Sliding Doors Nina and the Neurons


Sliding Doors

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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 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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Oh, hello!

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

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

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BEEPING

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

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BOTH: Hi, Nina!

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Hi, guys!

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

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That's a GREAT question!

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How do automatic doors know when to open?

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Automatic doors are a good invention,

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you might use them at the supermarket!

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They open and close without you having to touch them!

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Come to the science centre and we'll investigate.

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BOTH: Bye!

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Bye!

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I'm going to need help to answer this,

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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 automatic doors know when to open?

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

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ALL: Me! Me, me, 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.

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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 Luke!

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Yes!

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

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

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Cool, Nina!

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I'll be looking out to help you!

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

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Now, we can SEE automatic doors opening, so,

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Luke will be helping us today.

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Stand by, Neurons. I may need you all!

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I need to get the workshop ready for the inventors!

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Gordon and Christopher want to know about automatic doors.

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

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So today, for one day only,

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Gordon and Christopher become the inventors!

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Hi, guys!

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BOTH: Hi, Nina.

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Thank you for coming today! And your question was,

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

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

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But they always know and open up!

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

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You got caught! Come back!

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Oh! Ha-ha!

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

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You're right, Luke.

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

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

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let's go to the workshop!

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

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so don't do this yourself.

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

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If you take things apart,

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you might not be able to put them back together!

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Now this is a sensor.

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Let's have a look inside.

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

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

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

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We have five senses

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but an automatic door only has one sensor.

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And it's called an infra-red sensor.

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

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Do you think an automatic door can tell the difference

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-between a real person and a cardboard one?

-No.

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

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Cardboard Nina!

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

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Let's go!

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Ready...steady...

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

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THUD

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Crash!

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

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Let ME walk towards them.

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Oh! But they opened for me!

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Hmm! The automatic doors can tell the difference

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between a cardboard person and a real person!

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

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See heat? Surely you mean feel heat, Nina?

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

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an infra-red sensor is different.

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It can see heat from a distance.

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And because people's bodies are warm,

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the sensor can see people coming and open the door!

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And I know something very big and exciting

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that can see heat from a distance.

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Shall we go and see another invention?

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-BOTH: Yeah!

-Let's go!

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

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

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Hmm. That's a difficult one.

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I really don't know!

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Oh, OH! I think we've arrived!

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

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A helicopter!

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But it's a very special helicopter.

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It's a search and rescue helicopter.

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If people get lost in the snow or the mountains,

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a helicopter like this helps them.

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How does it know where to look?

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Well, let's do an experiment.

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

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Can you see them?

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I can't see anyone!

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It's difficult!

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

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

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which is mounted outside of the helicopter,

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

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On the screen we can see things that are cold

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and things that are warm, like people.

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

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

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Like this stuff here!

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So, what can you see?

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There's something red there!

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So there is!

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

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Well done, inventors!

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That's pretty amazing.

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Being able to tell where the person is

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by looking at the colours on the screen.

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

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Heat. Just like an automatic door.

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

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

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Wow! Those inder...infer...

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Infra-red, Bud!

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Yeah! Infra-red sensors are really cool.

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They help find people and open doors, too.

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But who actually invented automatic doors?

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Well, listen up! I can tell you that.

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Over 50 years ago,

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

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opening and closing ordinary doors on very windy days.

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

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The next thing they knew,

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they had invented the first ever automatic door.

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What a pair!

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

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

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

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

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

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

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We'll take a plastic bottle,

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and draw around the bottom of the bottle.

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

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Next we'll take one of our bottles,

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turn it upside down,

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

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Excellent. And the same with the other one.

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Can I have a paper fastener?

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Pop the first one in.

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Next we're going to take an elastic band,

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

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And then pull your string around the bottle,

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

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This is going to be our wall.

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And this is going to be our door.

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Going to hook the door underneath the string,

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like that.

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More sticky tape.

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Now, it's time to test it out!

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There's a mini-Nina for you.

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

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oh! And she catches on the string.

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Hey! It works, so well done, inventors,

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we've made our very own automatic doors!

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# Nina And The Neurons! #

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

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And I think we've answered it!

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We found out that most automatic doors have a sensor,

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that tells the door when people are coming,

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and the sensor is called an infra-red sensor

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and it can see heat.

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And because our bodies are warm,

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

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Thank you very much for your fab question!

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-BOTH: Bye!

-Bye!

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If you want to make today's invention,

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just go to the Nina section on the CBeebies website.

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That has the instructions to make your own.

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

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-Bikes!

-Skates!

-Binoculars!

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-Televisions!

-Speakers!

-And cars!

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# We all love inventing

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# Ooh oh oh oooh-ooh

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ALL: # Love inventing

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# We all love inventing

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# Why don't you try it too?

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# Inventions make life easier

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# And help us get things done

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# Go inventing

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# I always like to take a look

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# At how they work and run

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# Go inventing!

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# We all love inventing

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# Oooh oooh ooh, go inventing

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# We all love inventing

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# Why don't you try it too? #

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

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Seeing those automatic doors opening and closing

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when anyone went near them.

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I've had a fabby day!

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

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Cardboard Nina, that is!

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It's been a marvellous day.

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

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rather than feel it.

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I really enjoyed myself today.

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

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They worked really well.

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Open sesame!

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Our day's been bursting with inventions!

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

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ALL: Bye!

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