跟讀練習: 5 Fun Physics Phenomena - 通過影片學習英語口語

選擇練習模式

每種模式都會開啟全屏練習室。

70 句

如果句子過短或過長，請點選 Edit 進行調整。

Five fun physics phenomena.

Number one: Have a friend hold a cane out horizontally for you or another similar object,

and putting your two index fingers together try to place them underneath the center of mass.

When they let go, you will find it doesn't normally work.

But, Now try putting each index finger at opposite ends of the cane, and then moving your index fingers in towards the middle.

what you will find is that they always end up right under the center of mass of the cane.

You can try starting off asymmetrically.

and they will still end up under the center of mass.

You can try going at different speeds really slowly.

you Or really fast?

but you still end up perfectly under the center of mass.

How does this work?

Number two: The Phone Flip.

Have you ever tried to spin your phone?

If you do it in this direction, it's pretty easy.

It stays nicely aligned.

If you spin it along its short axis, you'll also find it spins very well.

But, if you try to flip your phone end over end like this, you can't do it cleanly.

The phone will never flip simply end over end without also rotating in one of the other directions.

Even when I make an almost perfect flip, instabilities grow until the phone rotates around another axis.

Why can't...

No, I still can't do it.

Why is it so?

Number three.

You've probably seen that if you rub a cup on your hair, you can make it electrically charged, and if you bring it close to a stream of water,

you can actually cause that stream to deflect.

Now usually this is used in chemistry textbooks as a demonstration of the polar nature of water.

Water is a molecule with a more positive side and a more negative side.

And so what happens, so you're told, is that the water molecule flips around

so the positive side of the water faces the negative side of the cup

and that is what attracts the water to the cup.

But this is not the real explanation.

If you have a uniform electric field, there's an equal force pulling the positive side towards it as there is pushing the negative side away from it.

And so you can't actually do more than just turn the molecules.

you would need a really, really strong gradient in your electric field to make this work at all

and it basically is just not going to happen from a cup.

So why is the stream actually attracted to a charged cup?

That is the question.

Number 4 Take a piece of your favorite cereal and drop it into a bowl of water.

Then, using a very strong magnet, try to pull the cereal around.

Bye.

Isn't that cool?

So why is cereal magnetic?

And finally, five: the teabag rocket.

Take a tea bag and cut off the sealed end very carefully.

Now dump out the tea.

Form the tea bag into a square column.

and balance it on the plate.

Now, light the top of the teabag on fire.

Try to light it evenly on all sides.

Get ready for takeoff in three, two, one.

Ha, yeah!

That is the beauty of the T -Bag Rocket.

So why did that happen?

So how do all of these phenomena work?

Let me know in the comments, or make a video explaining any or all of them, or subscribe to the channel, and I'll post the answers next week.

I hope you enjoyed those fun physics phenomena.

I know a guy who would, the former commander of the International Space Station, Commander Chris Hatfield.

I'm actually hosting live events with him in late August in Sydney and Canberra.

I am so looking forward to that.

Now the Sydney shows are all sold out, but there are still, as of now, tickets to the Canberra show.

So if you want to come to that, check out the link in the description.

Now Chris Hatfield actually wrote a book called "An Astronaut's Guide to Life on Earth."

people who want to become astronauts but also for everyone who wants to lead a meaningful life here on Earth.

And you can download this book for free

if you like by going to audible .com /veritasium

or you can pick any other book of your choosing for a one -month free trial.

Audible is a great service with over a hundred and fifty thousand titles in all areas of literature including fiction, nonfiction, and periodicals and so you can find virtually anything you want there

and by going to audible .com /veritasium they know that I sent you videos for you for free.

So I really want to thank Audible for supporting me and I want to thank you for watching.

下載應用

流利口語所需的一切

AI 發音評分逐句打分

音標練習掌握每個音

詞彙學習建立你的詞庫

詞彙遊戲邊玩邊學

掃碼

Download on theApp Store Get it onGoogle Play

同頻道

FOR YOU

本課的詞彙與口語要點

這段影片共有 70 個句子、811 個單詞可供跟讀。講話部分時長為 5:23。說話人語速自然，每分鐘約 151 個詞，接近日常對話。 84% 的單詞屬於英語最常用的 3,000 詞，其餘的詞建議在練習前先學一下。

影片中的重點詞彙

影片中 15 個值得學習的單詞，附發音和釋義：

單詞	發音	釋義
finger 名詞	/ˈfɪŋɡɚ/	手指, 指頭 /指頭
spin 動詞	/spɪn/	轉動 /轉動, 自轉 /自轉
phenomenon 名詞	/fəˈnɒm.ɪ.nən/	現象 /現象
cane 名詞	/keɪn/	莖 /莖
cereal 名詞	/ˈsɪə.ɹɪ.əl/	穀物 /穀物, 穀類 /穀類
molecule 名詞	/ˈmɑ.lɪ.kjul/	分子
physics 名詞	/ˈfɪz.ɪks/	物理學 /物理學
rocket 名詞	/ˈɹɑk.ɪt/	火箭發動機 /火箭發動機, 火箭
attract 動詞	/əˈtɹækt/	吸引
axis 名詞	/ˈæksɪs/	軸 /軸, 軸心 /軸心
rotate 動詞	/ˈɹoʊ.teɪt/	旋轉, 轉動
carefully 副詞	/ˈkɛɹf(ə)li/	小心地
explanation 名詞	/ˌɛkspləˈneɪʃən/	解釋 /解釋, 說明 /說明
fiction 名詞	/ˈfɪkʃən/	虛構文學 /虛構文學, 小說 /小說
chemistry 名詞	/ˈkɛm.ɪ.stɹi/	化學 /化學

影片中出現的短語動詞

單詞	發音	釋義
end up 動詞		到達
check out 動詞		退房
cut off 動詞	/ˌkʌt ˈɔf/ [ˌkɐɾ ˈɔf]	切下, 割下
look forward to 動詞		期待, 嚮往
sold out 形容詞		賣完 /賣完, 售完

需要注意的發音

說話人用了 11 次縮略和弱讀形式，例如 can't, doesn't, I'll。請按聽到的簡短形式來說。

“sh” 和 “zh” 音: explanation /ˌɛkspləˈneɪʃən/, fiction /ˈfɪkʃən/, demonstration /dɛmənˈstɹeɪʃən/
長單詞——注意重音位置: phenomenon /fəˈnɒm.ɪ.nən/, explanation /ˌɛkspləˈneɪʃən/, virtually /ˈvɚ.t͡ʃə.wə.li/, demonstration /dɛmənˈstɹeɪʃən/, instability /ɪnstəˈbɪlɪti/

如何用這段影片練習

先完整聽一遍影片，不要開口，記下不認識的單詞。
先用 0.75 倍速逐句跟讀，熟練之後再回到正常速度。
錄下自己的聲音並與原聲對比，特別注意 finger, spin, phenomenon 這類單詞。

影片中的語法

說話人最常用的結構，並附上影片中的原話：

結構	影片中的用法
現在完成時 have/has + 過去分詞 — 過去發生但與現在仍有關聯的事	Have you ever tried · You've probably seen
定語從句 who / which + 從句 — 補充說明人或事物	guy who would · people who want

什麼是跟讀法？

跟讀法 (Shadowing) 是一種有科學依據的語言學習技巧，最初開發用於專業口譯員的培訓，並由多語言者Alexander Arguelles博士普及。這個方法簡單而強大：您在聽英語母語原聲的同時立即大聲重複——就像是一個延遲1-2秒緊跟說話者的影子。與被動聽力或語法練習不同，跟讀法強迫您的大腦和口腔肌肉同時處理並模模擬實的講話模式。研究表明它能顯著提高發音準確性，語調，節奏，連讀，聽力理解和口語流利度——使其成為雅思口語備考和真實英語交流最有效的方法之一。

影子跟讀法: 閱讀完整分步指南 →

跟讀練習: 5 Fun Physics Phenomena - 通過影片學習英語口語

選擇練習模式

下載應用

Something is jamming GPS over Europe. Here's what we found

Why It Was Almost Impossible to Make the Blue LED

You've (Likely) Been Playing The Game Of Life Wrong

We're trying something new...

How does light 'know' the shortest path?

Why does every mammal get 1 billion heartbeats in their life?

Why Cold Drinks Were Deadly Before 1914

Exposing The Flaw In Our Phone System

Our Greatest Delusion

The Most Controversial Problem in Philosophy

We've Been Using The Wrong Science In Court For 50 years

Explaining Pi With Pizza

The Absurd Engineering Behind the Internet

The Most Misunderstood Concept in Physics

Falling ladders - why does this happen?

How a slinky falls in slow motion #shorts

We're 99.9% sure this pattern is true, but no one can prove it

What is the secret of a good life? Lessons from the longest study on happiness

How An Infinite Hotel Ran Out Of Room

Is spider web really stronger than steel?

LET THERE BE... Voltage? | Maxwell's Equation #2 Explained for Beginners

Bare Hand Bottle Busting- Science Investigation

How Long Can You Balance a Pencil?

The Professor Who Taught People How To Think (1962)

I bought the most SATISFYING TECH on the internet.

What If you Could See the 4th Dimension?

Can You Define Energy?

Walter Lewin explains Newton's third law

How Water Shapes the Land: Crash Course Geology #9

How Quantum Batteries Break Every Rule of Charging

Vectors and 2D Motion: Crash Course Physics #4

How to Learn Faster with the Feynman Technique (Example Included)