Eyes See Nina and the Neurons: Brilliant Bodies


Eyes See

Scientist Nina and her young experimenters investigate the human body. Experimenters Megan, Thomas and Zara visit Nina in her lab and learn all about eyeballs.


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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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"Eye-eye", Captain! Oh, hello there! He-he.

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"Eye" had no idea you were watching me.

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I'll be with you in the blink of an eye.

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BEEP!

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

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-ALL: Hi, Nina!

-Hi, guys!

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-We've got a question.

-How do our eyes help us see?

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That's a great question! How do our eyes help us see?

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Eyes are an amazing part of our brilliant bodies,

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and "eye" have often wondered that myself. Ha-ha!

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Why don't you come to the lab, and we'll investigate?

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ALL: See you soon, Nina! Bye!

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I'll need some help to answer this and I know 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 our eyes help us see?"

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Which Neuron will be most useful in helping us 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?

-I send messages to brain from ear.

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If there's a sound, I'll help you hear.

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-Will it be lovely Luke?

-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?

-If it's pongy or whiffy

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but you can't tell, I help your sense of smell.

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-Or will it be baby Bud?

-Sour, salty, bitter or sweet,

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I'm your taste buddy whenever you eat!

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COMPUTER BEEPS

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It's Luke! CHEERING

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ALL: Go, Luke! Go, Luke! Go, Luke! Go, Luke! Go, Luke! Go, Luke!

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Cool, Nina! I'll be looking out to help you!

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Today's question is, "How do our eyes help us see?"

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Looking and seeing are definitely a job for Luke.

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He'll be helping to answer this.

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I better get the lab ready before the Experimenters arrive.

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Zara likes fairy-tales, Thomas likes classic cars.

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Megan loves ice-skating.

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But they all want to know how eyes help us see.

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Today, Zara, Thomas and Megan become the Experimenters!

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-Hi guys!

-ALL: Hi, Nina!

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Welcome to my science lab! Your question is,

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"How do our eyes help us see?"

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Why do you want to know?

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We know we look at things with our eyes...

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But we want to know how our eyes help us to see.

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Our eyes are incredible. This will be fun to investigate.

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Let's start by using our senses.

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ALL: Whoop! Woo!

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A senses experiment! We're ready, Nina!

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-This is a model of an eye. What shape is it?

-Round.

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Yes, our eyes are actually round, like a ball.

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That's why we call them our eyeballs.

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We can't see this normally,

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because most of our eye is hidden inside our head.

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Our eyes are the same shape and size as this ping-pong ball.

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And what are balls good at doing?

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-Rolling!

-Exactly.

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Let's all try rolling our eyes around in our heads.

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Wooh...Wooh... He-he-he!

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ALL: Ooh, woah! Ah! Wooh! Ah!

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Ha-ha-ha-ha-ha!

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Rolling movements help us see in different directions.

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We can look up here,

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down here,

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and over here,

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all without moving our heads.

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If our eyeballs couldn't roll,

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we'd have to use our necks to move our heads

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to look in a different direction.

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Our eyes give our necks a rest by rolling around,

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and in another way, too.

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Can you put your arms straight out in front of you?

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Keep our heads still.

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Looking straight forward, let's move our hands out to the side, slowly.

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Now, stop and tell me when you can't see your hands.

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I can't see my hands now, Nina.

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OK. Wiggle your fingers, and move your arms a tiny bit forward

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until you can just see them again.

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-Can you see your hands again?

-Yes.

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Our eyes help us see all the way around to here,

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without moving our heads.

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That's amazing! We can see SO much!

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We only have to turn our heads to see things that are behind us.

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-BOO!

-Oh-ho-ho! Good one, Bud!

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Having two eyes helps us to see from here to here.

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And there's loads more to discover about our amazing eyes.

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For our next experiment,

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we'll see something that's good at opening and closing.

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-Let's go, Experimenters!

-ALL: Yay!

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Hmmm. Where do you think we're going today?

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Nina said something about opening and closing.

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Curtains are good at opening and closing

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So are doors. And, a-ha! I see a door, right there.

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Well, we're here. I get the feeling we're in for a surprise!

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I've brought you to this theatre,

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it's the "eye-deal" place to learn about eyes! Let's go, Experimenters!

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Hey, Nina. What's happening?

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Oh! We've come to see something very special,

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but I can hardly see anything at all.

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It's too dark, Nina. We need to put the lights on.

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Oh, that's better.

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Thanks, Rory!

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It's difficult to see in the dark, because our eyes need light to see.

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The light around us goes into our eyes through

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the little black circle in the middle.

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We call this our pupil.

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Pupil - isn't that the name for a child in school, Nina?

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Yes, Belle.

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But the black circle in our eye is a different type of pupil.

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The coloured circle around the pupil is called the iris,

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and it has a really important job to do.

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It controls the amount of light that gets into the eye.

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The iris works in the same way as the special lights

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we've come to see here today.

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This is part of a special light,

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like the one that's shining down on the stage.

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What can you see happening?

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The circle in the middle is getting bigger and then smaller.

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That's right! And this is just like our iris.

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When there's not much light, the iris opens up,

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making the pupil bigger, so it can let in as much light as possible.

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When we're somewhere bright, the iris doesn't need

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to let in as much light, so the iris makes the pupil smaller.

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Can you close the iris on the light for me, please, Rory?

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You see? As the iris closes, less light shines through.

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Can you open the iris again, please?

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When the iris opens, more light shines through.

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Let's try another experiment.

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Thomas, can you face the front and close your eyes for me, please?

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Right, Zara, Megan, I want you to watch carefully

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when Thomas opens his eyes and tell me what you can see.

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OK, Thomas. One, two, three...open!

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What can you see happening?

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The black circle got smaller.

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Yes, Zara!

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When Thomas opened his eye, the pupil was quite big,

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and lots of light rushed in.

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The iris needed to stop so much light getting in,

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so it closed quickly.

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But remember, too much light is not good for the eye.

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That's why you should never look directly at the sun

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or bright lights.

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To see well, our eyes need just the right amount of light.

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Not too much and not too little.

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But how else do our eyes help us see?

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Time to go back to the lab for a final experiment.

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ALL: Yeah!

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OK. Another amazing thing about our eyes is that

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they let us see how near or far away something is.

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For example, I can see that you guys are quite near to me,

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but Mr Skeleton is further away at the other side of the lab,

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and this is really useful in helping us to do things

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like picking something up, or catching something.

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In fact, I've got a great ball game which will help to explain.

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Go over there for me.

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Yes! I love games!

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Let's go!

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Yay!

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Yes, very good! So, you're able to catch the balls quite easily.

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So, let's play catch again, but this time,

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you're only going to use one eye.

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So, close one eye for me and keep it closed.

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-Wow!

-Good catch.

-Yes!

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-Well done.

-Oops! Oh, you've dropped one.

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Ohhh! How did you find the catching that time?

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It was more difficult.

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Why do you think it was harder to catch with one eye closed?

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Because we couldn't see as well.

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That's right! Having two eyes helps us to see

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how near or far things are from us.

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By closing one eye, you only got half the information

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you needed to work out how far away the balls were, so you missed some.

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Of course, not everyone has two eyes that work well.

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If someone can't see with one of their eyes,

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they get used to seeing this way, and get much better at working out

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how near or far things are with one eye.

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# Nina and the Neurons. #

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Your question was "How do our eyes help us see?"

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And I think we've answered it.

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Because our eyes are round balls,

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we can roll them around and look in different directions.

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Our eyes also let us see all the way from here to here

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without moving our heads.

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We discovered that eyes need light for us to see,

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and light enters through the black circle called the pupil.

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The coloured part of the eye is the iris,

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and its job is to make the pupil get bigger to let more light in

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when it's dark and to get smaller to let less light in when it's bright.

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And finally, we discovered that having two eyes helps us

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to work out how near or far things are away from us.

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-So I hope that's answered your question!

-ALL: Thanks, Nina. Bye!

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You're welcome. Bye!

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To find out more about the science all around us,

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go to the Nina section on the CBeebies website. Have fun!

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-# Hearts beating

-Lungs breathing

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# Fingers feeling

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# Mouths eating

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# And don't forget your brain!

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# Brilliant bodies, brilliant bodies

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# Inside and out

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# Brilliant bodies, brilliant bodies

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# Come on, let's find out about

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# Our happy hands and bendy knees

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# Stretchy backs and noses that sneeze

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# We all have brilliant bodies

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# Brilliant bodies!

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# Every part has a job to do

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# Even scabs and earwax too!

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# We all have brilliant bodies

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# Brilliant bodies!

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# Brilliant bodies, brilliant bodies

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# Lashes to protect our eyes

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# Brilliant bodies, brilliant bodies

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# And don't forget to exercise. #

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It's been a marvellous day.

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All that eye-rolling was fabulous fun,

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though I did feel a little giddy.

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I really enjoyed myself today. All that finger-wiggling

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to see how far round the Experimenters could see.

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Oh, I've had a brilliant day!

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Finding out what a pupil is.

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Ah, it's been such a great day, man.

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Seeing how the colourful iris

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lets just the right amount of light into our eyes.

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Remember, everyone's body is different,

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but they're all brilliant. See you again soon! Bye.

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ALL: Bye!

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Nina investigates how eyes let people see, with the help of Luke, her sight neuron. Experimenters Megan, Thomas and Zara visit Nina in her lab and discover that round eyeballs are brilliant at rolling around. This means that people can look in lots of different directions without moving their heads.

They visit a theatre and find out that eyes need light to see. The light enters the eye through the little black circle called the pupil, and the coloured part of the eye - the iris - opens and closes to let more light into the eye when it is darker, and less light in when it is bright.

Back at the lab, they play a game of catch and discover that having two eyes helps people to work out how near or far away something is.


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