Name: 如何拋出完美的足球螺旋 (How To Throw The Perfect Football Spiral)
Uploaded: 2020-10-23T18:41:15.000Z
Duration: 6 min 59 s

That's the highest completion percentage in league history.

這是聯盟歷史上最高的完成率。

all of those successfully completed passes

They were thrown with a nice, tight spiral.

他們被扔得很好，緊緊地旋轉著。

But throwing a perfect spiral isn't as easy as it looks.

但拋出一個完美的螺旋並不像看起來那麼容易。

First, we have to answer one basic question:

首先，我們要回答一個基本問題。

為了回答這個問題，我們找了一位專家。

the quarterbacks coach here for Columbia University.

that are crucial to how they hold the ball.

Larsen: We're gonna orient the best we can

and then we're just gonna wrap our fingers down

然後，我們只是要去 纏我們的手指下來，

Narrator: After that, the quarterback's goal

所以，首先，他們會把球裝回去。

This helps to ensure that the quarterback is

what's called being "on top of the ball."

the quarterback won't be able to throw as far.

now you're, yet again, you're pushing the ball.

So when you try to drive that ball deep down the field,

所以當你想把球打到場外深處時，

you're underneath it, and you're lacking arm strength.

uses their other arm to twist their upper body

But a quarterback could complete all of these steps

但一個四分衛可以完成所有這些步驟。

and never end up with a spiraling football.

Getting that spiral comes down to the very last thing

得到螺旋式上升的結果是最後一件事。

before they release the ball, and it comes back to the grip.

在他們釋放球之前，它又回到了握柄。

Because, in order to generate a good spiral,

the last finger that should touch the ball

Larsen: The spiral's created by that final flick,

You really want that last finger to come off of it

你真的想把最後一根手指頭拔掉嗎？

and then finish down, and that's that spin

然後結束下來，這就是那個旋子。

that you're trying to get to create the spiral.

Even the slightest of errors in how the quarterback

lets go of the ball can affect the throw.

Larsen: If you're finishing with the ball on your wrist,

拉森：如果你是用手腕上的球來完成。

now your index finger's not the last finger.

現在你的食指不是最後一根手指。

and that's when you start to get balls that get wobbly.

而這時你開始得到的球，得到搖擺不定。

Chad Orzel: Really, precision in the release

and in the flight of the ball is absolutely critical

而在球的飛行中是絕對關鍵的。

to success if you're gonna be a passing quarterback.

如果你想成為一個傳球四分衛的話，你的成功。

My name is Chad Orzel, and I am a professor

我的名字叫Chad Orzel，我是一名教授。

at Union College in the department of physics and astronomy.

在聯合學院物理學和天文學系。

Narrator: When it comes to how well a football

flies through the air, there are two key elements:

在空中飛行，有兩個關鍵因素。

On average, a good spiral has a spin rate

平均來說，一個好的螺旋的旋轉速率為

That's as fast as an electric screwdriver.

Orzel: If you get the ball spinning rapidly,

the ball will tend to stay with its axis of spin,

pointing in the same direction all the time.

So if it's spinning fast and moving nose-on through the air,

所以，如果它在空中快速旋轉，並且鼻翼移動。

it's going to feel a smaller air-resistance force,

就會感覺到較小的空氣阻力力。

and that means it'll go a little bit farther

Narrator: The reason a rapidly spinning football

旁白：一個快速旋轉的足球的原因

stays on course better than a slower-spinning ball

比慢速旋轉的球更能保持航向。

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如何拋出完美的足球螺旋 (How To Throw The Perfect Football Spiral)

compromise

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