# 托福TPO-26 Lecture 5(上)

Listen to part of a lecture in an art conservation class.

So far we have been talking all semester about restoring and preserving pieces of art, like ancient frescoes, early oil paintings, etc.

But although our field is called art conservation, it also involves… what?

Um...preserving other types of cultural materials too.

Very good. Not just art. Old artifacts are very valuable when they represent early technologies, all contain important historical information.

In fact, let me give you an example.

You've heard about the Greek scholar, Archimedes, who lived more than 2000 years ago, I am sure.

Archimedes was a great mathematician.

For example, he discovered the formula for the volume of a sphere.

Not much of his work has survived, but what has survived is brilliant.

And then in 1906, a palimpsest of Archimedes' writing was discovered.

Now, a palimpsest is a type of manuscript that contains writing that's hidden because something else was written over it later.

I'll explain in a minute.

This Archimedes palimpsest, as it's now called, is by far the most important palimpsest anyone has ever seen, because it contains the only known existing copy of Archimedes' treatise, called Method.

Archimedes shows in it how math can be applied to physics and physical reasoning back to math problems, which is how he calculated the volume of a sphere, for example.

This maybe commonplace today, but was revolutionary in his time.

A few years ago, the palimpsest was sold at an auction for two million dollars.

It could have ended up tucked away in a private collection, but fortunately, the collector who bought it has agreed to have experts restore every single word Archimedes wrote, so the contents can be shared with the world and studied.

 重点单词 查看全部解释 collector [kə'lektə] 想一想再看 n. 收集家，收税员 contain [kən'tein] 想一想再看 vt. 包含，容纳，克制，抑制vi. 自制 联想记忆 calculated ['kælkjuleitid] 想一想再看 adj. 计算出的；适合的；有计划的 v. 计算；估计； restore [ri'stɔ:] 想一想再看 vt. 恢复，修复，使复原 collection [kə'lekʃən] 想一想再看 n. 收集，收取，聚集，收藏品，募捐 联想记忆 valuable ['væljuəbl] 想一想再看 adj. 贵重的，有价值的n. (pl.)贵 联想记忆 brilliant ['briljənt] 想一想再看 adj. 卓越的，光辉的，灿烂的n. 宝石 联想记忆 formula ['fɔ:mjulə] 想一想再看 n. 公式，配方，规则；代乳品adj. （赛 联想记忆 revolutionary [.revə'lu:ʃənəri] 想一想再看 adj. 革命的n. 革命者 manuscript ['mænjuskript] 想一想再看 adj. 手抄的n. 手稿，原稿 联想记忆
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阅读本文的人还阅读了：
• 托福TPO-26 Lecture 4(上) 2015-12-09
• 托福TPO-26 Lecture 4(下) 2015-12-10
• 托福TPO-26 Lecture 5(中) 2015-12-17
• 托福TPO-26 Lecture 5(下) 2015-12-18
• 托福TPO-27 Conversation 1 2015-12-22

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