Name: 子彈怎麼「飛」的？3 分鐘帶你快速了解原理！ (How do Bullets work?)
Uploaded: 2025-11-10T21:01:10.000Z
Duration: 2 min 41 s

This tiny object holds enough power to punch through steel.

這個微小的物體蘊含的力量足以穿透鋼鐵。

A little metal capsule that turns chemistry into raw speed.

一個小小的金屬膠囊，將化學能轉化為純粹的速度。

And inside, a design so clever, it changed weapons forever.

裡面有一個巧妙的設計，徹底改變了武器的歷史。

At the front, we have the bullet itself, also known as the projectile.

前端是子彈本身，也叫做彈頭。

It's typically a dense lead core, often wrapped in a copper jacket, shaped for one purpose and one purpose only.

它通常是密實的鉛心，外面包裹銅套，只為一個目的設計，且僅此一個目的。

The entire assembly is held together by the casing.

Made of brass or steel, this is the engine block.

彈殼由黃銅或鋼製成，是這個「引擎的核心」。

It holds everything together and expands when fired to seal the chamber, trapping the pressure inside.

它固定所有零件，發射時會膨脹以密封膛室，將壓力困住。

Not black powder like in old movies, but modern smokeless powder.

不是舊電影裡的黑火藥，而是現代無煙火藥。

Tiny grains that burn in microseconds, generating immense gas pressure.

微小的顆粒在微秒內燃燒，產生巨大的氣體壓力。

One strike and the whole chain reaction begins.

輕輕一擊，整個連鎖反應便開始。

The firing pin slams into the primer. Bang.

In microseconds, pressure skyrockets to thousands of PSI.

在微秒內，壓力飆升到數千 PSI。

With nowhere else to go, that force hammers the bullet forward.

沒有其他出路，這股力量將子彈猛然推向前方。

It races down the barrel and out at speeds of hundreds, sometimes over a thousand meters per second.

它沿槍管飛速前進，射出時速度達數百，有時超過每秒一千公尺。

And it all happens in just a couple of milliseconds.