0:00:02 > 0:00:04# We've got a television show of our own
0:00:04 > 0:00:07# Making stuff that's been designed by you lot at home
0:00:07 > 0:00:10# Building your inventions the best that we can
0:00:10 > 0:00:13# Mostly out of rubbish from the back of our van
0:00:13 > 0:00:17# We've even got at title that'll grab your attention
0:00:17 > 0:00:18# All together now... #
0:00:23 > 0:00:26Oi, plant boy, have I forgotten something?
0:00:26 > 0:00:29- I feel like I've forgotten something.- Shh!
0:00:29 > 0:00:32- I remembered to put my pants on. - Shh!
0:00:32 > 0:00:34Shush yourself!
0:00:34 > 0:00:37What in the name of Bill Oddie are you doing?
0:00:38 > 0:00:40OUCHO SPEAKS CACTINIAN
0:00:40 > 0:00:44- You're making a popcorn necklace? - Di.- Who are you making that for?
0:00:44 > 0:00:47OUCHO SPEAKS CACTINIAN
0:00:47 > 0:00:51When you say, "Er...no-one," do you mean, "Er...a girl"?
0:00:51 > 0:00:54- Noss!- Is it for a girl?- Noss!
0:00:54 > 0:00:58- Is it for a girly girl?!- Noss! - Is it for a girlie, girlie girlie!
0:01:00 > 0:01:03A... Eugh! Popcorn breath!
0:01:05 > 0:01:08How are you getting on with choosing inventions anyway?
0:01:08 > 0:01:11- OUCHO SPEAKS CACTINIAN - You're doing this one?- Di.
0:01:11 > 0:01:15Oh, but this is from someone called Harvey in Bishop's Stortford.
0:01:15 > 0:01:20It's called the Popper Chopper. It's a buggy with a popcorn maker.
0:01:20 > 0:01:22- Di.- A buggy that makes popcorn.
0:01:22 > 0:01:25- Di.- Right. So, why have you chosen this exactly?
0:01:25 > 0:01:28OUCHO SPEAKS CACTINIAN
0:01:28 > 0:01:32Purely for the reason that you're running out of popcorn
0:01:32 > 0:01:35- and you need to finish your necklace in a few days.- Di.
0:01:35 > 0:01:37Well, I'm not sure.
0:01:37 > 0:01:39Oh, eh, pee!
0:01:39 > 0:01:40- Maybe.- Pee!
0:01:40 > 0:01:43What have I told you about begging?
0:01:43 > 0:01:46Peeeeeee!
0:01:46 > 0:01:50- Yeah, all right then. All right! - Di! Woohoo!
0:01:50 > 0:01:53We've chosen inventions for worse reasons than that.
0:01:53 > 0:01:55Harvey in Bishop's Stortford it is, let's roll!
0:02:00 > 0:02:03- Well, so far, so good. - Di.- We're outside Harvey's house.
0:02:03 > 0:02:05He's got absolutely no idea we're here.
0:02:05 > 0:02:07Right, let's surprise him.
0:02:07 > 0:02:09HONK HONK!
0:02:09 > 0:02:12Look at that. What's this big noisy lorry doing in the middle
0:02:12 > 0:02:17- of the Hertfordshire countryside? Harvey's going to hear it.- Uh-oh!
0:02:17 > 0:02:18It's nothing to do with you, is it?
0:02:18 > 0:02:20OUCHO SPEAKS CACTINIAN
0:02:20 > 0:02:23- You've ordered some popcorn?- Di.
0:02:23 > 0:02:27How did you pay for it? You didn't use my credit card again, did you?
0:02:27 > 0:02:29I told you before, don't use my credit card!
0:02:29 > 0:02:32- OUCHO SPEAKS CACTINIAN - What's helpful about it?
0:02:32 > 0:02:33Hi, Ed. Hi, Oucho.
0:02:33 > 0:02:34Oh.
0:02:34 > 0:02:37Hello, Harvey. Great surprise.
0:02:37 > 0:02:40Sorry, did you get disturbed by the noise of this lorry?
0:02:40 > 0:02:42No, you were shouting.
0:02:42 > 0:02:44Ah.
0:02:51 > 0:02:53Surprise!
0:02:55 > 0:02:56Erm...
0:02:56 > 0:02:59- Is it all right if we come in? - Yes, OK.
0:03:02 > 0:03:06Ed, can you just tidy up outside because my mum...
0:03:06 > 0:03:08Quite understandable, don't worry.
0:03:08 > 0:03:12We'll get it tidied up very quickly. You won't believe the amount
0:03:12 > 0:03:16that Oucho can eat in a short time. It's quite disgusting, actually.
0:03:16 > 0:03:20Let's crack on with this invention. You know how this works, don't you?
0:03:20 > 0:03:22- Yes.- Good, because I haven't got a clue.
0:03:22 > 0:03:27But it's done us all right so far. So...
0:03:27 > 0:03:29Look into my eyes and tell me
0:03:29 > 0:03:32why you want to invent the Popper Chopper.
0:03:38 > 0:03:41I want to invent the Popper Chopper,
0:03:41 > 0:03:43a popcorn making buggy,
0:03:43 > 0:03:46because I absolutely love butterscotch popcorn.
0:03:46 > 0:03:50My brother Ed will be my co-driver.
0:03:50 > 0:03:55We'll make popcorn while we drive really fast around my farm.
0:03:55 > 0:03:57Afterwards, we'll stop and eat the popcorn,
0:03:57 > 0:04:01and have a drink from the Popper Chopper's drink dispenser.
0:04:02 > 0:04:08Ah, your brother Ed, eh? That's a good name - Ed.
0:04:08 > 0:04:09This will be a very easy invention
0:04:09 > 0:04:12because we've already got all the popcorn.
0:04:12 > 0:04:14No, I want to make my own popcorn.
0:04:14 > 0:04:17- Oh...- Wha?
0:04:17 > 0:04:19This stuff's no good. He wants to make it himself!
0:04:19 > 0:04:21It's not the right flavour as well.
0:04:21 > 0:04:24- I want butterscotch popcorn.- Oh!
0:04:24 > 0:04:26Oh, right. Great.
0:04:26 > 0:04:29That's two things you got wrong are ready and we haven't even started.
0:04:29 > 0:04:32- Well done. - OUCHO SPEAKS CACTINIAN
0:04:32 > 0:04:33Come on, let's go.
0:04:37 > 0:04:38Well, thanks for that, Oucho.
0:04:38 > 0:04:41Yet again you've embarrassed me in front of our viewers.
0:04:41 > 0:04:44All this trouble for a popcorn necklace.
0:04:44 > 0:04:47- Go on, tell me, who's it for?- Noss!
0:04:47 > 0:04:49- Come on.- Noss!- Who's the lucky girl?
0:04:49 > 0:04:52- Noss!- Or, unlucky girl!
0:04:52 > 0:04:55I can't shake the feeling I've forgotten something.
0:04:55 > 0:04:58I remembered to get up this morning and have cake for breakfast.
0:04:58 > 0:05:02I remembered to have a daydream about marrying Fiona Bruce...
0:05:02 > 0:05:04I haven't forgotten anything.
0:05:04 > 0:05:06- Anyway... Harvey's Popper Chopper. - Harvey!
0:05:06 > 0:05:09We don't even know how to make popcorn,
0:05:09 > 0:05:11let alone a buggy that drives round and makes it.
0:05:11 > 0:05:14Hey you two, relax.
0:05:14 > 0:05:16It's Benson, our goldfish.
0:05:16 > 0:05:20- I can help you with that. - What, you know about making popcorn?
0:05:20 > 0:05:24Yeah, man! I know all about making popcorn.
0:05:24 > 0:05:28You need a little thing called heat, and lots of it.
0:05:28 > 0:05:32Popcorn needs a temperature of over 250 degrees centigrade.
0:05:32 > 0:05:34250 degrees?
0:05:34 > 0:05:38Well, water boils at 100 degrees, so 250 degrees is really, really hot.
0:05:38 > 0:05:41Where are we going to get that kind of heat?
0:05:41 > 0:05:43Well, you could use the heat from an engine.
0:05:43 > 0:05:45Engines burn petrol and would produce heat
0:05:45 > 0:05:49far hotter than 250 degrees, you know.
0:05:49 > 0:05:51Great, great. Let me just check
0:05:51 > 0:05:54I'm getting down all this popcorn information properly.
0:05:54 > 0:05:56- Popcorn?- Yeah, popcorn.
0:05:56 > 0:06:00- You were telling us about popcorn?- Was I?
0:06:00 > 0:06:05No, man! Fish don't eat popcorn, it would get all soggy.
0:06:05 > 0:06:07By the way, who are you?
0:06:07 > 0:06:10- OUCHO SPEAKS CACTINIAN - You're right, this is useless.
0:06:10 > 0:06:13I'm not wasting time talking to a forgetful fish.
0:06:13 > 0:06:17- Well, at least we know we need an engine to make popcorn.- Di.
0:06:17 > 0:06:19Let's have a look round Harvey's farm.
0:06:36 > 0:06:37- Shall I get Harvey?- OK.
0:06:37 > 0:06:39Harvey!
0:06:41 > 0:06:44- Hi, Ed. Hi, Oucho.- All right, mate?
0:06:44 > 0:06:47- Now, you wanted a Popper Chopper, didn't you?- Yes.
0:06:47 > 0:06:49Well, I think it's time you saw it.
0:06:49 > 0:06:51Ta-dah!
0:06:51 > 0:06:54- Looks more like a lawn mower. - Well, no, to be fair,
0:06:54 > 0:06:57it is a lawn mower, but there's a reason for that.
0:06:57 > 0:07:00It's cos we need an engine to create loads of heat, right?
0:07:00 > 0:07:02It looks nothing like in the pictures.
0:07:02 > 0:07:03Well, pictures schmictures.
0:07:03 > 0:07:06This is better. This is all necessary.
0:07:06 > 0:07:09The heat rises up here, makes your lovely popcorn there, you see?
0:07:09 > 0:07:11That's all waiting to pop.
0:07:19 > 0:07:22Now, I've put a thermometer down there
0:07:22 > 0:07:24to measure the heat of the engine and another one up here,
0:07:24 > 0:07:27to measure the heat of the popcorn maker.
0:07:27 > 0:07:29- Would you like to see it in action? - Yep.- OK.
0:07:29 > 0:07:32Let's get this baby cranked up!
0:07:35 > 0:07:36OK, that's good.
0:07:36 > 0:07:40This is so you can ride around. You wanted that, didn't you?
0:07:40 > 0:07:43You can ride around on here and this is your drinks dispenser, you see?
0:07:43 > 0:07:45You can have a lovely refreshing drink.
0:07:45 > 0:07:49Your mates will be so jealous when they see you driving around on this!
0:07:52 > 0:07:55I reckon that popcorn will be done by now. Take it out.
0:07:56 > 0:08:01- It's not popped.- What? - It's not popped!- What's that?
0:08:01 > 0:08:05- It's all popped and it's brilliant and you're having a great time?- No!
0:08:05 > 0:08:08- What?- No!- Hang on, what?
0:08:08 > 0:08:11- It's not popped.- Oh...- Oh...
0:08:11 > 0:08:14Oh, no, it hasn't. What's the heat of the engine?
0:08:14 > 0:08:17Very hot.
0:08:17 > 0:08:21- It's very hot?- Yes.- What's the heat of the popcorn maker.- Not hot at all.
0:08:21 > 0:08:24What's happening here? Cos we know the engine is hot enough,
0:08:24 > 0:08:26but the popcorn seeds aren't popping.
0:08:26 > 0:08:30- The heat isn't getting there. - Oh, oh yeah.
0:08:30 > 0:08:32I was going to say that.
0:08:32 > 0:08:34OUCHO SPEAKS CACTINIAN
0:08:34 > 0:08:37- I know, but how do we get the heat up there?
0:08:37 > 0:08:40- I thought you knew what you're doing.- Well...
0:08:40 > 0:08:45These things take time, yeah? We'll work this out. It'll be fine.
0:08:49 > 0:08:51Harvey?
0:08:52 > 0:08:55- Hi, Ed. Hi, Oucho.- All right?
0:08:55 > 0:08:58What's Oucho doing?
0:08:58 > 0:09:00OUCHO SPEAKS CACTINIAN
0:09:00 > 0:09:02He's on a deadline. Hang on.
0:09:02 > 0:09:05- There's a deadline for a popcorn necklace?- Mm-hmm!
0:09:05 > 0:09:08Why is he making a popcorn necklace?
0:09:08 > 0:09:10No idea. Will you please tell me?
0:09:10 > 0:09:12- Noss.- Please?- Noss. - Please?- Please?- Please?
0:09:12 > 0:09:15- Noss! Noss!- Please?
0:09:15 > 0:09:16Noss!
0:09:18 > 0:09:21We're going to find out eventually. Harvey, I've got some good news
0:09:21 > 0:09:24and some bad news about your Popper Chopper.
0:09:24 > 0:09:27The good news is that we've got
0:09:27 > 0:09:31a drinks dispenser and some butterscotch sauce!
0:09:31 > 0:09:33What's the bad news?
0:09:33 > 0:09:36Oh, I can't remember what I've forgotten.
0:09:36 > 0:09:38And we can find a way to get heat from the engine
0:09:38 > 0:09:40to make the popcorn and stuff.
0:09:40 > 0:09:41Why don't you to ask someone?
0:09:41 > 0:09:44I've tried but no one knows what I've forgotten.
0:09:44 > 0:09:48No, about the popcorn? Why don't you phone Monsieur Pamplemousse?
0:09:48 > 0:09:51He's sure to know about popcorn. He's a chef.
0:09:51 > 0:09:53Yeah, but he's always really horrible to me.
0:09:53 > 0:09:56Please, Ed! We're desperate. Please!
0:09:56 > 0:10:00All right. He lives in France, so you can pay the phone bill.
0:10:06 > 0:10:08Egg, croissant...
0:10:08 > 0:10:10Eh!
0:10:10 > 0:10:15HONKING Monsieur?
0:10:15 > 0:10:18Hello! Hello, Monsieur Pamplemousse.
0:10:18 > 0:10:21I just need to get some information off you quickly...
0:10:21 > 0:10:24Is that the Environmental 'Ealth Department?
0:10:24 > 0:10:26I told you before, that rat was on ze menu!
0:10:26 > 0:10:30No, no. I'm not the Environmental Health Department.
0:10:30 > 0:10:35I'm Ed Petrie. I need to find out about making popcorn.
0:10:35 > 0:10:41Ah, le popcorn! This is a delicacy in your country, is it not?
0:10:41 > 0:10:45You use it to lure ze love of your life...oui? Oui?
0:10:45 > 0:10:50Well, when you're were making popcorn, it must be very 'ot.
0:10:50 > 0:10:52Yes, we know about that. A goldfish told us.
0:10:52 > 0:10:55Zut alors! A goldfish?
0:10:55 > 0:10:58Look...the thing is, we're using an engine as our heat source,
0:10:58 > 0:11:01but we need to find a way of getting the heat from the engine
0:11:01 > 0:11:04- to the popcorn seeds.- Ha, ha!
0:11:04 > 0:11:07Oh! For a moment there, I thought you said
0:11:07 > 0:11:10you are using an engine to make ze popcorn!
0:11:10 > 0:11:14- Ha, ha, ha!- Ha...Yes. Yes...
0:11:14 > 0:11:16About moving heat from one place to another...
0:11:16 > 0:11:21For that, you need to find a good conductor.
0:11:21 > 0:11:24'Eat is a form of energy, you idiot!
0:11:24 > 0:11:27Everything is made up of molecules.
0:11:27 > 0:11:30Something 'ot has molecules that jiggle very fast
0:11:30 > 0:11:34and something cold has molecules that jiggle slower.
0:11:35 > 0:11:39'Eat can be transferred from object to object.
0:11:39 > 0:11:45Ze 'ot, fast, jiggling molecules bang into ze cold, slow molecules
0:11:45 > 0:11:47and make them jiggle faster.
0:11:47 > 0:11:52Surely you know this basic level of science, you crude primate!
0:11:52 > 0:11:55Er...Kind of, yeah... Carry on though.
0:11:55 > 0:11:58Once the slow molecules start jiggling faster,
0:11:58 > 0:12:03they hit the other slow molecules next to them, making them jiggle
0:12:03 > 0:12:07and so the 'eat begins to move along, molecule by molecule.
0:12:07 > 0:12:11This is how 'eat is transferred from one place to another,
0:12:11 > 0:12:15you culture-starved idiot from across the Channel!
0:12:15 > 0:12:19So, we need to find something with molecules that will jiggle
0:12:19 > 0:12:22to transfer the heat from the engine to the popcorn seeds?
0:12:22 > 0:12:26Oui. Oui. You should use metal. It's very good at conducting ze 'eat.
0:12:26 > 0:12:29Now, I don't have any more time to waste with you.
0:12:29 > 0:12:32I have the dodo casserole to make for ze President.
0:12:32 > 0:12:35So goodbye, scumbag English person!
0:12:36 > 0:12:37Oh!
0:12:41 > 0:12:44- Ah, ha-ha ha-ha!- Ah, have I got some good news for you!
0:12:44 > 0:12:46You've remembered what it is you've forgotten?
0:12:46 > 0:12:47Oh, no. No, not that.
0:12:47 > 0:12:50Monsieur Pamplemousse told me how heat is transferred.
0:12:50 > 0:12:54Hot molecules jiggle cold molecules and make them hot as well.
0:12:54 > 0:12:57He said we need to use metal to transfer the heat...
0:12:57 > 0:12:58BELL RINGS What?
0:12:58 > 0:13:01Ah, this is my alarm that I set
0:13:01 > 0:13:04- when I've got something important to remember.- Eh?
0:13:04 > 0:13:08- OUCHO SPEAKS CACTINIAN - No, I still can't remember it.
0:13:08 > 0:13:11All I know is it was super, super important.
0:13:11 > 0:13:14- Are you sure you don't know, mate? - Noss...
0:13:30 > 0:13:34- How do you like the look of this Popper Chopper now?- It looks great.
0:13:34 > 0:13:36Yes, I think we're almost there.
0:13:36 > 0:13:39We've got the engine here, creating loads of heat,
0:13:39 > 0:13:42we've got a popcorn maker and between the two, we've got a pipe
0:13:42 > 0:13:45to transfer heat to make your lovely popcorn.
0:13:45 > 0:13:48If you like thermometers, you've come to the right place.
0:13:48 > 0:13:51There's a thermometer on the engine to measure the heat of that,
0:13:51 > 0:13:52a thermometer on the pipe,
0:13:52 > 0:13:56a thermometer here to measure the heat of the popcorn maker.
0:13:56 > 0:13:59- So, how do you fancy some butterscotch popcorn?- Sounds good!
0:13:59 > 0:14:01OK, let's start driving. Go, go, go!
0:14:12 > 0:14:13Oh, great.
0:14:13 > 0:14:15OUCHO SPEAKS CACTINIAN
0:14:15 > 0:14:18Let's find out if it worked. Bagsy me first on the popcorn,
0:14:18 > 0:14:20because I'm the oldest and the tallest.
0:14:24 > 0:14:26Oh, no. Look at that!
0:14:26 > 0:14:28Oh! That's not popcorn!
0:14:28 > 0:14:30Yes, you're telling me!
0:14:30 > 0:14:33OUCHO SPEAKS CACTINIAN
0:14:33 > 0:14:37- Will you stop going on about your popcorn necklace?- Noss!
0:14:37 > 0:14:39Hang on. Let's have a look at this...
0:14:39 > 0:14:44Right, the engine's really hot... Oh, the pipe's a bit cooler.
0:14:46 > 0:14:48- The popcorn maker's not very hot at all!- Oh!
0:14:48 > 0:14:52Right, so, the heat is getting to the pipe, but not transferring
0:14:52 > 0:14:55to the popcorn maker. You know what this means?
0:14:55 > 0:14:57- OUCHO SPEAKS CACTINIAN - Back to the van!
0:14:57 > 0:14:59- Back to the van!- Back to the van!
0:14:59 > 0:15:02OK, this is serious. Now, we've transferred the heat,
0:15:02 > 0:15:04just like Monsieur Pamplemousse said.
0:15:04 > 0:15:08- But it still wasn't hot enough to pop the popcorn.- I know, but why?
0:15:08 > 0:15:11We know the engine is hot enough, so where's the heat going?
0:15:11 > 0:15:14Where's it disappearing too? It doesn't make sense.
0:15:14 > 0:15:16Hey, what's that, Ed?
0:15:16 > 0:15:18Oh, this? This is a knot I tied on my finger to make sure
0:15:18 > 0:15:22I didn't forget something but I've forgotten what it's for.
0:15:22 > 0:15:24I'm getting fed up with this.
0:15:24 > 0:15:28Maybe it was to remind me to return this survival kit and compass,
0:15:28 > 0:15:32- that I borrowed off Scott Stuck. - OUCHO SPEAKS CACTINIAN
0:15:32 > 0:15:33Oh, no, no, no, that's not it.
0:15:33 > 0:15:36I just couldn't be bothered to go to the Post Office.
0:15:36 > 0:15:38- OUCHO SPEAKS CACTINIAN - You're right!
0:15:38 > 0:15:40- He'll know all about heat and things.- Di.
0:15:40 > 0:15:44Cos he's out in the jungle I'll give him a ring, his number's on here.
0:15:52 > 0:15:56BUZZING PHONE RINGS
0:15:56 > 0:16:01Hello? Hello, are the search and rescue parties on their way?
0:16:01 > 0:16:02Er, no. It's me, Ed Petrie.
0:16:02 > 0:16:06Do you need me to contact the search and rescue parties for you?
0:16:06 > 0:16:08No. No, no.
0:16:08 > 0:16:11Everything here is fine.
0:16:11 > 0:16:12I'm surviving in the jungle.
0:16:12 > 0:16:16Oh, good. Because where are the search parties kept, eh?
0:16:16 > 0:16:19I'd literally have to search for the search party!
0:16:19 > 0:16:21Ha ha...hmmm.
0:16:21 > 0:16:24- Can I help you with the something? - Yeah, sorry.
0:16:24 > 0:16:28- I wanted to ask some questions about heat, and how we move it.- Ah! Heat.
0:16:28 > 0:16:31Well, I know all about heat.
0:16:31 > 0:16:33It's always hot here.
0:16:33 > 0:16:36Always. Relentlessly.
0:16:36 > 0:16:39We're making a Popper Chopper. It's a buggy that makes popcorn.
0:16:39 > 0:16:42We know there's enough heat in the engine to make the popcorn.
0:16:42 > 0:16:44We've got a pipe to transfer the heat,
0:16:44 > 0:16:47but not enough heat is transferring from the pipe
0:16:47 > 0:16:51- to the popcorn making bit, and we don't know why.- Ah, well,
0:16:51 > 0:16:56your heat is escaping which means you need insulation.
0:16:56 > 0:16:58Insulation, right, right, right.
0:16:58 > 0:17:02Some of the heat from the pipes is escaping into the air.
0:17:02 > 0:17:06This loss of heat means that not enough heat is being transferred
0:17:06 > 0:17:08to the popcorn making bit.
0:17:08 > 0:17:11OK, OK. So, what do I do?
0:17:11 > 0:17:14You need to insulate the metal pipes.
0:17:14 > 0:17:19Metal is a good conductor of heat, because its molecules jiggle easily.
0:17:19 > 0:17:21You need to surround the metal pipes
0:17:21 > 0:17:25with a material made of molecules that will not jiggle very easily.
0:17:25 > 0:17:30So, the heat will transfer along the pipe instead of into the air.
0:17:30 > 0:17:32Oh, that's great, Scott.
0:17:32 > 0:17:35Are you sure there isn't anything I can help you with?
0:17:35 > 0:17:37Well, I am a bit thirsty.
0:17:37 > 0:17:40I know there's a watering hole north of here, but some idiot
0:17:40 > 0:17:44has taken my compass, and I've no hope of finding my way there.
0:17:44 > 0:17:46Oh, oh dear.
0:17:46 > 0:17:48Erm, well, I'm sure it'll turn up.
0:17:48 > 0:17:51Thank you, bye.
0:17:57 > 0:18:02So, my friends. What we need is some insulation.
0:18:02 > 0:18:05- Wha?- Insulation.
0:18:05 > 0:18:10Basically, what we do, is we cover the pipe between the engine
0:18:10 > 0:18:13and the popcorn maker, and that keeps in all the lovely heat,
0:18:13 > 0:18:15and you can get it to the popcorn seeds.
0:18:15 > 0:18:16What will we use, though?
0:18:16 > 0:18:19We need to find a material that doesn't conduct heat well.
0:18:19 > 0:18:21ED AND OUCHO: What we need...
0:18:21 > 0:18:24Hang on, I was looking forward to this bit. I'll do this bit.
0:18:24 > 0:18:28- BOTH: What we need...- No, seriously, mate, people don't understand you,
0:18:28 > 0:18:30you don't speak English. It's better if I do this.
0:18:30 > 0:18:34- BOTH: What we need...- Seriously, I was really looking forward to this.
0:18:34 > 0:18:37What we need is an insulation testing machine
0:18:37 > 0:18:39and I know just where to get one.
0:18:46 > 0:18:49- OUCHO SPEAKS CACTINIAN - Yes, it's great, isn't it?
0:18:49 > 0:18:51It's my granny's tea tasting machine.
0:18:51 > 0:18:54Granny is very fussy about her tea. She likes it nice and hot.
0:18:54 > 0:18:58This tea tasting machine will spit it out if it's too cold.
0:18:58 > 0:19:01Now, over here, we've got three teapots, that are all the same size.
0:19:01 > 0:19:04They're wrapped in different materials.
0:19:04 > 0:19:07- It's the materials we're testing. So, what have we got here?- Tights.
0:19:07 > 0:19:09Yes, that's tights.
0:19:09 > 0:19:12- Newspaper.- Newspaper, obviously. And that?- Fluffy stuff.
0:19:12 > 0:19:16That's the technical name for it, the scientific name. Fluffy stuff.
0:19:16 > 0:19:17I found it in a loft over there.
0:19:17 > 0:19:20So, I need to find out what the best insulator is, yeah?
0:19:20 > 0:19:24What keeps the heat in. So, the teapot with the hottest tea in it
0:19:24 > 0:19:30after half-an-hour has the best insulating material around it.
0:19:30 > 0:19:32- Got it?- Yep. Erm, Ed?
0:19:32 > 0:19:35Is the tea going to be hot?
0:19:35 > 0:19:38- No, as I said, Harvey spits out cold tea, doesn't he?- Di.
0:19:38 > 0:19:41You're perfectly fine, although that's a good point.
0:19:44 > 0:19:47My gran is nuts about health and safety. Oh, she loves it.
0:19:47 > 0:19:50She did a degree in it. She goes on about it all the time.
0:19:50 > 0:19:52She's a real bore at Christmas.
0:19:52 > 0:19:54When she built this, she knew what she was doing
0:19:54 > 0:19:56but you at home might not do...
0:19:58 > 0:20:00- OK, shall we start testing, then? - Yep.
0:20:00 > 0:20:04The first thing to do, is do nothing. Cos I've filled those up
0:20:04 > 0:20:07with boiling water, so you need to wait for half-an-hour.
0:20:10 > 0:20:13Wake up, Ed.
0:20:13 > 0:20:17- OK. That's 30 minutes. Shall we test this tea?- Yeah.
0:20:17 > 0:20:20Right, let's start with the tights.
0:20:22 > 0:20:24- Let's see how well this insulated the teapot.- Di.
0:20:28 > 0:20:30OK, that's all topped up.
0:20:33 > 0:20:35What did it make of that?
0:20:35 > 0:20:37- BELL RINGS - Ah!
0:20:38 > 0:20:42- What?- Oh, dear. It doesn't like it. Too cold.
0:20:44 > 0:20:46- The tights are no good. - OUCHO SPEAKS CACTINIAN
0:20:46 > 0:20:49What about newspaper? I think this will work brilliantly.
0:20:49 > 0:20:51It's going to work really well, this.
0:20:51 > 0:20:55This tea tasting machine is going to love this. I guarantee it.
0:20:58 > 0:21:02BELL RINGS Oh, doh.
0:21:02 > 0:21:05Ah!
0:21:06 > 0:21:10This, as insulation, is rubbish. Literally.
0:21:10 > 0:21:13Right, so it's just the fluffy stuff.
0:21:13 > 0:21:15- The fluffy stuff.- Yeah.- Di.
0:21:15 > 0:21:18It looks a bit like my granny's tea cosy, actually.
0:21:32 > 0:21:34No, it works!
0:21:34 > 0:21:37That means that this tea is lovely and hot.
0:21:37 > 0:21:41- So, what shall we use to insulate our pipes?- The green fluffy stuff.
0:21:41 > 0:21:44The green fluffy stuff! Well, it can be any colour.
0:21:44 > 0:21:47It can be pink for all I care, as long as it's fluffy insulation.
0:21:47 > 0:21:51We'll use it on our pipe to keep it nice and hot, to make our popcorn.
0:21:57 > 0:22:00# Harvey's Popper Chopper was this week's invention
0:22:00 > 0:22:04# A popcorn necklace though was Oucho's intention
0:22:04 > 0:22:07# Popcorn needs heating to 250 degrees
0:22:07 > 0:22:11# Benson said an engine could do that with ease
0:22:11 > 0:22:14# Found an old engine on the farm which was neat
0:22:14 > 0:22:17# Stuck on a thermometer to show the right heat
0:22:17 > 0:22:21# Engine got hot but the heat wasn't transferring
0:22:21 > 0:22:24# As far as popcorn went it wasn't occurring
0:22:24 > 0:22:27# How to move the heat was hard to deduce
0:22:27 > 0:22:30# "You need a good conductor" said Pamplemousse
0:22:30 > 0:22:34- # Conduction - Yeah, yeah, yeah- Di-di-di
0:22:34 > 0:22:38# I hate the way Pamplemousse treats us like fools
0:22:38 > 0:22:40- # Conduction - Yeah, yeah, yeah- Di-di-di
0:22:40 > 0:22:44# He told us that heat is transferred by molecules
0:22:44 > 0:22:45# Molecules
0:22:45 > 0:22:50# Molecules Hooo!
0:22:56 > 0:23:00# We used metal pipes Had a second go
0:23:00 > 0:23:03# They certainly got hot but the popcorn less so
0:23:03 > 0:23:06# Went to Scott Stuck for an explanation
0:23:06 > 0:23:10# He said "Stop the heat escaping use insulation"
0:23:10 > 0:23:13# Granny's tea-testing machine tried different types
0:23:13 > 0:23:16# Turns out stuff from the loft would insulate our pipes
0:23:16 > 0:23:20- # Insulator - Yeah, yeah, yeah- Di-di-di
0:23:20 > 0:23:23# A material whose molecules don't jiggle about
0:23:23 > 0:23:27- # Insulator - Yeah, yeah, yeah- Di-di-di
0:23:27 > 0:23:29# Will our Popper Chopper work?
0:23:29 > 0:23:31# Well we're in with a shout. #
0:23:34 > 0:23:35Well, that was hard work.
0:23:35 > 0:23:37We were up all night.
0:23:37 > 0:23:39OUCHO SPEAKS CACTINIAN
0:23:39 > 0:23:42Oucho, Harvey doesn't need to know that I drank all the tea,
0:23:42 > 0:23:46and the real reason I was up all night was cos I was weeing.
0:23:46 > 0:23:49- Urgh!- Di. - Don't blame me, blame him.
0:23:49 > 0:23:50You translated it!
0:23:50 > 0:23:53- Di!- Yeah, all right, you've got a point. Shall we just get on
0:23:53 > 0:23:56- with this? Anyway, it's been a lot of hard work.- Di.
0:23:56 > 0:23:59There are times when I wasn't sure we could pull it off.
0:23:59 > 0:24:01- But, I'm pleased to announce...- Di.
0:24:01 > 0:24:04..that Oucho has made his popcorn necklace
0:24:04 > 0:24:06- and sent it to his secret love. - Oh, di.
0:24:06 > 0:24:09- So, it's been nice working with you, see you around. Bye.- What?
0:24:09 > 0:24:12Only joking. No, shall we do this?
0:24:12 > 0:24:16- Yeah.- OK. Harvey asked us build him his Popper Chopper,
0:24:16 > 0:24:19a buggy that makes butterscotch popcorn.
0:24:19 > 0:24:21- And, here it is!- Ta-daaa!
0:24:23 > 0:24:26Only joking. That's two jokes. I'm on fire today.
0:24:26 > 0:24:28- Di, di.- Here it is!
0:24:28 > 0:24:30Wow.
0:24:38 > 0:24:41All we need now is your little brother, Ed. Nice name.
0:24:41 > 0:24:43ALL: Ed!
0:24:45 > 0:24:46Hi, Ed. Hi, Oucho.
0:24:46 > 0:24:47Hello, Ed. Nice name.
0:24:47 > 0:24:50Harvey, Ed, nice name, let's go!
0:25:01 > 0:25:05- A brilliant invention, isn't it? - Yes, it's an awesome invention.
0:25:05 > 0:25:07It goes very fast.
0:25:07 > 0:25:12- Nice cornering, Harvey.- Di. - I can't wait till it pops, can you?
0:25:14 > 0:25:19- Oh, wow.- Woo, this is fun!
0:25:19 > 0:25:22- Hope it's hot enough for the popcorn.- Ah, di.
0:25:24 > 0:25:26I can smell it!
0:25:36 > 0:25:38- Nice driving, Harvey.- Di.
0:25:38 > 0:25:42Now, of course, the big question is, is there any popcorn?
0:25:42 > 0:25:45Of course there is. Oh, yeah. We know what we're doing.
0:25:47 > 0:25:50- Look at that. Who wants some of this, then?- Me!- Me!
0:25:50 > 0:25:51OUCHO SPEAKS CACTINIAN
0:25:51 > 0:25:54- Well, Harvey, it's your invention, you can go first.- Thank you.
0:25:54 > 0:25:57Is that enough? You said you like butterscotch.
0:25:57 > 0:25:59- Orange squash, anyone?- Me!
0:25:59 > 0:26:03- OUCHO SPEAKS CACTINIAN - It's losserly.- Oh, di, di.
0:26:03 > 0:26:04As Oucho would say it!
0:26:04 > 0:26:08There you go. Harvey, you've driven really fast around your dad's farm,
0:26:08 > 0:26:11- you've got your drink, and your butterscotch popcorn.- Di.
0:26:11 > 0:26:14- How d'you think it went? - It went brilliant, Ed.- Yeah?
0:26:14 > 0:26:17- Did you remember what you'd forgotten?- Oh, no.
0:26:17 > 0:26:19No, I never did find out what I'd forgotten.
0:26:19 > 0:26:22PHONE RINGS OUCHO SPEAKS CACTINIAN
0:26:22 > 0:26:25That'll probably be the Big Big Cheese. I'll tell it went well.
0:26:25 > 0:26:27Hello, boss...
0:26:27 > 0:26:29Oh, hello Mum.
0:26:29 > 0:26:32Mum, I'm on the telly at the moment, this isn't really...
0:26:32 > 0:26:36Thank me? For what?
0:26:36 > 0:26:39Your birthday present?
0:26:39 > 0:26:41Yeah, I do normally forget, don't I?
0:26:41 > 0:26:43Yeah, yeah. Well, the thing is...
0:26:43 > 0:26:48It's the best one I've ever given you? Right, well...
0:26:48 > 0:26:52glad you like it. The thing is, Mum, this might sound really weird,
0:26:52 > 0:26:54but I've been working really hard in the last few days.
0:26:54 > 0:27:00I've completely forgotten what it was I gave you. What was it again?
0:27:00 > 0:27:03Popcorn necklace?
0:27:03 > 0:27:05Oh, right.
0:27:05 > 0:27:08Yeah. Yeah, glad you like it.
0:27:08 > 0:27:10The thing is, I am on the telly.
0:27:10 > 0:27:11Love you. I mean, bye.
0:27:11 > 0:27:14I mean, I do love you. Love you.
0:27:18 > 0:27:21That was really nice of you to remember my mum's birthday, Oucho.
0:27:21 > 0:27:24- Ah, di. - And a hand-made present, as well.
0:27:24 > 0:27:27- Di di di!- That's a lot of effort.
0:27:27 > 0:27:29It's almost as if...
0:27:29 > 0:27:31No, no. No, no, no, no, no, no.
0:27:31 > 0:27:35No, no, no, no. Don't be silly.
0:27:35 > 0:27:38Oucho? Do you fancy my mum?
0:27:38 > 0:27:40Errrrr...
0:27:40 > 0:27:42Aaah! Ah, no!
0:27:42 > 0:27:45Ahhhh!
0:27:45 > 0:27:47That's wrong! I feel sick!
0:27:47 > 0:27:49Subtitles by Red Bee Media Ltd