bbc化学史2字幕(2)
25页1、In , a wild-haired Russianchemist had an extraordinary vision.Hed been struggling witha mysterythat had perplexedscientists for generations.And for the very first time, hedglimpsed natures building blocks,the elements,arranged in their natural order.His name was Dmitri Mendeleev,and he was on the brink of crackingthe secret code of the Cosmos,what was to become one of mansmost beautiful creations,the Periodic Table of Elements.This is the story of those elements,the building blocks that make upt
2、he universe.the remarkable taleof their discovery,and how they fit together, revealshow the modern world was made.My names Jim Al-Khalili.And ever since I started studyingthe mysteries of matter,Ive been fascinated bychemistrys explosive history.Ho-ho! Brilliant!.Ive discovered someexciting elements.Thats fantastic!.and Ive seen how chemistrywas forgedin the furnaces of the alchemists.Now Im going to continuemy journey.Ill take up the questof the chemical pioneers.Well, my arms burning up.as the
3、y struggled to make senseof elemental chaosand conquerour fundamental fear of disorder.Could there be a grand planunderlying the elements?Ill take part in somevolatile experiments.Now were going to dropin the potassium.Wow, look at that! Wahey!.and witness somefiery reactions.And Ill find out how the hiddenorder of the natural worldwas revealed in all its glory -the order of the elements.As a nuclear physicist,Ive spent a lifetime studyingthe sub-atomic world,the basic building blocksof matter.B
4、ut to do that, I need to understandthe ingredients of OUR world.the elements.Our planet was createdfrom just elements.The ground we walk on, the air thatwe breathe, the stars we gaze at,even us.Our bodies areentirely made of elements.We now know the name and numberof every naturally-occurringelement in existence.But years ago,those elements were only justbeginning to give up their secrets.At the beginningof the th century,only had been discovered,from liquid mercuryto dazzling magnesium.and vola
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