00:05If you've got a question and you don't know where to go,
00:08Ask Nina for some help, cause she's got a science show.
00:11She makes sense of her senses, while helping all her fans,
00:14By doing her experiments, with potions and with bags.
00:17Touch her tongue, fingers, eyes, ears, nose.
00:23Nina and the neurons find out what you need to know.
00:26Nina and the neurons find out what you need to know.
00:30He helps us with our eyes, and Felix with our touch.
00:33Ollie sniffs our snows and sends some bells she hears so much.
00:36But it's Ollie's brother, he helps us with our taste.
00:38Then he knows the neurons and they're coming to your place.
00:41Touch her tongue, fingers, eyes, ears, nose.
00:47Nina and the neurons find out what you need to know.
00:50Nina and the neurons find out what you need to know.
00:53Oh yeah!
00:56Oh hello, I'm just writing myself a little note.
01:00Look, what do you mean you can't see it?
01:03Okay, I've lost my normal pen, so I'm writing in invisible ink.
01:09It's to remind me to buy a new pen.
01:16Oh, I hear a beep, I see a flash.
01:19I wonder what they're going to ask.
01:24Hi Nina!
01:26Hello there!
01:27We've got a question for you, Nina.
01:30How do the stars in our ceilings glow in the dark?
01:33That's a great question.
01:35How do the stars in our ceilings glow in the dark?
01:38Could you bring some of your glow stars down to my lab?
01:41And we'll do some experiments to investigate.
01:43See you soon, Nina.
01:45Bye!
01:47Well, I'm going to need some help to answer this one, and I know just who to ask.
01:51Okay, neurons, time to get to work.
02:06Neurons are the ready, Nina.
02:08Okay, today's question is how do the stars in our ceilings glow in the dark?
02:13Now, which neuron do you think will be most useful in helping us find the answer?
02:17Me, me, me!
02:18Will it be Fabulous Felix?
02:21I can help so very much, if you need the sense of touch.
02:24Will it be Beautiful Bell?
02:27I send messages to brain from ear.
02:29If there's a sound, I'll help you hear.
02:31Will it be Lovely Look?
02:33For looking and seeing, day or night, I'll help you with your sense of sight.
02:38Will it be Awesome Ollie?
02:39If it's Pony or Whiffy, but you can't tell, my messages help your sense of smell.
02:44Or will it be Baby Butt?
02:46Salty, salty, bitter, or sweet.
02:49I'm your taste buddy whenever you eat.
02:55It's Looch!
02:56Yes!
02:58Go, Nina!
02:59Go, Nina!
03:00Go, Nina!
03:01Go, Nina!
03:03Go, Nina!
03:04Go, Nina!
03:04Go, Nina!
03:05Cool, Nina!
03:06I'll be looking out to help you!
03:08Today's question is, how do the stars on our ceilings glow in the dark?
03:13Now, because we see glow stars glow, look, our seeing neuron will be helping us today.
03:18Right, I'd better get the lab ready before the experimenters arrive.
03:24Razzie likes chess.
03:25Jack loves making puppets.
03:27Mia's learning Mandarin.
03:29But they all want to know more about glow stars.
03:32So today, for one day only, Razzie, Jack, and Mia become the experimenters!
03:39Hi, Nina!
03:40Hi, Nina!
03:41Welcome to my science lab.
03:42Come in!
03:43So, your question was, how do the stars on our ceilings glow in the dark?
03:48So, why do you want to know that?
03:50Because I've got a glow mirror in my bedroom and I want to know how it glows.
03:54Did you bring some of the glow stars with you?
03:56Yeah!
03:57Oh, brilliant!
03:59Well, for our first experiment, we're going to be using these glow stars and our senses.
04:05Woo-hoo!
04:06A senses experiment!
04:08We're ready, Nina!
04:09Now, the first thing we're going to do is dim the lights to make it darker so we can see
04:13what the glow stars do.
04:17Oh, look!
04:18Oh, they're shining really brightly, aren't they?
04:20Yeah!
04:21And, as you can see, I've got some of my own glow stars around the lab.
04:25I've got some over there, too.
04:27They look like they're shining in the dark.
04:30Yeah!
04:31Now, when something glows brightly, it's giving off light, isn't it?
04:35Yeah!
04:36Yeah!
04:36Now, let me just put the lights back up.
04:39OK, so let's look at some other things that give off light, like my lamp.
04:44I'll just turn it on.
04:46Oh!
04:47Oh, it's not working.
04:48You haven't plugged it in!
04:50Have I not?
04:51Oh, let's have a look.
04:52Oh, you're right, I haven't plugged it in.
04:55And this light needs electricity to work.
04:58Now, I'll do this because plugs and sockets can be dangerous.
05:06Hooray!
05:06Now that we've plugged the lamp in, the light is glowing brightly.
05:11Oh, and here's a torch.
05:13The torch doesn't have a plug, but it still lights up.
05:17Look.
05:19Hey!
05:20And that's because of these.
05:24Now, do you know what these are?
05:26Batteries.
05:26That's right, batteries.
05:27But these aren't for playing with either.
05:29So, to give a glowing light, we had to plug in the lamp and we had to use batteries for
05:35the torch.
05:36But the glow stars, they weren't plugged in and I don't think they had batteries in them.
05:41So, how did they glow?
05:43I think we need to do another experiment.
05:45So, let's go this way.
05:49Now, let's keep our eyes safe and put on our safety goggles.
05:55And as I'll be using some chemicals, I'm going to be wearing my safety gloves too.
06:01Mixing chemicals can only be done in Nina's lab.
06:04You should never try mixing things yourself.
06:07Okay, in these beakers are some very special chemicals.
06:11Now, they don't look very special right now, but I'm going to mix them up.
06:17And now, I'm going to dim the lights.
06:23And watch this.
06:31Now, I'll do the next one.
06:39And now, the last one.
06:41I hope it's going to be red.
06:42Well, let's see.
06:45Oh, what colour is it?
06:47It's green.
06:48Yeah.
06:49Oh, fantastic.
06:51Sometimes, when we mix different chemicals together, they give off a glowing light.
06:56And this is called luminescence.
06:58Lumin.
07:00Lumin.
07:01That's a difficult word to say, Nina.
07:04But luminescence is really useful because it means we can make light without plugging things
07:10in or using batteries.
07:12Hmm.
07:12But we didn't mix different chemicals together to make the glow stars glow, did we?
07:17No, Nina.
07:18They glowed all by themselves.
07:20Oh, well, it certainly looked like that, Jack.
07:22Well, I know something else that glows in the dark that might help us solve this mystery.
07:27Shall we go and see it?
07:28Yeah.
07:28Yeah.
07:29Ha-ha, brilliant.
07:30Okay, goggles off, everyone.
07:35I love this bit.
07:37I wonder where Nina is taking us.
07:39Nina said we were going to see something that glows in the dark.
07:43But I don't know how.
07:45It's not even dark outside.
07:47Well, we're here.
07:50But I can't see anything glowing at all.
07:54Wow.
07:55Look at the size of that dinosaur.
07:58I hope it's not hungry.
08:01Don't worry, bud.
08:02I don't think it finds taste buds very tasty.
08:05Oh, hi, Nina.
08:06I've been expecting you.
08:07Oh, hi, Joe.
08:08Thanks very much for inviting us to the museum.
08:11Guys, the things we've come to see are inside this room.
08:14Be prepared to be amazed.
08:22So, guys, this is what we've come to see.
08:25Some very special rocks.
08:27Well, they don't look very special to me.
08:30They just look like...
08:31Rocks?
08:32Exactly.
08:33They may just look like ordinary rocks now.
08:36But when we dim the lights, something very special is going to happen.
08:42Oh.
08:43Em, am I missing something here?
08:46I can't see anything.
08:49I think we're all completely in the dark, bud.
08:52Especially Nina.
08:54Oh, I forgot to switch on my special torch.
08:58Here we go.
09:01Wow.
09:02Wow.
09:03Wow.
09:03Look at that.
09:05Can you see what's happening?
09:06The rocks are glowing all different colors, Nina.
09:10Yes.
09:11The rocks are glowing because there's a special light shining on them that makes them glow.
09:16And it's called ultraviolet light.
09:18And it's coming from this special torch.
09:23Jill, can we have the normal lights back on now, please?
09:27The rocks have stopped glowing, Nina.
09:29That's because I've turned off the special torch.
09:33But our glaciers keep glowing for ages, Nina.
09:37They do, don't they?
09:38Oh, I think we need to go back to the lab for one final experiment.
09:42Yeah!
09:46So, your question was, how do the stars in our ceilings glow in the dark?
09:51The rocks in the museum, they glowed when ultraviolet light shone on them.
09:55Could ultraviolet light be making our glow stars glow?
09:58I think we need to do an experiment to find out.
10:01OK, each of these envelopes has a glow star in it.
10:05Now, this means that they haven't had any light shine on them.
10:08They've been kept in the dark.
10:10So, do you think they'll glow?
10:12Yeah!
10:15Now, take out your glow stars and let's see if they glow.
10:18Is it glowing?
10:20No.
10:21There's not any light coming from it.
10:23You're absolutely right.
10:24But you guys have proved that glow stars do not glow if they've been kept in the dark.
10:29Well done.
10:30OK, pop the glow stars back into the envelopes.
10:33Lights up.
10:35OK, next, when we take the stars out, we're going to place them under the lights in front of you.
10:43Jack, you have the ultraviolet torch.
10:45Mia, you've got a normal torch.
10:47And Razzie, you have a normal lamp like you might find at home.
10:50OK, guys, switch your lights on.
10:53And I'll dim the lights again.
10:56OK, take the stars out of your envelopes and place them in the light in front of you.
11:02We're going to leave the stars in the light for about five minutes.
11:07Right, let's see if the glow stars are glowing.
11:11Jack, can you turn your ultraviolet torch off for me, please?
11:18Look at your star.
11:19It's still glowing.
11:21And that's because your torch gives out only ultraviolet light.
11:26And glow stars need ultraviolet light to make them start to glow, just like the rocks in the museum.
11:31But with glow stars, they keep on glowing even when the ultraviolet light has stopped.
11:38So can you turn your lights off for me, please?
11:40And let's look at your glowing stars.
11:42Are they glowing?
11:43Yeah.
11:44Yeah.
11:44They are, but they're not glowing quite as much as Jack's star, are they?
11:49No.
11:50Mia, your torch and Razzie and your lamp, you have normal light bulbs.
11:54But even in normal light bulbs, there's a little bit of ultraviolet light.
11:58And that's enough to make the glow stars glow.
12:03So your question was, how do the stars in our ceilings glow in the dark?
12:08And I think we've answered it.
12:10Glow stars glow because of ultraviolet light.
12:13Now there's a little bit of it in ordinary light bulbs and lots of it in sunlight.
12:19So when the sunlight shines in your window or the lights from your bedroom shine on your glow stars, they
12:26start to glow.
12:27And then when you turn the lights off to go to sleep, the glow stars keep on glowing.
12:32But it doesn't last forever.
12:34The glow fades away when the stars have been kept in the dark for too long.
12:38But I hope that's answered your question.
12:40Thanks, Nina.
12:41Bye.
12:42Bye.
12:46If you want to know more about the science that's all around us, go to the Nina section on the
12:51CBB's website.
12:52Have fun.
12:54Lab coat on, Nina.
12:55Lab coat on, Ollie.
12:57Safety gloves on, Nina.
12:59Safety gloves on, Felix.
13:01And don't forget your goggles, Nina.
13:03Goggles are on, look.
13:04I think we're ready.
13:08We do experiments in the lab.
13:10In a lab.
13:11Shoo-dee-dee-dee.
13:12In the lab.
13:14Bubbling experiments in the lab.
13:16In the lab.
13:17Go, Nina.
13:18In the lab.
13:20We save a puppet, steam and smoke.
13:23We need protection, don't we, folks?
13:26We always put our safety first.
13:29Shoo-dee-dee-dee-doe-dee-dee.
13:32We do experiments in the lab.
13:34In the lab.
13:35Go, Nina.
13:36It's been a marvelous day.
13:38The glow stars glowed without plugs or batteries.
13:42I really enjoyed myself today, especially when Nina mixed the chemicals together.
13:48Ah, it's been such a great dear man, seeing those rocks glow under the ultraviolet light.
13:55I've had a fabby day! Finding out how the glow star's glow was brilliant!
14:03Our day's been bursting with sensational experiments. I hope you've enjoyed it. See you soon. Bye!
14:09Bye!
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