万物简史 第12期:如何营造一个宇宙(4)

 　　There is of course a great deal we don't know, and much of what we think we know we haven't known, or thought we've known, for long. Even the notion of the Big Bang is quite a recent one.

　　当然，有大量的事情我们不知道，还有大量的事情我们现在或在过去很长时间里以为自己知道而其实并不知道。连大爆炸理论也是不久以前才提出来的。

　　The idea had been kicking around since the 1920s, when Georges Lemaitre, a Belgian priest-scholar, first tentatively proposed it, but it didn't really become an active notion in cosmology until the mid-1960s when two young radio astronomers¹ made an extraordinary and inadvertent discovery.

　　这个概念自20世纪20年代以来一直很流行，是一位名叫乔治·勒梅特的比利时教士兼学者首先提出了这种假设。但是，直到20世纪60年代中，这种理论才在宇宙学界活跃起来。当时，两位年轻的射电天文学家无意中发现了一种非同寻常的现象。

　　Their names were Arno Penzias and Robert Wilson. In 1965, they were trying to make use of a large communications antenna² owned by Bell Laboratories at Holmdel, New Jersey³, but they were troubled by a persistent⁴ background noise—a steady, steamy hiss⁵ that made any experimental work impossible.

　　他们的名字分别叫做阿诺·彭齐亚斯和罗伯特·威尔逊。1965年，他们在美国新泽西州霍尔姆德尔的贝尔实验室，想要使用一根大型通信天线，可是不断受到一个本底噪声--一种连续不断的蒸汽般的咝咝声的干扰，使得实验无法进行下去。

　　The noise was unrelenting and unfocused. It came from every point in the sky, day and night, through every season. For a year the young astronomers did everything they could think of to track down and eliminate the noise.

　　那个噪声是一刻不停的，很不集中的。它来自天空的各个方位，日日夜夜，一年四季。有一年时间，两位年轻的天文学家想尽了办法，想要跟踪和除去这个噪声。

　　They tested every electrical system. They rebuilt instruments, checked circuits, wiggled wires, dusted plugs. They climbed into the dish and placed duct tape over every seam and rivet⁶. They climbed back into the dish with brooms and scrubbing brushes and carefully swept it clean of what they referred to in a later paper as "white dielectric material," or what is known more commonly as bird shit. Nothing they tried worked.

　　他们测试了每个电器系统。他们重新组装了仪器，检查了线路，察看了电线，掸掉了插座上的灰尘。他们爬进抛物面天线，用管道胶布盖住每一条接缝，每一颗铆钉。他们拿起扫帚和抹布再次爬进抛物面天线，小心翼翼地把他们后来在一篇论文中称之为"白色电介质"的、用更通常的说法是鸟粪的东西扫得干干净净。可是他们的努力丝毫不起作用。

 

1 astronomers   

n.天文学者，天文学家( astronomer的名词复数 )

参考例句：

• Astronomers can accurately foretell the date,time,and length of future eclipses. 天文学家能精确地预告未来日食月食的日期、时刻和时长。 来自《简明英汉词典》
• Astronomers used to ask why only Saturn has rings. 天文学家们过去一直感到奇怪，为什么只有土星有光环。 来自《简明英汉词典》

2 antenna   

n.触角，触须；天线

参考例句：

• The workman fixed the antenna to the roof of the house.工人把天线固定在房顶上。
• In our village, there is an antenna on every roof for receiving TV signals.在我们村里，每家房顶上都有天线接收电视信号。

3 jersey   

n.运动衫

参考例句：

• He wears a cotton jersey when he plays football.他穿运动衫踢足球。
• They were dressed alike in blue jersey and knickers.他们穿着一致，都是蓝色的运动衫和灯笼短裤。

4 persistent   

adj.坚持不懈的，执意的；持续的

参考例句：

• Albert had a persistent headache that lasted for three days.艾伯特连续头痛了三天。
• She felt embarrassed by his persistent attentions.他不时地向她大献殷勤，使她很难为情。

5 hiss   

v.发出嘶嘶声；发嘘声表示不满

参考例句：

• We can hear the hiss of air escaping from a tire.我们能听到一只轮胎的嘶嘶漏气声。
• Don't hiss at the speaker.不要嘘演讲人。

6 rivet   

n.铆钉；vt.铆接，铆牢；集中(目光或注意力)

参考例句：

• They were taught how to bore rivet holes in the sides of ships.有人教他们如何在船的舷侧钻铆孔。
• The rivet heads are in good condition and without abrasion.铆钉钉头状况良好，并无过度磨损。