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  • So, uh, Nigel would have got here.

  • We've got something.

  • Quay, fire syringe.

  • And what does it do?

  • Well, I'll show you what it does Seem Caught him rolling there.

  • Okay, I'm just gonna compress the air in it, and hopefully it will.

  • I don't know what's going on.

  • Wow, that's pretty cool.

  • You made a spark, and then was there any source of fire like a match or anything down there?

  • Well, as you can see, it's pretty transparent.

  • There was no match in there.

  • It was actually just the compression of the air on top of it, which was able to ignite the the cardinal that we had in there.

  • You're saying if we compress air, we can make it hard enough to ignite cotton?

  • Yeah.

  • Bye.

  • Because areas made up of particles.

  • So when you actually compressing it, you're forcing this particles to collide closer together, which is actually going to raise the temperature off in the inside of that tube them.

  • Okay, can you describe the apparatus for what'll there is is there's a glass chamber in there where the cardinal sits.

  • And as you can see, there's Theis pissing that moves up and down into that glass chamber.

  • And as it moves up and down, you can actually compress the air.

  • So it's like a little plunger like it likely to plunge yet.

  • Okay, so why don't we set one up?

  • Uh, wait, do it again.

  • Okay, I'll clean the remnants.

  • And what are the tricks here?

  • The trickiest Thio get not too much, but not too little animal.

  • And it's good to get it a raid it so that there's a lot of air, and that's what makes it much easier.

  • Thio.

  • Just like a good fire.

  • Is it just me, or do you feel like you're on a cooking job?

  • I feel like we're on the cooking.

  • So, yes, Who do you think would be Jamie Oliver in this situation Would be you or May Manley's her.

  • He's more like Nigella Lawson.

  • Let's face it, that's a good plan with I wish.

  • All right, we're ready for this.

  • Yes.

  • Was that obviously no matches?

  • No switches.

  • Know anything?

  • Okay, um, try it.

  • You want me to try and do you have the strength we're gonna find out?

  • Find out it's gonna be over.

  • Think.

  • Okay.

  • So what I'm gonna try to do is compress the air in there, and by compressing it, I'm going to increase its temperature because we're pushing all these air molecules together.

  • And if I get it hot enough to the ignition point of cotton, hopefully cardinal catch on fire.

  • I've heard that the auto ignition temperature of cotton is about 400 degrees Celsius so you can get quite a quite enormous amounts of temperature from a very quick compression.

  • Three, 21 surprised beginner's luck.

  • Check that up.

  • So I guess we could generalize and say, If you do the compression quite slowly, then well, there's time for the heat to escape out of the air.

  • And so we don't actually get ah, high high enough temperature to cause according to ignite.

  • Yeah, and there's actually a word for that.

  • It's called a DEA Batic Compression.

  • That's the one where there's enough heat generated quickly enough so that we can get that auto ignitions.

  • Yes, on 80.

  • About a compression would be one in which the heat doesn't escape from the gas.

  • Southern Have the time to absolutely.

  • All right, well, let's go see if we can auto ignite some other things.

  • Yeah, maybe.

  • Come here.

  • Okay.

So, uh, Nigel would have got here.

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B1 中級

消防注射器 (Fire Syringe)

  • 6 0
    林宜悉 發佈於 2021 年 01 月 14 日
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