n. 描寫,描述,說明書,作圖,類型
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READING FRANKLIN'S FAMOUS KITE EXPERIMENT
閱讀 富蘭克林的著名風箏 實驗
In the eighteenth century,
在18世紀,
Benjamin Franklin conducted a number of experiments in which he showed what electricity is.
本杰明。富蘭克林做了一系列試驗,以證明電是什么。
Here is how he described one of his experiments.
請看他是如何描述他其中的一次實驗的:
In June 1752,
1752年6月,
I wanted to show that lightning and electricity are the same.
我想演示閃電和電是一回事。
Having realised that I could use a kite to attract lightning
意識到可以使用風箏來吸引閃電之后,
I decided to do an experiment.
我便決定做一次實驗。
I built a strong kite and waited for bad weather.
我做了一個結實的風箏,等待著糟糕的天氣。
When the first thunderstorm came,
當第一次雷暴來臨時,
I took my condenser to a shed in the fields where I could do my experiment.
我把我的電容器帶到田間座可以做實驗的小屋
My son helped me fly the kite.
我的兒子幫我放風箏。
The kite flew high in the rainy sky,but nothing happened.
風箏在下雨的空中飛得很高,但什么事情也沒有發生。
I was beginning to think that the experiment would not work.
我開始想這次實驗要失敗了。
Just then ,I saw some of the hairs on the string stand up.
正在此時,我看到細繩上的一些毛發豎了起來。
The string was getting charged!
細繩帶電了!
I brought my finger close to the key
我把自己的手指靠近鑰匙
and felt a light but very clear electric shock.
能感到輕微但很明顯的電擊。
Others followed even before the whole string was wet,
細繩上的其他細毛在風箏線被打濕之前也隨之立了起來,
and I was able to collect and store a great deal of electricity in the condenser.
這樣我就能夠把大量的電收集在電容器中。
This experiment proves that lightning and electricity are the same.
這次實驗證明了閃電和電是一回事。
To do the experiment you need four things:
要做這樣的實驗你需要四件東西:
a kite,a key,some really bad weather and a condenser to store electricity.
一個風箏,一個鑰匙,惡劣的天氣和一個采集并貯存電的電容器。
Most kites are made of paper,
大多數風箏都是紙做的
but a kite made of silk
但是絲綢做的風箏
will not tear so soon in weather with rain and strong winds.
在暴風雨的天氣中能夠持續使用更長的時間。
Build the frame of the kite
這樣先搭起一個風箏框架。
by making a small cross of two pieces of light wood.
用兩根很輕的小木條做成一個小十字架,
The pieces should be just long enough to reach the corners of the handkerchief.
兩根木條的長度應該足以夠到手絹的四角。
Tie the corners of the handkerchief to the points of the cross,
把手絹的四角系在十字架上,
and you will have a nice strong kite.
這樣你就可以做成一個很好,很結實的風箏。
Add a tail to the frame and tie a long string to the cross
給風箏的框架加上一個尾巴,
so you can controlthe kite.
在十字架上系上一個長細以便你控制風箏。
The next steps are very important.
接下來的三個步驟十分重要。
First,fix a very sharp piece of metal pointing a foot or more above the frame
首先,在十字架骨架較長的一根木棍的端部固定一根金屬絲,
to the top of the longest stick of the cross.
使它比框架長出一英尺或更長的一些。
Second,fasten a key to the end of the long string.
其次,把鑰匙固定在那根長細繩的的末端。
Third,tie a silk ribbon to the string just above the key.
第三,在細繩上系上一條絲帶,正好超過鑰匙。
This ribbon,which must not get wet,will protect you from the electricity
這個絲帶不要浸濕,它可以保護你不受電擊。
Fly the kite when a thunderstorm appears to be coming on.
在暴風雨即將來臨的時候去做風箏。
Stand inside a door,
站在門里
or under some cover,so that the silk ribbon does not get wet.
或遮蓋物下面,以便絲帶不被弄濕。
Take care that the string does not touch the wall or the door.
小心別讓細繩碰到墻上或門上。
When a thundercloud comes over the kite,
當雷雨云籠罩了風箏之后。
the sharp piece of metal will pull the electricity from the cloud.
金屬絲會把電傳導過來,
The kite and the string will become charged.
這樣,風箏和細繩也就帶電了。
When the kite and the string are wet from the rain,
當風箏和細繩在雨中浸濕的時候,
they will conduct the electricity very well.
它們會充分地導電,
You can collect and store the electricity in the condenser
這樣你就能把電收集并貯存在電容中
and use it for other experiments.
并用它做其他的實驗。
重點單詞 | 查看全部解釋 | |||
description | [di'skripʃən] |
想一想再看 |
聯想記憶 | |
fasten | ['fæsn] |
想一想再看 vt. 拴緊,使固定,系,強加于 |
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spread | [spred] |
想一想再看 v. 伸展,展開,傳播,散布,鋪開,涂撒 |
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frame | [freim] |
想一想再看 n. 框,結構,骨架 |
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separate | ['sepəreit] |
想一想再看 n. 分開,抽印本 |
||
conduct | [kən'dʌkt] |
想一想再看 n. 行為,舉動,品行 |
聯想記憶 | |
tear | [tiə] |
想一想再看 n. 眼淚,(撕破的)洞或裂縫,撕扯 |
聯想記憶 | |
rainbow | ['reinbəu] |
想一想再看 n. 彩虹 |
||
technique | [tek'ni:k] |
想一想再看 n. 技術,技巧,技能 |
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stapler | ['steiplə] |
想一想再看 n. 釘書機 |
聯想記憶 |

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