萬物簡史:PART III CH 9威力巨大的原子(1)
來源:滬江聽寫酷
2012-01-17 07:00
盡管哈勃和愛因斯坦已經(jīng)揭示了許多宇宙的奧妙,但是人們對于組成宇宙的基本物質(zhì)原子仍不了解。有科學(xué)家曾經(jīng)用這么一句話總結(jié)科學(xué)史“萬物皆由原子構(gòu)成”。原子的結(jié)構(gòu)甚微,分子又由兩個或兩個以上原子構(gòu)成。咖啡方糖大小的一團空氣里就有4500億億個??梢韵胂蠛棋挠钪嬷杏卸嗌贁?shù)不盡的原子~~~
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9 THE MIGHTY ATOM
WHILE EINSTEIN AND Hubble were productively [-1-] the large-scale structure of the cosmos, [---2---] : the tiny and ever-mysterious atom.
The great Caltech physicist Richard Feynman once observed that if you had to reduce scientific history to one important statement it would be "All things are made of atoms." They are everywhere and they [-3-] everything. Look around you. It is all atoms. [---4---] And they are there in numbers that you really cannot conceive.
The basic working arrangement of atoms is the molecule (from the Latin for "little mass"). [---5---]: add two atoms of hydrogen to one of oxygen and you have a molecule of water. [---6---] At sea level, at a temperature of 32 degrees Fahrenheit, [-7-] (that is, a space about the size of a sugar cube) will contain 45 billion billion molecules. And they are in every single cubic centimeter you see around you. Think how many cubic centimeters there are in the world outside your window—how many sugar cubes it would take to fill that view. Then think how many it would take to build a universe. Atoms, in short, are very [-8-].
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文中需聽寫單詞或詞組用[-No-]表示,句子用[---No---]表示。請邊聽寫邊理解文意,這樣可以提高聽力準確度,并為訓(xùn)練聽譯打下基礎(chǔ)哦~~~
9 THE MIGHTY ATOM
WHILE EINSTEIN AND Hubble were productively [-1-] the large-scale structure of the cosmos, [---2---] : the tiny and ever-mysterious atom.
The great Caltech physicist Richard Feynman once observed that if you had to reduce scientific history to one important statement it would be "All things are made of atoms." They are everywhere and they [-3-] everything. Look around you. It is all atoms. [---4---] And they are there in numbers that you really cannot conceive.
The basic working arrangement of atoms is the molecule (from the Latin for "little mass"). [---5---]: add two atoms of hydrogen to one of oxygen and you have a molecule of water. [---6---] At sea level, at a temperature of 32 degrees Fahrenheit, [-7-] (that is, a space about the size of a sugar cube) will contain 45 billion billion molecules. And they are in every single cubic centimeter you see around you. Think how many cubic centimeters there are in the world outside your window—how many sugar cubes it would take to fill that view. Then think how many it would take to build a universe. Atoms, in short, are very [-8-].
unraveling
others were struggling to understand something closer to hand but in its way just as remote
constitute
Not just the solid things like walls and tables and so forth, but the air in between.
A molecule is simply two or more atoms working together in a more or less stable arrangement
Chemists tend to think in terms of molecules rather than elements in much the way that writers tend to think in terms of words and not letters, so it is molecules they count, and these are numerous to say the least.
one cubic centimeter of air
abundant
第九章 威力巨大的原子
當愛因斯坦和哈勃在弄清宇宙的大尺度結(jié)構(gòu)方面成果累累的時候,另一些人在努力搞懂近在手邊的而從他們的角度來看又是非常遙遠的東西:微小而又永遠神秘的原子。
加州理工學(xué)院偉大的物理學(xué)家理查德?費曼有一次發(fā)現(xiàn),要是你不得不把科學(xué)史壓縮成一句重要的話,它就會是:"一切東西都是由原子構(gòu)成的。"哪里都有原子,原子構(gòu)成一切。你四下里望一眼,全是原子。不但墻壁、桌子等等這樣的固體是原子,中間的空氣也是原子。原子大量存在,多得簡直無法想像。
原子的基本工作形式是分子(源自拉丁文,意思是"小團物質(zhì)")。一個分子就是兩個或兩個以上以相對穩(wěn)定的形式一起工作的原子:一個氧原子加上兩個氫原子,你就得到一個水分子?;瘜W(xué)家往往以分子而不是以元素來考慮問題,就像作家往往以單詞而不是以字母來考慮問題一樣,因此他們計算的是分子。分子的數(shù)量起碼可以說是很多的。在海平面的高度、零攝氏度溫度的情況下,一立方厘米空氣(大約相當于一塊方糖所占的空間)所含的分子多達4500億億個。而你周圍的每一立方厘米空間都有這么多分子。想一想,你窗外的世界有多少個立方厘米--要用多少塊方糖才能填滿你的視野。然后再想一想,要多少個這樣的空間才能構(gòu)成宇宙??偠灾?,原子是很多的。
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