万物简史 第128期:势不两立的科学(29)

 Other scientists besides Kelvin turned their minds to the problem and came up with results that only deepened the uncertainty¹. Samuel Haughton, a respected geologist² at Trinity College in Dublin, announced an estimated age for the Earth of 2,300 million years—way beyond anything anybody else was suggesting. When this was drawn³ to his attention, he recalculated using the same data and put the figure at 153 million years. John Joly, also of Trinity, decided⁴ to give Edmond Halley's ocean salts idea a whirl, but his method was based on so many faulty assumptions that he was hopelessly adrift. He calculated that the Earth was 89 million years old—an age that fit neatly⁵ enough with Kelvin's assumptions but unfortunately not with reality.

除开尔文以外，别的科学家也把注意力转向这个问题，得出的结果只是加深了那种不确定性。都柏林的三一学院有一位受人尊敬的地质学家，名叫塞缪尔·霍顿。他宣称，地球的年龄约为23亿年——大大超出了任何人的看法。他注意到了这个情况，用同样的数据重新算了一遍，得出的数字是1.53亿年。也是三一学院的约翰·乔利决定试一试埃德蒙·哈雷提出的海盐测算法，但这种方法是以许多不完善的假设为基础的，他只好顺水推舟地干了一下。他得出的结果是：地球的年龄是8900万年——这个年龄与开尔文的假设完全吻合，不幸的是与现实根本不符。

Such was the confusion that by the close of the nineteenth century, depending on which text you consulted, you could learn that the number of years that stood between us and the dawn of complex life in the Cambrian period was 3 million, 18 million, 600 million, 794 million, or 2.4 billion—or some other number within that range. As late as 1910, one of the most respected estimates, by the American George Becker, put the Earth's age at perhaps as little as 55 million years.

情况如此混乱，到19世纪末，你可以获知——取决于你查的是哪种资料——我们距离开始出现复杂生命的寒武纪的年数是300万年、1800万年、6亿年、7.94亿年或24亿年——或者是这个范围里其他数量的年。直到1910年，美国人乔治·贝克尔才作出了一个最受人尊重的估计，他认为地球的年龄也许不超过5500万年。

Just when matters seemed most intractably confused, along came another extraordinary figure with a novel approach. He was a bluff⁶ and brilliant New Zealand farm boy named Ernest Rutherford, and he produced pretty well irrefutable evidence that the Earth was at least many hundreds of millions of years old, probably rather more.

正当事情似乎乱作一团的时候，出了另一位杰出人物，有了一种崭新的方法。他是个直率而又聪明的新西兰农家孩子，名叫欧内斯特·卢瑟福。他拿出了无可辩驳的证据：地球至少已经存在许多亿年，很可能还更古老。

Remarkably⁷, his evidence was based on alchemy—natural, spontaneous, scientifically credible⁸, and wholly non-occult, but alchemy nonetheless. Newton, it turned out, had not been so wrong after all. And exactly how that came to be is of course another story.

值得注意的是，他的证据是以炼金术为基础的——天然，自发，科学上信得过，毫不神秘，尽管是炼金术。结果证明，牛顿毕竟没有大错。那种方法到底是怎么知道的，当然要等下一章来叙述。

1 uncertainty   

n.易变，靠不住，不确知，不确定的事物

参考例句：

• Her comments will add to the uncertainty of the situation.她的批评将会使局势更加不稳定。
• After six weeks of uncertainty,the strain was beginning to take its toll.6个星期的忐忑不安后，压力开始产生影响了。

2 geologist   

n.地质学家

参考例句：

• The geologist found many uncovered fossils in the valley.在那山谷里，地质学家发现了许多裸露的化石。
• He was a geologist,rated by his cronies as the best in the business.他是一位地质学家，被他的老朋友们看做是这门行当中最好的一位。

3 drawn   

v.拖，拉，拔出；adj.憔悴的，紧张的

参考例句：

• All the characters in the story are drawn from life.故事中的所有人物都取材于生活。
• Her gaze was drawn irresistibly to the scene outside.她的目光禁不住被外面的风景所吸引。

4 decided   

adj.决定了的，坚决的；明显的，明确的

参考例句：

• This gave them a decided advantage over their opponents.这使他们比对手具有明显的优势。
• There is a decided difference between British and Chinese way of greeting.英国人和中国人打招呼的方式有很明显的区别。

5 neatly   

adv.整洁地，干净地，灵巧地，熟练地

参考例句：

• Sailors know how to wind up a long rope neatly.水手们知道怎样把一条大绳利落地缠好。
• The child's dress is neatly gathered at the neck.那孩子的衣服在领口处打着整齐的皱褶。

6 bluff   

v.虚张声势，用假象骗人；n.虚张声势，欺骗

参考例句：

• His threats are merely bluff.他的威胁仅仅是虚张声势。
• John is a deep card.No one can bluff him easily.约翰是个机灵鬼。谁也不容易欺骗他。

7 remarkably   

ad.不同寻常地，相当地

参考例句：

• I thought she was remarkably restrained in the circumstances. 我认为她在那种情况下非常克制。
• He made a remarkably swift recovery. 他康复得相当快。

8 credible   

adj.可信任的，可靠的

参考例句：

• The news report is hardly credible.这则新闻报道令人难以置信。
• Is there a credible alternative to the nuclear deterrent?是否有可以取代核威慑力量的可靠办法？