free floor material, and at that point, you can move really from the engineering into the chemistry. The next step is going to be actually trying to dissolve it up. And she would have chosen nitrous acid, because what she would not was this could dissolve up.

This post was generated by put listening repetition system,  Check [url=http://home.putclub.com/listen.php?url=http://download.putclub.com/newupdate/vaonline/Culture/People/putclub.com_Marie_Curie_Lit_Up_World_18.mp3&subject=2016-03-16  BBC:澶╂墠灞呴噷澶汉:鐐逛寒涓栫晫鐨勫コ浜
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