Name: 【TED-Ed】Robert Full 談向壁虎學習 - Curiosity, discovery and gecko feet
Uploaded: 2013-06-09T15:10:04.000Z
Duration: 9 min 11 s

程度副詞

Science is not a simple recipe in a cookbook,

and learning is not memorizing facts for tests.

We have to look at how curiosity can ultimately benefit society

我們要來看看 好奇心如何貢獻社會

藉由一個過程，從參與（involvement）

And I'd like to illustrate this by telling you the real story

我要用一個真實故事來說明這點

about how we discovered how geckos stick.

是關於我們發現 壁虎如何吸附東西的故事

You need to do curiosity-driven research yourself.

We know that learning by being an active researcher

我們知道成為一個積極的研究者

它是一隻睫角守宮（crested gecko）

and we're going to use a high speed camera

that can capture up to 1,000 pictures in one second.

"So how do their feet stick and unstick so quickly?"

「牠們的腳如何在 吸附與不吸附之間快速地轉換？」

我們很好奇，這很不可思議，對吧？

Well it turns out, it was already known that the geckos have hairy toes,

大家已經知道壁虎有長滿細毛的腳趾

and those hairs are really small compared to your hair,

跟你的頭髮比起來 這些毛非常細小

and the little tips at the end are even smaller.

who is not much older than some of you when she did this,

and we told that her that in order to do this,

you'd have to measure the force of a single hair.

我見過最簡單、也最漂亮的測量儀器

and then she began pushing it into the metal beam.

Now she was very frustrated for months - it didn't stick.

有好幾個月她非常灰心 因為它並不會吸附

But she had figured out she had to orient it

And there's the little split ends grabbing the beam in that little window.

細毛末端有小小的分叉 會抓住小視窗裡的金屬桿

she measured the force of a single gecko hair

a completely new way to stick to something,

something no human has ever known before.

and each hair has the worst case of split ends possible,

100 to 1,000 nano-tips that an animal has on one hair,

每根細毛上的分岔 約長 1 百到 1 千個奈米

It was discovered that they stick by inter-molecular forces alone,

我們發現牠們只靠 分子間作用力吸附東西

and you'll learn this in Chemistry and Physics, if you take it.

若選修化學或物理課，你就會學到

It's a whole new way of thinking about making an adhesive!

這是一種對於 黏著東西的全新想法！

Why are the gecko's feet looking like this?

為什麼壁虎的腳趾長得像這樣？

They have bizarre toes and we don't know why.

牠們腳趾的樣子奇特 而我們不知道原因

If you go into a museum and look at each gecko species,

如果你到博物館， 然後看看每一種壁虎

different lengths, and thicknesses, and patterns.

不同長度、不同厚度、不同樣式

But you should come to Berkeley and help me figure this out.

但是你們應該 來柏克萊大學幫我

There is even more stuff that is unknown.

but recently it was found that they also can secrete silk from their feet,

但最近發現牠們 也可以從牠們的腳吐絲

not just their behind, like you know they do.

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【TED-Ed】Robert Full 談向壁虎學習 - Curiosity, discovery and gecko feet

hair

hairy

student

animal