Sliding Doors Nina and the Neurons

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

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

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

# By doing her experiments with potions and with bangs

-# Touch your tongue

-Tongue!

-# Fingers

-Fingers!

-# Eyes.

-Eyes!

-Ears.

-Ears!

-Nose.

-Nose!

# Nina And The Neurons find out what you need to know

# Nina And The Neurons find out what you need to know

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

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

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

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

-# Touch your tongue

-Tongue!

-# Fingers

-Fingers!

-# Eyes.

-Eyes!

-Ears.

-Ears!

-Nose.

-Nose!

# Nina And The Neurons find out what you need to know

# Nina And The Neurons find out what you need to know

# Oh yeah! #

Oh, hello!

I'm fixing my cupboard door. It wasn't opening properly.

But a new hinge and some oil has done the trick!

BEEPING

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

BOTH: Hi, Nina!

Hi, guys!

We've got a question for you. How do automatic doors know when to open?

That's a GREAT question!

How do automatic doors know when to open?

Automatic doors are a good invention,

you might use them at the supermarket!

They open and close without you having to touch them!

Come to the science centre and we'll investigate.

BOTH: Bye!

Bye!

I'm going to need help to answer this,

and I know just who to ask.

Ok, Neurons, time to get to work!

ALL: Neurons at the ready, Nina!

OK, today's question is, how do automatic doors know when to open?

Which neuron do you think will be useful in finding the answer?

ALL: Me! Me, me, me!

Will it be fabulous Felix?

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

Will it be beautiful Belle?

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

Will it be lovely Luke?

For looking and seeing, day or night,

I'll help you with your sense of sight.

Will it be awesome Ollie?

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

my messages help your sense of smell.

Or will it be baby Bud?

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

It's Luke!

Yes!

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

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

Cool, Nina!

I'll be looking out to help you!

Today's question is, how do automatic doors know when to open?

Now, we can SEE automatic doors opening, so,

Luke will be helping us today.

Stand by, Neurons. I may need you all!

I need to get the workshop ready for the inventors!

Gordon and Christopher want to know about automatic doors.

They close shut, they open wide, how do they know when to let us inside?

So today, for one day only,

Gordon and Christopher become the inventors!

Hi, guys!

BOTH: Hi, Nina.

Thank you for coming today! And your question was,

how do automatic doors know when to open? Why do you want to know?

When we go to the supermarket, we like to try and sneak up on them.

But they always know and open up!

There's some automatic doors behind us! Let's give it a go!

You got caught! Come back!

Oh! Ha-ha!

It's no use, Nina, those doors are too clever!

You're right, Luke.

And I think it's got something to do with that thing above the door.

To find out about how automatic doors know when to open,

let's go to the workshop!

Taking things apart is my job. It can be dangerous,

so don't do this yourself.

That's right. Nina's been specially trained to do this.

If you take things apart,

you might not be able to put them back together!

Now this is a sensor.

Let's have a look inside.

And does that sense when people's coming, Nina?

That's right, most automatic doors have these sensors above them.

So a sensor is an object that senses things. Just like we use our senses.

We have five senses

but an automatic door only has one sensor.

And it's called an infra-red sensor.

So to find out what an infra-red sensor does, let's do an experiment!

Do you think an automatic door can tell the difference

-between a real person and a cardboard one?

-No.

I'd like you to meet a friend of mine!

Cardboard Nina!

So let's go and see if she can open the doors!

Let's go!

Ready...steady...

Oh, no! I think we're heading for a...

THUD

Crash!

Oh, dear! The doors didn't open for cardboard Nina!

Let ME walk towards them.

Oh! But they opened for me!

Hmm! The automatic doors can tell the difference

between a cardboard person and a real person!

And that's because their infra-red sensor can see heat.

See heat? Surely you mean feel heat, Nina?

No. People feel heat with their skin if they touch something warm,

an infra-red sensor is different.

It can see heat from a distance.

And because people's bodies are warm,

the sensor can see people coming and open the door!

And I know something very big and exciting

that can see heat from a distance.

Shall we go and see another invention?

-BOTH: Yeah!

-Let's go!

Look at them go! I wonder where they'll end up today.

Oh, what's big and exciting and uses infra-red sensors?

Hmm. That's a difficult one.

I really don't know!

Oh, OH! I think we've arrived!

So, THIS is the invention we've come to see!

A helicopter!

But it's a very special helicopter.

It's a search and rescue helicopter.

If people get lost in the snow or the mountains,

a helicopter like this helps them.

How does it know where to look?

Well, let's do an experiment.

Around here, one of the search and rescue team are hiding.

Can you see them?

I can't see anyone!

It's difficult!

But, there's something very useful on the helicopter!

We're going to look at pictures from a thermal-imaging camera,

which is mounted outside of the helicopter,

and it can see heat, just like an automatic door can!

On the screen we can see things that are cold

and things that are warm, like people.

So the more red something looks, the warmer it is.

And the more blue something looks, the colder it is.

Like this stuff here!

So, what can you see?

There's something red there!

So there is!

And I think this red blob is our search and rescue person!

Well done, inventors!

That's pretty amazing.

Being able to tell where the person is

by looking at the colours on the screen.

So, the thermal imaging camera can see something we can't.

Heat. Just like an automatic door.

This means the search and rescue teams can find people who are lost.

Let's go back to the workshop and get inventing.

Wow! Those inder...infer...

Infra-red, Bud!

Yeah! Infra-red sensors are really cool.

They help find people and open doors, too.

But who actually invented automatic doors?

Well, listen up! I can tell you that.

Over 50 years ago,

Lew Hewitt and Dee Horton noticed that they had lots of trouble

opening and closing ordinary doors on very windy days.

So the two men put their heads together, and had a think.

The next thing they knew,

they had invented the first ever automatic door.

What a pair!

So, you asked, how do automatic doors know when to open?

And so far we've found out that most automatic doors

have infra-red sensors that can see warm things like people.

When they see the warm things, they open the doors.

So let's get inventing and make our very own automatic doors!

The first thing we need to do is take the lid off the box.

We'll take a plastic bottle,

and draw around the bottom of the bottle.

Take some scissors, and let's cut along the lines.

Next we'll take one of our bottles,

turn it upside down,

and push it through. Yeah, that's it!

Excellent. And the same with the other one.

Can I have a paper fastener?

Pop the first one in.

Next we're going to take an elastic band,

and hook it on to the paper fastener at the back.

And then pull your string around the bottle,

bring it right round, then wrap it round the paper fastener.

This is going to be our wall.

And this is going to be our door.

Going to hook the door underneath the string,

like that.

More sticky tape.

Now, it's time to test it out!

There's a mini-Nina for you.

Now, let's see if Nina can walk towards the door,

oh! And she catches on the string.

Hey! It works, so well done, inventors,

we've made our very own automatic doors!

# Nina And The Neurons! #

So, your question was, how do automatic doors know when to open?

And I think we've answered it!

We found out that most automatic doors have a sensor,

that tells the door when people are coming,

and the sensor is called an infra-red sensor

and it can see heat.

And because our bodies are warm,

the sensor can tell we're real people and will open the door!

Thank you very much for your fab question!

-BOTH: Bye!

-Bye!

If you want to make today's invention,

just go to the Nina section on the CBeebies website.

That has the instructions to make your own.

Or, you may have other ideas on what to invent.

-Bikes!

-Skates!

-Binoculars!

-Televisions!

-Speakers!

-And cars!

# We all love inventing

# Ooh oh oh oooh-ooh

ALL: # Love inventing

# We all love inventing

# Why don't you try it too?

# Inventions make life easier

# And help us get things done

# Go inventing

# I always like to take a look

# At how they work and run

# Go inventing!

# We all love inventing

# Oooh oooh ooh, go inventing

# We all love inventing

# Why don't you try it too? #

Oh, it's been such a great day, man!

Seeing those automatic doors opening and closing

when anyone went near them.

I've had a fabby day!

The best bit was when the door wouldn't open for Nina!

Cardboard Nina, that is!

It's been a marvellous day.

It was good to see how the infra-red detector can see heat

rather than feel it.

I really enjoyed myself today.

My favourite part was when everyone made their own automatic doors.

They worked really well.

Open sesame!

Our day's been bursting with inventions!

I hope you've enjoyed it! See you again soon, bye!

ALL: Bye!