Skip to playerSkip to main content
  • 2 months ago

Category

People
Transcript
00:00If 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 bats.
00:17Touch her tongue, fingers, eyes, ears, nose.
00:24Nina 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's lips are snuffings and some bells she hears so much.
00:35But it's Ollie's brother, he helps us with our taste.
00:38Then he knows the new 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!
00:54Oh hello!
00:57I'm just writing myself a little note.
01:00Look!
01:01What do you mean you can't see it?
01:04Okay, I've lost my normal pen, so I'm writing an invisible ink.
01:08It's to remind me to buy a new pen.
01:15Ha ha!
01:16Oh!
01:17I hear a beep, I see a flash.
01:19I wonder what they're going to ask.
01:24Hi Nina!
01:25Hello there!
01:27We've got a question for you, Nina.
01:30How do the stars on our ceilings glow in the dark?
01:33That's a great question.
01:35How do the stars on 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!
01:45Bye!
01:47Well, I'm going to need some help to answer this one
01:49and 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
02:10how do the stars on our ceilings glow in the dark?
02:13Now, which neuron do you think will be most useful
02:15in helping us find the answer?
02:17Me!
02:17Me!
02:18Me!
02:18Will it be fabulous, Felix?
02:20I can help so very much
02:22if you need the sense of touch.
02:25Will 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,
02:35I'll help you with your sense of sight.
02:37Will it be awesome ollie?
02:40If it's pony or withy, but you can't tell,
02:42my messages help your sense of smell.
02:44Or will it be baby bud?
02:46Sour, salty, bitter or sweet,
02:49I'm your taste buddy whenever you eat.
02:51It's luch!
02:56Yes!
02:58Gell-a-luch, gell-a-luch, gell-a-luch, gell-a-luch, gell-a-luch, gell-a-luch, gell-a-luch.
03:05Cool, Nina.
03:07I'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,
03:15look, 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.
03:26Jack loves making puppets.
03:27Mia's learning Mandarin.
03:29But they all want to know more about glow stars.
03:31So today, for one day only,
03:34Razzie, Jack and Mia become the experimenters.
03:39Hi, Nina.
03:40Hi, Nina.
03:40Welcome to my science lab.
03:42Come in.
03:43So, your question was,
03:45how do the stars on our ceilings glow in the dark?
03:49So why do you want to know that?
03:50Because I've got a glow moon in my bedroom
03:52and 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,
04:01we're going to be using these glow stars and our senses.
04:05Whoop-whoop!
04:06A senses experiment!
04:08We're ready, Nina!
04:09Now, the first thing we're going to do
04:11is dim the lights to make it darker
04:12so we can see what 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,
04:22I've got some of my own glow stars around the lab.
04:25I've got some over there, too.
04:26They look like they're shining in the dark.
04:30Yeah.
04:31Now, when something glows brightly,
04:33it's giving off light, isn't it?
04:35Yeah.
04:35Yeah.
04:36Now, let me just put the lights back up.
04:39OK, so let's look at some other things
04:41that give off light,
04:43like 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.
04:54I haven't plugged it in.
04:55And this light needs electricity to work.
04:58Now, I'll do this
04:59because plugs and sockets can be dangerous.
05:06Hooray!
05:06Now that we've plugged the lamp in,
05:09the light is glowing brightly.
05:11Hee-hee.
05:11Oh, and here's a torch.
05:14The torch doesn't have a plug,
05:15but it still lights up.
05:17Look.
05:19Hey!
05:20And that's because of these.
05:24Now, do you know what these are?
05:25Batteries.
05:26That's right, batteries.
05:27But these aren't for playing with either.
05:29So, to give a glowing light,
05:32we had to plug in the lamp
05:33and we had to use batteries for the torch.
05:36But the glow stars,
05:37they weren't plugged in
05:38and 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
05:51and put on our safety goggles.
05:55And as I'll be using some chemicals,
05:57I'm going to be wearing my safety gloves too.
05:59Mixing chemicals can only be done in Nina's lab.
06:04You should never try mixing things yourself.
06:06OK, in these beakers are some very special chemicals.
06:11Now, they don't look very special right now,
06:13but I'm going to mix them up.
06:16Ooh.
06:17And now I'm going to dim the lights.
06:23And watch this.
06:26Ooh-hoo-hoo-hoo!
06:28Wow!
06:28Now, I'll do the next one.
06:36Ooh!
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,
06:54they give off a glowing light
06:56and this is called luminescence.
06:59Lumen!
07:00Lumen!
07:01That's a difficult word to say, Nina!
07:04But luminescence is really useful
07:07because it means we can make light
07:09without plugging things in or using batteries.
07:12Hmm.
07:13But we didn't mix different chemicals together
07:15to make the glow stars glow, did we?
07:17No, Nina.
07:17They glowed all by themselves.
07:20Oh, well, it certainly looked like that, Jack.
07:22I know something else that glows in the dark
07:25that might help us solve this mystery.
07:27Shall we go and see it?
07:28Yeah.
07:28Yeah.
07:29Ha-ha, brilliant.
07:29OK, 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
07:42that glows in the dark,
07:43but I don't know how.
07:45Well, it's not even dark outside.
07:48Well, we're here.
07:50And I can't see anything glowing at all.
07:52Wow!
07:55Look at the size of that dinosaur!
07:59I 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
08:12are inside this room.
08:14Be prepared to be amazed!
08:16Ho-ho!
08:20Ho-ho-ho!
08:21So, guys, this is what we've come to see.
08:25Some very special rocks.
08:27Ho-ho!
08:28Well, 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,
08:38something very special is going to happen.
08:42Oh.
08:43Em, am I missing something here?
08:46I can't see anything!
08:48Ha-ha-ha!
08:49I think we're all completely in the dark, bud.
08:52Especially, Nina.
08:54Oh!
08:54Ho-ho!
08:55I forgot to switch on my special torch.
08:58Here we go!
09:00Wow!
09:02Wow!
09:03Look at that!
09:05Can you see what's happening?
09:06The rocks are glowing all different colours, Nina!
09:10Yes!
09:11The rocks are glowing
09:12because there's a special light shining on them
09:14that makes them glow.
09:16And it's called ultraviolet light.
09:18And it's coming from this special torch.
09:20Ho-ho!
09:22Ooh!
09:23Jo, can we have the normal lights back on now, please?
09:25The 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
09:40for one final experiment.
09:42Yeah!
09:42Yeah!
09:42So, your question was,
09:48how do the stars in our ceilings glow in the dark?
09:51The rocks in the museum,
09:52they 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.
10:09They've been kept in the dark.
10:10So, do you think they'll glow?
10:12Yes!
10:12Yeah!
10:15Now, take out your glow stars and let's see if they glow.
10:19Is it glowing?
10:20No.
10:21There's not any light coming from it.
10:23You're absolutely right.
10:25You guys have proved that glow stars do not glow
10:28if 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,
10:39we're going to place them under the lights in front of you.
10:42Jack, 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 and 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.
11:01We'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?
11:15Look at your star.
11:19It's still glowing.
11:21And that's because your torch gives out only ultraviolet light
11:25and glow stars need ultraviolet light to make them start to glow,
11:29just like the rocks in the museum.
11:31But with glow stars, they keep on glowing
11:34even 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, 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.
12:14Now, there's a little bit of it in ordinary light bulbs
12:16and lots of it in sunlight.
12:19So when the sunlight shines in your window
12:22or the lights from your bedroom shine on your glow stars,
12:26they start to glow.
12:27And then when you turn the lights off to go to sleep,
12:30the 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. Bye!
12:42Bye!
12:42If you want to know more about the science that's all around us,
12:49go to the Nina section on the CBB's website.
12:52Have fun!
12:52Lab 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.
13:11Should we be in the lab?
13:14Bubbling experiments in the lab.
13:16In the lab.
13:17Go, Nina.
13:18In the lab.
13:20We see the puppets, steam and smoke.
13:23We need protection, don't we, folks?
13:25We always put our safety first.
13:30Doobie, doobie, doobie, doobie.
13:32We do experiments in the lab.
13:34In the lab.
13:35Go, Nina.
13:36It's been a marvellous day.
13:39The glow stars glowed without plugs or batteries.
13:42I really enjoyed myself today,
13:44especially when Nina mixed the chemicals together.
13:48Ah, it's been such a great day, man,
13:51seeing those rocks glow under the ultraviolet light.
13:56I've had a fabby day.
13:58Finding out how the glow stars glow was brilliant.
14:02Our day's been bursting with sensational experiments.
14:06I hope you've enjoyed it.
14:07See you soon.
14:08Bye.
14:09Bye.
14:09Bye.
14:09Bye.
14:10Bye.
14:10Bye.
14:10Bye.
14:10Bye.
14:10Bye.
14:10Bye.
14:10Bye.
14:10Bye.
14:10Bye.
14:10Bye.
14:10Bye.
14:10Bye.
14:10Bye.
14:10Bye.
14:10Bye.
14:11Bye.
14:11Bye.
14:11Bye.
14:11Bye.
14:11Bye.
14:11Bye.
14:12Bye.
14:13Bye.
14:13Bye.
14:13Bye.
14:13Bye.
14:15Bye.
14:17Bye.
14:17Bye.
14:19Bye.
14:19Bye.
14:48Bye.
14:49Bye.
Be the first to comment
Add your comment

Recommended