Name: 橡皮怎麼擦？ (How Do Erasers Erase?)
Uploaded: 2021-01-14T06:21:29.000Z
Duration: 2 min 49 s

- 我是克里斯汀，這裡是 "腦東西

And there are plenty of things I'd like to erase.

曾經看過《慾望都市》第二部、

Unfortunately, a lot of marks in this world are permanent,

不幸的是，這個世界上的很多印記都是永久性的、

Yes, the humble pencil, or not so humble,

是的，簡陋的鉛筆，或者說並不簡陋的鉛筆、

so no, you can't get lead poisoning from a pencil wound.

所以，鉛筆傷不會導致鉛中毒。

which is a soft mineral made up of flaky,

這是一種由片狀礦物組成的軟礦物質、

Ever since the 1790s that graphite has been mixed

自 17 世紀 90 年代以來，石墨就一直被混合使用。

with clay to achieve different pencil lead hardnesses.

用粘土來達到不同的鉛筆芯硬度。

As you write or draw flakes of this clay and graphite mix

當你書寫或繪製這種粘土和石墨混合物的薄片時

cling to the fibers that make up your piece of paper.

and the flakes will gladly stick around for decades

But erasers can lift those flakes right off the page

但橡皮擦可以將書頁上的紙屑擦掉

by virtue of being stickier than the paper fibers.

Since the flakes are just hanging onto the paper,

not unlike thousands of tiny clay and graphite

不亞於成千上萬的微小粘土和石墨

anything stickier than paper can lift them off.

任何比紙更粘的東西都能把它們揭下來。

In fact, the earliest erasers going back to at least

事實上，最早的橡皮擦至少可以追溯到

slightly moistened and balled up pieces of bread.

稍稍潤溼並揉成一團的麵包片。

到 19 世紀，人們開始使用橡皮擦

from certain trees which excrete it to discourage

某些樹木會排洩這種物質，以阻止

that this tree latex stuff is great when you use

But because natural latex rubber can be expensive

由以石油為基礎的合成橡膠製成

Your standard pink eraser has bits of pumice added

標準的粉色橡皮擦中添加了浮石碎屑

這是一種廉價的方法，有助於去除

flakes of graphite from those paper fibers.

從這些紙纖維中剝離出石墨片。

And magic erasers work on a similar principle.

神奇橡皮擦的工作原理與此類似。

they contain rigid micro structures that trap dirt.

它們含有能吸附汙垢的剛性微結構。

They're effective on way more than just pencil marks.

What would you erase if you had the chance?

make it official and subscribe so you won't

使其正式化並訂閱，這樣您就不會

And if you're just pining for more stuff from us,

如果你只是渴望從我們這裡得到更多的東西、

字幕列表影片播放

橡皮怎麼擦？ (How Do Erasers Erase?)

stuff

lead

standard

surface