Name: 超神奇！煙火怎麼來的呢？ I Didn't Know That - Fireworks
Uploaded: 2014-12-29T09:54:45.000Z
Duration: 3 min 12 s
Description: 不管是跨年倒數，還是重大活動，各地的城市都喜歡以施放煙火來慶祝；而煙火的花樣和色彩，常讓觀眾看得驚嘆連連。究竟美麗的煙火，是如何製造出來的呢？ 重要片語: bad boy: （俗語）令人印象深刻的事物 make sure: 確保 be packed with: 裡面裝著 be made of: 由…製成 That’s...

We’re at one of the UK’s leading firework manufacturers

目前我們位於英國頂尖的煙火工廠

and this is their 125 mm air starburst shell.

這是他們製造的125釐米高空煙火彈

A 20-minute display will not drop 10,000 fireworks.

一場20分鐘的煙火秀會施放超過1萬發煙火

Each one costs around £ 30 and contains half a kilo of explosive.

每顆要價30歐元 裡面裝填了半公斤的火藥

And we have to launch it to a height to over 100 meters.

我們要把它發射到百尺以上的高空

As you can see, it’s much more than a bowl of loose powder.

如你所見 這可不只是一碗鬆散粉末

And this is how they test the component parts.

而這 就是他們測試重要零件的方法

The basic firework recipe is flash powder,

It’s a mixture of Potassium Perchlorate and Aluminium.

These ingredients are mixed together in 7 kilo batches

and a small sample is ignited to make sure it has a requisite brightness.

會點燃一些樣品 確保符合標準亮度

This sample has been mixed with Strontium to make it glow red and it’s clearly a pass.

原料摻入鍶後 會發出紅光 顯然這樣品合格

Well, this sample has Barium added to glow green.

If a firework is packed with this loose powder,

So the gun powder mixture is turned into pellet to prolong the burn time.

因此要將混合好的火藥做成球 延長燃燒時間

they create the spreading patterns we are all familiar with.

會形成我們都很熟悉的煙火花樣

This test checks whether this particular pellets size will burn of its efficient time

現在在測試這些火藥球的燃燒時間

There are two roughly formed rings of stars – central ring and an outer ring.

這是火藥球的排列雛形 有內圈及外圈

The outer ring is made of stars of a slightly larger size.

Therefore their behaviour and when they burst in the middle

ignites these stars and blows them in the circle formation.

會點燃這些火藥球 形成圓形圖樣

The initial will be the heavy larger stars will travel further.

That’s in the sky you’ll see one small ring and then a larger ring around it.

這也就是你在空中會看到的雙圈煙火

The next test checks the fireworks 2 fuses.

Firstly, a length of fuse is measured down to which it’ll slowly burn inside the firework

首先 引線要能在煙火內緩慢燃燒

to ensure it ignites at the correct altitude.

A fuse this length should burn any about 12 seconds.

As second external fuse is needed to lose the firework.

Racking the fuse in paper should contain the hot gases

We expect this link to fuse to burn within a hundred fifty second.

這條引線要在0.001秒內燃燒完畢

The final test is to ensure the firework is no louder than European regulation of 120 decibels.

最後要確保煙火音量低於歐規120分貝

The same noise level as enigmatic drill at close range.