Mobile Phones Nina and the Neurons


Mobile Phones

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# If you've got a question and you don't know where to go

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# Ask Nina for some help Cos she's got a science show

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# She makes sense of her senses While helping all her fans

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# By doing her experiments with potions and with bangs

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-# Touch your tongue

-Tongue!

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-# Fingers

-Fingers!

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-# Eyes.

-Eyes!

-Ears.

-Ears!

-Nose.

-Nose!

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# Nina and the Neurons find out what you need to know

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# Nina and the Neurons find out what you need to know

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# Luke, he helps us with our eyes and Felix with our touch

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# Ollie sniffs out smells and scents And Belle, she hears so much

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# Bud is Ollie's brother He helps us with our taste

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# They're Nina's little Neurons And they're coming to your place!

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-# Touch your tongue

-Tongue!

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-# Fingers

-Fingers!

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-# Eyes.

-Eyes!

-Ears.

-Ears!

-Nose.

-Nose!

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# Nina and the Neurons find out what you need to know

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# Nina and the Neurons find out what you need to know

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# Oh yeah! #

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"C U later!"

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Oh, hello. I am just sending a text message to my friend.

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There it goes!

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Beep!

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I hear a beep, I see a flash, I wonder what they are going to ask.

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-BOTH: Hi, Nina.

-Hi, guys.

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-We've got a question for you.

-How do mobile phones work?

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That's a great question.

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How do mobile phones work? It takes some very clever engineering.

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Come down to my workshop and we'll investigate.

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-BOTH: See you soon, Nina, bye.

-Bye!

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I'll need help to answer this, and I know just who to ask.

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OK, Neurons, time to get to work.

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ALL: Neurons at the ready, Nina.

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OK. Today's question is, how do mobile phones work?

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Which Neuron will be most useful to help find the answer?

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ALL: Me! Me! Me! Oh, me!

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Will it be fabulous Felix?

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I can help so very much if you need the sense of touch.

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Will it be beautiful Belle?

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I send messages to brain from ear. If there's a sound, I'll help you hear.

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Will it be lovely Luke?

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For looking and seeing, day or night,

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I'll help you with your sense of sight.

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Will it be awesome Ollie?

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If it's pongy or whiffy but you can't tell,

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-my messages help your sense of smell.

-Or will it be baby Bud?

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Sour, salty, bitter or sweet, I'm your taste buddy whenever you eat!

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It's Belle!

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ALL: Go, Belle! Go, Belle! Go, Belle!

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Go, Belle! Go, Belle! Go, Belle! Go, Belle!

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Brilliant! I am all ears, Nina.

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Today's question is - how do mobile phones work?

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Because we use our ears to hear mobile phones, Belle will help us.

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Standby, Neurons, I may need help from all of you.

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I need to get the workshop ready before the engineers arrive.

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Reo likes painting on rainy days. Kaitlyn loves dolls.

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My mum talks to lots of people on mobile phones.

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My mum can talk to people far, far away.

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So today, for one day only, Reo and Kaitlyn become the engineers!

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-Hi, Reo. Hi, Kaitlyn.

-BOTH: Hi, Nina.

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Welcome to my workshop.

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Thanks for your question - how does a mobile phone work?

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To find out more, I think we need to start by using our senses.

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All: Woo-hoo, a senses experiment! We're ready, Nina!

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First, let's have a look at a mobile phone.

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When we use a mobile phone to talk to a friend,

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we type the number and then our friend's phone will ring

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and when they answer it, we can talk to them. Hello.

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NEURONS: Hello, Nina.

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Ha, ha!

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And we can do that with a telephone like this one, too.

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This house phone needs a box connected to the wall

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with wires to work.

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It only works in or near the house

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because it sends calls through the wires.

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A mobile phone can make a call from almost anywhere,

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and that is because mobile phones send calls through the air.

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To send a phone call, we use something called a signal.

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Oh, I like the sound of that word! Signal.

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Signals from our mobile phones travel through the air

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to other mobile phones. That's how we talk to each other.

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I have got some different mobile phones.

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-Do you see this bit sticking up?

-BOTH: Yes.

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That's called an aerial,

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and it is the most important part of the phone.

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All mobile phones have one,

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but sometimes they are hidden inside,

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so you don't see them, like in these phones here.

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And in my phone, too.

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You can't see the aerial at all.

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So let's find out a bit more about aerials and signals.

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We can't see signals, but if we could,

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they would look like this message on a line.

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Let's imagine that this line is the signal

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and the paper message is your friend talking to you.

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We want to move the message along the line

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so that aerial on the mobile phone can pick it up.

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Let's give it a go.

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Reo, do you want to pass the message along the signal?

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Hooray! We have picked up a message from Reo. Woo-hoo!

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So we can hear him talking to us.

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To talk back to him, our mobile phone needs to send a signal, too.

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Pop that on the bottom one and Reo will be able to pick it up

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using the aerial on his mobile phone.

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Go, Kaitlyn!

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Here it comes, Reo.

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Great! Fantastic, guys.

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Aerials can send and pick up signals,

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that's how we talk to each other.

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We don't need an aerial to pick up what you say, Bud.

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-You are loud enough!

-Ha, ha, ha!

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Mobile phones send and pick up signals so that we can talk

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and listen to our friends.

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But some friends might be a very long way away, so engineers

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realise that the signal might need some help to get there.

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Let's go and get some fresh air to find out more.

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Where do you think we are going today?

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Nina said we're going to get some fresh air.

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Can you find that in a supermarket?

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No, Bud. Going to get some fresh air means going outside.

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We are about to find out. Looks like we are here, everyone!

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Here we are outside, in the fresh air,

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and I have a challenge for you. Have a look around

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and see if you can see something that looks like an aerial

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that can pick up or send signals.

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-Can you see anything?

-BOTH: No, Nina.

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Well, have a look over there.

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I think you have got that wrong, Nina, that is a lamp post.

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No, Luke, I'm not wrong. This might look like a lamp post,

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but it is actually a mobile phone mast.

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Mobile phone masts are big aerials,

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like the ones we have in our mobile phones.

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When we phone a friend, the signal goes to a mast

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and then the mast passes the signal on

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to our friend's phone.

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And masts can also help the signal to travel quite far.

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Come with me.

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Welcome to our pretend town on this misty day.

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If you have a look, our pretend town is divided into parts.

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That is because in real cities, towns and villages,

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they are divided into parts,

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and each part has its own mobile phone mast.

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So we are going to put a mobile phone mast into every part

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in our pretend town.

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And we're going to use these flags.

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Ha, ha, ha! Ready? Go!

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Go, go, go! Go, go, go!

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Excellent work, Kaitlyn. There you go, Reo.

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Well done! Go, go, go! Here's a yellow one!

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That's it! Remember to put a mast in every part.

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That's it, Reo.

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That's great. Come back over.

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Brilliant work, engineers!

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We now have enough mobile phone masts

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so all the people in our pretend town can make mobile phone calls.

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The number of mobile phone masts across the country can be

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quite different, it all depends on how big the place you live is.

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In a big city, there could be hundreds of mobile phone masts.

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But in a small village, there might just be a few.

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Let's go for a little walk around our pretend town. Follow me!

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When we are in this part of town,

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this blue flag is our nearest mobile phone mast.

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If we made a mobile phone call, this mast would send the signals

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from our phone to our friend's phone.

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But if we move to this part of town...

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Ho, ho, ho!

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..then the red flag is our nearest mobile phone mast.

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And this mast would send the call to our friend's phone.

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Ring, ring! Bud calling Nina.

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-What is it, Bud?

-How does a mobile phone mast actually work?

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That's a very good question. It is time for one final experiment.

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OK, we are here in our pretend town.

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Kaitlyn, I'd like you to stay here at home.

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I'm going to go off into town. See you later.

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So, here I am over here. I am doing some shopping in town.

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Kaitlyn, you are going to call me on your mobile phone and, Reo,

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you are going to be the mobile phone signal.

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Kaitlyn, make your call.

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I hope they don't get the wrong number.

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Now you've typed in the number,

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your mobile phone is going to send a signal to the mobile phone mast

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that is nearest to you.

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So, signal Reo, find the nearest mobile phone mast to Kaitlyn.

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Brilliant! Kaitlyn's phone signal has reached the mast.

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Now, that mast needs to send a signal to the mast that is

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nearest to me.

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So, Reo, can you spot which flag is nearest to me?

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-The red one!

-Yeah! Go, go!

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So, the signal is nearly here.

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It just needs to get from the mobile phone mast to my phone.

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Eh! Kaitlyn is saying hello. Yay, we have done it, guys. Well done!

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But for me to talk back to Kaitlyn,

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my phone needs to send a signal to her.

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So... Here is my message.

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There you go.

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Well done, everyone. We can finish our call now.

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Boop.

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Your question was - how do mobile phones work?

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I think we've answered it.

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We discovered that mobile phones don't use wires.

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They make phone calls by sending and picking up signals through the air.

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Mobile phone masts help the signals from our phone reach all

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the way to our friend's phone.

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We also discovered that cities, towns and villages are divided

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into parts, and each part has a mobile phone mast.

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These masts can help send signals backwards and forwards to our phones

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so we can speak to our friends from almost anywhere.

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-I hope that answered your question.

-BOTH: Thanks, Nina. Bye!

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Oh, we have been really busy! Just like a mobile phone signal.

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If you want to know more about the science and engineering

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that's all around us, visit the Nina section

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on the CBeebies website. Have fun!

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-# Pulling.

-Pushing.

-Twisting.

-Mixing.

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-# Drilling.

-Squeezing.

-Floating.

-Go engineering

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# Go engineering!

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# When you need to fly it make it, shape it

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-# Go engineering

-Go engineering!

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# When you want to build go engineering

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# Engineering!

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# When you've got to solve a problem but you don't know how to do it

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# It's time to go engineering

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# Engineering!

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# When you want to lift it stick it, pop it, bend it

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# It's time to go engineering

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# Engineering!

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-# Go engineering

-Go engineering!

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# When you need to fly it make it, shape it

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# Engineering!

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-# Go engineering

-Go engineering!

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# When you want to build go engineering

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# Go engineering! #

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Oh, I've had a brilliant day

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learning all about aerials and signals.

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It's been a marvellous day!

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Who'd have thought that places had so many mobile phone masts?

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I've had a fabby day!

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Signals work really hard to help make a call.

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Remember, engineers help to build the world around us.

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They make things work and use science to solve problems.

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See you again soon, bye!

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NEURONS: Bye!

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Subtitles by Red Bee Media Ltd

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