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This is Absolute Genius. | 0:00:02 | 0:00:03 | |
So sit down, buckle up and get ready for take-off! | 0:00:03 | 0:00:08 | |
Each show, we'll introduce you to a different genius, | 0:00:08 | 0:00:12 | |
an amazing person who had a genius idea which shaped the world. | 0:00:12 | 0:00:16 | |
And they will inspire us | 0:00:16 | 0:00:18 | |
to come up with our own genius idea at the end of each show. | 0:00:18 | 0:00:22 | |
-But will it be any good? -Will it be any good? | 0:00:22 | 0:00:25 | |
It'll be Absolute Genius! | 0:00:25 | 0:00:27 | |
'And on today's show...' | 0:00:28 | 0:00:30 | |
-He's nearly there. -'You'll be struck by the brilliance of one man.' | 0:00:30 | 0:00:33 | |
'An absolute genius whose powerful ideas changed the world.' | 0:00:33 | 0:00:38 | |
Prepare to be shocked! | 0:00:38 | 0:00:40 | |
Today, we're going to introduce to you a real bright spark. | 0:01:13 | 0:01:16 | |
Yeah, a genius who helped us understand electricity. | 0:01:16 | 0:01:19 | |
Without him, this show might have looked like this. | 0:01:19 | 0:01:22 | |
No, don't do that! | 0:01:22 | 0:01:24 | |
TUMBLING, SHOUTING | 0:01:24 | 0:01:26 | |
-Oh! -Ow! -Ooh! -Aah! | 0:01:26 | 0:01:29 | |
THUDDING, SMASHING | 0:01:29 | 0:01:31 | |
-Did you enjoy that? -Yeah. Yeah, I did. | 0:01:33 | 0:01:36 | |
Our whole world is alive with electricity. | 0:01:40 | 0:01:44 | |
If it hadn't been for today's genius and other pioneers like him, | 0:01:45 | 0:01:49 | |
we might never have understood its amazing possibilities. | 0:01:49 | 0:01:53 | |
Life would have been lit by candles. | 0:01:54 | 0:01:57 | |
Very dark. And very boring. | 0:01:57 | 0:02:00 | |
So who is today's genius? | 0:02:00 | 0:02:02 | |
Ladies and gentlemen, I give you... | 0:02:02 | 0:02:04 | |
Michael Faraday! | 0:02:04 | 0:02:06 | |
-You all right? -All right, duck. | 0:02:06 | 0:02:08 | |
Later on in the show, we'll be coming up with our own genius idea | 0:02:08 | 0:02:11 | |
when we put one of Faraday's discoveries to the test | 0:02:11 | 0:02:14 | |
with three-quarters of a million volts of electricity. | 0:02:14 | 0:02:17 | |
'Enough to stun Dick into silence.' | 0:02:17 | 0:02:20 | |
'For a bit!' | 0:02:22 | 0:02:23 | |
But first, let's find out more about the man himself. | 0:02:23 | 0:02:26 | |
Faraday was fascinated by electricity, | 0:02:29 | 0:02:32 | |
but what is it? | 0:02:32 | 0:02:33 | |
Electricity is a form of energy. | 0:02:33 | 0:02:35 | |
We depend on it for just about everything | 0:02:35 | 0:02:38 | |
from lighting up our homes to powering our TVS. | 0:02:38 | 0:02:41 | |
But more than 200 years ago, when Faraday was young, | 0:02:41 | 0:02:44 | |
none of these things existed. | 0:02:44 | 0:02:46 | |
Scientists were only just beginning | 0:02:46 | 0:02:48 | |
to unlock the incredible potential of electricity. | 0:02:48 | 0:02:51 | |
Faraday was intrigued. | 0:02:52 | 0:02:54 | |
But only rich and posh sorts got to be scientists, | 0:02:54 | 0:02:57 | |
and Faraday was neither. | 0:02:57 | 0:02:59 | |
But what he did have was access to loads of science books | 0:02:59 | 0:03:02 | |
because, when he was 14, Faraday was a bookbinder's apprentice. | 0:03:02 | 0:03:05 | |
He used to read about other people's experiments | 0:03:05 | 0:03:07 | |
and then decided he wanted to do his own. | 0:03:07 | 0:03:10 | |
-Come on, then. -Yeah. | 0:03:10 | 0:03:13 | |
Oh, dear... | 0:03:13 | 0:03:14 | |
So he came to the Royal Institution, the home of scientific research... | 0:03:14 | 0:03:19 | |
Don't touch it! | 0:03:19 | 0:03:21 | |
'..and persuaded them to give him a job as a lab assistant. | 0:03:21 | 0:03:24 | |
'Here, he made some of his greatest discoveries. | 0:03:26 | 0:03:28 | |
'You can almost smell the genius in the air!' | 0:03:28 | 0:03:31 | |
Can you smell a genius? | 0:03:31 | 0:03:33 | |
Faraday started experimenting with electricity, magnets and wire. | 0:03:37 | 0:03:41 | |
He invented the first electric motor, | 0:03:43 | 0:03:45 | |
a way of turning electricity into movement. | 0:03:45 | 0:03:48 | |
Modern-day motors are used in everything | 0:03:52 | 0:03:54 | |
from hairdryers to washing machines. | 0:03:54 | 0:03:56 | |
Look at that. This is actually Faraday's lab. | 0:03:56 | 0:03:58 | |
This is where he made all of his discoveries about electricity. | 0:03:58 | 0:04:02 | |
All the little jars and glass vials, | 0:04:02 | 0:04:04 | |
they all still have his writing all over them | 0:04:04 | 0:04:06 | |
and under that table, still got his chewing gum under there. | 0:04:06 | 0:04:09 | |
Well, I've got to put it somewhere! | 0:04:09 | 0:04:12 | |
Faraday's genius idea was to work out | 0:04:12 | 0:04:15 | |
the powerful relationship | 0:04:15 | 0:04:16 | |
between magnets and electricity. | 0:04:16 | 0:04:18 | |
Faraday found out you can use magnets to make electricity. | 0:04:21 | 0:04:25 | |
All you have to do | 0:04:25 | 0:04:26 | |
is move a magnet near a wire to get the electricity flowing and... | 0:04:26 | 0:04:31 | |
bingo! | 0:04:31 | 0:04:33 | |
By now, Faraday was becoming just a little bit famous. | 0:04:35 | 0:04:38 | |
His lectures at the Royal Institution | 0:04:38 | 0:04:41 | |
were the hottest ticket in town. | 0:04:41 | 0:04:42 | |
He loved an audience, and they loved him! | 0:04:42 | 0:04:46 | |
So this is the room | 0:04:46 | 0:04:47 | |
where Faraday used to perform all his experiments. | 0:04:47 | 0:04:50 | |
On this very spot, he used to show all the normos, | 0:04:50 | 0:04:53 | |
you know, the normal people, his experiments | 0:04:53 | 0:04:55 | |
and try to get them really enthusiastic and excited about it. | 0:04:55 | 0:04:58 | |
Seriously, it was like some kind of magic show back in the day. | 0:04:58 | 0:05:01 | |
Let's try it. Yeah? | 0:05:01 | 0:05:04 | |
Put it away. There's work to be done. | 0:05:06 | 0:05:09 | |
'To understand more about electricity, | 0:05:13 | 0:05:15 | |
'we're going to make our own, just like Faraday, | 0:05:15 | 0:05:18 | |
'then demonstrate it in front of an audience.' | 0:05:18 | 0:05:21 | |
We're Faradays in the making | 0:05:21 | 0:05:23 | |
To show us how, here's genius helper Olympia Brown, | 0:05:23 | 0:05:27 | |
who's in charge of Science Learning at the Royal Institution. | 0:05:27 | 0:05:30 | |
What was he like as a person? | 0:05:30 | 0:05:32 | |
Reports of people who knew him and worked here at the Royal Institution | 0:05:32 | 0:05:35 | |
say that he was a really nice guy | 0:05:35 | 0:05:37 | |
but he was absolutely fascinating when you heard him talk. | 0:05:37 | 0:05:40 | |
He had this amazing force of personality and amazing character | 0:05:40 | 0:05:44 | |
that just kept people entranced with what he was saying. | 0:05:44 | 0:05:47 | |
He became a bit of a celebrity in his day. | 0:05:47 | 0:05:49 | |
So back in those days, it wasn't someone who was on Big Brother, | 0:05:49 | 0:05:52 | |
it wasn't someone in OK Magazine, | 0:05:52 | 0:05:54 | |
it was people that had a big brain in their head | 0:05:54 | 0:05:57 | |
and could relate to people, they were the celebrities. | 0:05:57 | 0:05:59 | |
Yes, scientists were the celebrities of their day. | 0:05:59 | 0:06:01 | |
But we want to learn the basics of electricity | 0:06:01 | 0:06:04 | |
so have you anything we can...? | 0:06:04 | 0:06:05 | |
Absolutely. We've made a small Faraday generator. | 0:06:05 | 0:06:07 | |
Here we've got a coil of wire around this tube. Inside the tube, | 0:06:07 | 0:06:11 | |
we've got some very strong magnets | 0:06:11 | 0:06:13 | |
and here we've got a light. | 0:06:13 | 0:06:14 | |
There aren't any batteries in that, as you can see, | 0:06:14 | 0:06:18 | |
so you'd think that light wouldn't work, | 0:06:18 | 0:06:20 | |
but if I just do a simple bit of shaking... | 0:06:20 | 0:06:23 | |
Look at that! So how is that working? | 0:06:23 | 0:06:25 | |
As the magnets move through the coil of wire, it's causing | 0:06:25 | 0:06:28 | |
electricity to run through the wire and light up the lights. | 0:06:28 | 0:06:32 | |
So why was this discovery so important? | 0:06:32 | 0:06:34 | |
In fact, this exact same thing, | 0:06:34 | 0:06:36 | |
a magnet moving through a coil of wire, | 0:06:36 | 0:06:38 | |
is used in gas power stations, coal power stations, | 0:06:38 | 0:06:41 | |
even wind turbines, to generate the electricity that we all use. | 0:06:41 | 0:06:44 | |
Quite easy to make? | 0:06:44 | 0:06:45 | |
Yeah, in fact, you guys are going to do it yourselves. | 0:06:45 | 0:06:48 | |
I'll give you instructions. The stuff's behind you. | 0:06:48 | 0:06:50 | |
-I'm going to leave you to it. -Like being back at school! | 0:06:50 | 0:06:53 | |
'We've got one hour to prepare | 0:06:53 | 0:06:55 | |
'before recreating Faraday's experiment in front of an audience. | 0:06:55 | 0:06:59 | |
-'Olympia - any tips?' -Ah! | 0:06:59 | 0:07:01 | |
I think you need a passion for science | 0:07:01 | 0:07:03 | |
-to be a good science demonstrator. -Don't snip it. | 0:07:03 | 0:07:06 | |
Stop. | 0:07:06 | 0:07:08 | |
HE SNIPS No! | 0:07:08 | 0:07:09 | |
'Just like Faraday, | 0:07:09 | 0:07:10 | |
'we intend to pull off a perfectly polished performance.' | 0:07:10 | 0:07:13 | |
It's about moving a magnet through a coil of wire to create electricity. | 0:07:13 | 0:07:18 | |
-You're making electricity! -I am! | 0:07:18 | 0:07:20 | |
But can we do it again, on our own, in front of an audience? | 0:07:21 | 0:07:25 | |
They can be quite a challenging audience, actually. | 0:07:25 | 0:07:28 | |
Oh, Faraday. Wish us luck. | 0:07:28 | 0:07:29 | |
APPLAUSE | 0:07:32 | 0:07:34 | |
-All right? -Hey! | 0:07:34 | 0:07:37 | |
We're going to make a generator. | 0:07:37 | 0:07:39 | |
-First, we have some copper wire. -It is a conductor of electricity, | 0:07:39 | 0:07:42 | |
which means electricity passes right the way through it. | 0:07:42 | 0:07:45 | |
We've got to get this copper wire onto this tube. | 0:07:45 | 0:07:47 | |
We'll make it easier using this electric drill. | 0:07:47 | 0:07:49 | |
Don't go around grabbing your dad's drill at home. | 0:07:49 | 0:07:52 | |
Stuff it in. | 0:07:52 | 0:07:53 | |
-See that? -Then we can speed it up. | 0:07:53 | 0:07:56 | |
-So, top speed! Nnnn! -Stop! | 0:07:56 | 0:07:58 | |
It's in the middle! Oh, you plank. | 0:07:58 | 0:08:01 | |
-'We've got them in the palm of our hands.' -Next! | 0:08:01 | 0:08:04 | |
-Two seconds. I've just got to, er, sneeze. -'We've forgotten something.' | 0:08:05 | 0:08:09 | |
Two seconds. | 0:08:09 | 0:08:11 | |
'Luckily, no-one's noticed.' | 0:08:11 | 0:08:13 | |
-He's just going to wipe his nose. -Go away, go away! | 0:08:13 | 0:08:17 | |
-You sandpaper the ends. -Oh, yes, that's right. | 0:08:17 | 0:08:19 | |
Now what we need are the magnets. These aren't any old magnets. | 0:08:19 | 0:08:22 | |
These are very strong, look, because they've got hold of the screwdriver | 0:08:22 | 0:08:26 | |
and the scissors. | 0:08:26 | 0:08:27 | |
So we're going to put the magnets inside there | 0:08:27 | 0:08:29 | |
and then secure them with a bung on one end | 0:08:29 | 0:08:31 | |
and a bung on the other end, | 0:08:31 | 0:08:33 | |
and then we're going to hook this piece of copper wire | 0:08:33 | 0:08:36 | |
into the back of the battery unit. | 0:08:36 | 0:08:39 | |
Right, here we are. This is the moment of truth. | 0:08:39 | 0:08:41 | |
OK, are we ready? We want a countdown | 0:08:41 | 0:08:44 | |
and we're going to see what happens. | 0:08:44 | 0:08:45 | |
-ALL: -Three, two, one... | 0:08:45 | 0:08:48 | |
He's going to shake it! | 0:08:48 | 0:08:50 | |
-Yeah, look at that! -Impressive. | 0:08:50 | 0:08:52 | |
That's exactly how Faraday put it | 0:08:54 | 0:08:56 | |
when he stood here about 200 years ago. | 0:08:56 | 0:08:58 | |
Thank you. | 0:08:58 | 0:08:59 | |
So this is the point that you get to ask any questions. | 0:09:01 | 0:09:04 | |
WIND BLOWS | 0:09:04 | 0:09:07 | |
Boys, time to go. | 0:09:07 | 0:09:09 | |
And, while we go in search of more of Faraday's genius, | 0:09:11 | 0:09:14 | |
here are some facts you might not know about electricity. | 0:09:14 | 0:09:17 | |
The genius top five. | 0:09:19 | 0:09:21 | |
At five - electric eels produce strong electric shocks | 0:09:21 | 0:09:25 | |
of around 500 volts that they use for hunting and self-defence. | 0:09:25 | 0:09:30 | |
Four - from cloud to Earth, | 0:09:30 | 0:09:32 | |
a lightning strike can be around six miles long. | 0:09:32 | 0:09:36 | |
At three - Simon Cowell runs entirely on batteries. | 0:09:36 | 0:09:39 | |
Only joking, we just made that up! | 0:09:39 | 0:09:42 | |
Ha ha(!) | 0:09:42 | 0:09:43 | |
Two - you can get a static shock from just walking on a carpet. | 0:09:43 | 0:09:47 | |
Charge from the floor goes onto your feet and stores up in your body | 0:09:47 | 0:09:51 | |
until it can escape - often leaving you with a painful shock! Ouch! | 0:09:51 | 0:09:55 | |
And one - electricity can travel at around 186,000 miles a second! | 0:09:57 | 0:10:03 | |
Yep, that's even faster than Usain Bolt! | 0:10:03 | 0:10:06 | |
'Using electricity, | 0:10:09 | 0:10:10 | |
'we're going to perform our own shocking experiment later. | 0:10:10 | 0:10:13 | |
'But first, research.' | 0:10:13 | 0:10:15 | |
Thanks to Faraday's generator, | 0:10:18 | 0:10:19 | |
electricity can be made on a massive scale, | 0:10:19 | 0:10:22 | |
so we can all have it in our homes. | 0:10:22 | 0:10:24 | |
It's transported by miles of cables | 0:10:24 | 0:10:27 | |
connected up with pylons and substations. | 0:10:27 | 0:10:30 | |
The people who look after the network | 0:10:30 | 0:10:32 | |
often have to work with high voltage electricity, | 0:10:32 | 0:10:35 | |
high enough to cause a deadly shock. | 0:10:35 | 0:10:37 | |
That's a lot of volts. We're here at the National Grid. | 0:10:39 | 0:10:42 | |
-If anyone knows about electricity, these people do. -We don't. | 0:10:42 | 0:10:45 | |
It says here, "No entry without authority" | 0:10:45 | 0:10:48 | |
and you are no authority at all. | 0:10:48 | 0:10:50 | |
Luckily, we know a man that is - | 0:10:50 | 0:10:53 | |
genius helper Matt Murphy, | 0:10:53 | 0:10:55 | |
who's worked for the National Grid for 13 years. | 0:10:55 | 0:10:58 | |
-All right? -Yeah. | 0:10:58 | 0:11:00 | |
Now, people see these kind of get-ups all over the countryside. | 0:11:00 | 0:11:03 | |
-You always hear a humming noise of the electricity. -Zzz. -That's good. | 0:11:03 | 0:11:06 | |
-But you can't hear one here. -There's a reason for that. | 0:11:06 | 0:11:08 | |
This is Eakring, which is National Grid's main training centre. | 0:11:08 | 0:11:12 | |
This is a substation but it's not actually live, | 0:11:12 | 0:11:14 | |
-so we can train people safely. -Oh, right. OK. | 0:11:14 | 0:11:17 | |
-Can we go in, then? -Yeah, no problem. | 0:11:17 | 0:11:21 | |
Remember, if you see one of these near your home, don't go in it. | 0:11:21 | 0:11:25 | |
-All right? -Right? | 0:11:25 | 0:11:27 | |
Faraday's discoveries mean | 0:11:30 | 0:11:32 | |
it's possible to have a constant supply of electricity. | 0:11:32 | 0:11:35 | |
And so that we never go without it, | 0:11:36 | 0:11:38 | |
linemen and women carry out essential repairs at scary heights | 0:11:38 | 0:11:43 | |
as Dom is about to demonstrate! | 0:11:43 | 0:11:45 | |
Look at these lads up here. That's what you're going to be doing. | 0:11:46 | 0:11:50 | |
-What are you talking about? I'm not going up there. -You are. | 0:11:50 | 0:11:53 | |
There is no chance... Am I going up there? | 0:11:53 | 0:11:56 | |
-You are. -Is this live, that pylon? | 0:11:56 | 0:11:58 | |
-No, that's not live. -When you see the people going up, | 0:11:58 | 0:12:01 | |
-you can start realising how big it is, don't you? -Yeah, yeah. | 0:12:01 | 0:12:04 | |
You can see they're tiny. | 0:12:04 | 0:12:05 | |
My heart's actually going like the clappers, | 0:12:05 | 0:12:08 | |
just watching those lads up there. | 0:12:08 | 0:12:10 | |
The pylon Dom's working on is a scary 50 metres high. | 0:12:13 | 0:12:18 | |
It's that one there. | 0:12:18 | 0:12:19 | |
This one in front of us? | 0:12:21 | 0:12:23 | |
Is that how high I'm going - right up to that top? | 0:12:27 | 0:12:30 | |
But on the upside, at least the power's switched off. | 0:12:30 | 0:12:33 | |
Electricity is so dangerous, | 0:12:33 | 0:12:35 | |
linemen and women never work on live lines unless they absolutely have to. | 0:12:35 | 0:12:40 | |
All right, Dom, what we need you to do today | 0:12:40 | 0:12:43 | |
is change a step bolt. | 0:12:43 | 0:12:45 | |
Now, a step bolt | 0:12:45 | 0:12:46 | |
is how we climb the tower. | 0:12:46 | 0:12:48 | |
With the assistance of one of our instructors, | 0:12:48 | 0:12:51 | |
I need you to go up there and change that damaged bolt. | 0:12:51 | 0:12:54 | |
How do you feel about that? | 0:12:54 | 0:12:56 | |
-Come on, mate. -Off we go. | 0:12:59 | 0:13:01 | |
Come back, Dom! | 0:13:06 | 0:13:07 | |
And while we drag Dom out of hiding, | 0:13:07 | 0:13:09 | |
here's a shocking tale about the dangers of electricity. | 0:13:09 | 0:13:12 | |
It's the Not So Genius Idea. | 0:13:13 | 0:13:16 | |
American inventor Benjamin Franklin | 0:13:16 | 0:13:19 | |
famously proved lightning is a form of electricity. | 0:13:19 | 0:13:23 | |
But not all of his experiments went to plan. | 0:13:23 | 0:13:26 | |
In 1750, he tried to electrocute a turkey for dinner | 0:13:27 | 0:13:32 | |
to make the meat more tender | 0:13:32 | 0:13:34 | |
but ended up running a massive electrical current | 0:13:34 | 0:13:37 | |
through his own body. | 0:13:37 | 0:13:40 | |
He was lucky to survive! | 0:13:40 | 0:13:41 | |
So there you have it. | 0:13:41 | 0:13:43 | |
A not-so-genius way to make your dinner! | 0:13:43 | 0:13:46 | |
We're not sure who was more shocked - him or the turkey! | 0:13:46 | 0:13:49 | |
-Not going to be unsafe at all, is it? -No, no. | 0:13:54 | 0:13:57 | |
If you lose your footing, this is holding you. | 0:13:57 | 0:13:59 | |
-Look at that size of that karabiner. -Are you being of any help at all? | 0:13:59 | 0:14:02 | |
You're just hanging around like a bad smell. | 0:14:02 | 0:14:05 | |
-I'm just giving you confidence. -You're not giving me anything! | 0:14:05 | 0:14:08 | |
Come on, then, you big... | 0:14:10 | 0:14:14 | |
electrical metally freak! | 0:14:14 | 0:14:17 | |
I'll have you! | 0:14:17 | 0:14:18 | |
I'll sit on you! | 0:14:18 | 0:14:19 | |
There he goes. Go on, lad! | 0:14:22 | 0:14:24 | |
The winds are really picking up the higher I get. | 0:14:25 | 0:14:28 | |
-How's he doing? -He's not doing too bad. -Totally terrified. | 0:14:28 | 0:14:32 | |
Whatever you do, don't look down. | 0:14:33 | 0:14:37 | |
-Right. -How was it? | 0:14:37 | 0:14:39 | |
I lost my confidence halfway up | 0:14:39 | 0:14:42 | |
and then I just stopped for a minute, regrouped and back up again. | 0:14:42 | 0:14:46 | |
Now I'm here, I'm OK. | 0:14:46 | 0:14:48 | |
'Changing a bolt is a fiddly job | 0:14:48 | 0:14:50 | |
'especially when you're 15 metres up a windy pylon.' | 0:14:50 | 0:14:54 | |
So what we're going to do is undo that nut. | 0:14:54 | 0:14:57 | |
You got it? | 0:14:57 | 0:14:58 | |
Whatever you do, don't lose that washer! | 0:14:58 | 0:15:01 | |
Cheers. | 0:15:01 | 0:15:02 | |
'It is vital to keep the National Grid working | 0:15:02 | 0:15:04 | |
'because without electricity, the country would grind to a halt.' | 0:15:04 | 0:15:08 | |
-OK, that's nice and tight. -Yeah, that will do, superb. | 0:15:10 | 0:15:13 | |
-Now we're up here... -Yeah? | 0:15:13 | 0:15:15 | |
-What do you think about going further up? -No problem. | 0:15:15 | 0:15:18 | |
You sure you want to do this? | 0:15:18 | 0:15:20 | |
'Overhead lineworkers must be prepared to work at all heights | 0:15:20 | 0:15:24 | |
-'to carry out repairs.' -Use your legs. | 0:15:24 | 0:15:26 | |
He's only got little legs, poor lad. | 0:15:26 | 0:15:28 | |
The wind is something else. | 0:15:28 | 0:15:31 | |
Don't think about it, think about Faraday. | 0:15:31 | 0:15:33 | |
-Faraday, Faraday. -He's nearly there. | 0:15:33 | 0:15:35 | |
Faraday... | 0:15:35 | 0:15:37 | |
Oh, yeah, I did it! | 0:15:37 | 0:15:39 | |
I wouldn't speak too soon, mate. You've still got to come down again. | 0:15:41 | 0:15:45 | |
Right, then. Now, this is the bit that I'm dreading, actually, | 0:15:45 | 0:15:48 | |
which I think is going to be the difficult bit, | 0:15:48 | 0:15:50 | |
because you can see where you're going on the way up. | 0:15:50 | 0:15:54 | |
On the way down, you can't. | 0:15:54 | 0:15:55 | |
Oh... | 0:15:58 | 0:16:00 | |
He's almost there | 0:16:02 | 0:16:03 | |
when THIS happens. | 0:16:03 | 0:16:05 | |
And THAT's what the safety harness is for! | 0:16:08 | 0:16:10 | |
Keep concentrating. | 0:16:11 | 0:16:13 | |
Dominic Wood, ladies and gentlemen! | 0:16:16 | 0:16:18 | |
Awooga! | 0:16:18 | 0:16:20 | |
You wouldn't catch me up there. | 0:16:20 | 0:16:22 | |
-Put the kettle on. I'm parched. -Well done, mate. Well done. | 0:16:22 | 0:16:26 | |
But sometimes repairs have to be carried out on live lines | 0:16:29 | 0:16:33 | |
carrying dangerous electricity. | 0:16:33 | 0:16:35 | |
That's where Faraday's genius strikes again! | 0:16:35 | 0:16:38 | |
He discovered people can be shielded from its harmful effects | 0:16:40 | 0:16:43 | |
by a metal screen, known as a Faraday cage. | 0:16:43 | 0:16:46 | |
Live line workers wear a type of Faraday cage | 0:16:46 | 0:16:49 | |
as their suit contains metal thread. | 0:16:49 | 0:16:51 | |
CRACKLING | 0:16:54 | 0:16:56 | |
But how does it work? | 0:16:56 | 0:16:58 | |
Let's find out from our very own genius scientist, Fran. | 0:16:58 | 0:17:02 | |
She loves a good experiment to explain how things work. | 0:17:02 | 0:17:05 | |
Step back a bit lower. | 0:17:05 | 0:17:07 | |
'And she's guaranteed to pop up round the corner | 0:17:07 | 0:17:09 | |
'just when you need her most.' | 0:17:09 | 0:17:11 | |
-Ah! -Hello! | 0:17:11 | 0:17:13 | |
Yeah, the linesmen gave us this | 0:17:13 | 0:17:15 | |
because they said if Dom had gone up the pylon when it was live, | 0:17:15 | 0:17:18 | |
-he'd have to wear one of these suits. -It's like a giant babygro, isn't it? | 0:17:18 | 0:17:21 | |
Also known as a Faraday cage. | 0:17:21 | 0:17:23 | |
It's nothing like a cage. What are you talking about? | 0:17:23 | 0:17:26 | |
-It works on the same principles as a Faraday cage. -Explain. | 0:17:26 | 0:17:29 | |
To know how a Faraday cage works, | 0:17:29 | 0:17:31 | |
you guys might need to know a bit more about electricity first. | 0:17:31 | 0:17:34 | |
We do. We were probably taught it at school but to be honest, | 0:17:34 | 0:17:37 | |
-totally forgotten. -It's gone. | 0:17:37 | 0:17:38 | |
All electricity is, is the movement of things that have got charge | 0:17:38 | 0:17:43 | |
and these charges come in two different flavours, or types, | 0:17:43 | 0:17:46 | |
and you can get positive and negative charge. | 0:17:46 | 0:17:49 | |
These positive and negative charges, they can interact | 0:17:49 | 0:17:52 | |
and play with each other, and they can make certain things happen. | 0:17:52 | 0:17:56 | |
-Let me show you. -Experiment time. | 0:17:56 | 0:17:58 | |
Over here, I have a machine | 0:17:58 | 0:18:01 | |
and it's going to make each and every one of these pie dishes | 0:18:01 | 0:18:04 | |
get a negative charge | 0:18:04 | 0:18:05 | |
and if things have the same charge as each other, | 0:18:05 | 0:18:07 | |
than they want to move apart, to move away from each other, | 0:18:07 | 0:18:10 | |
-they want to repel. -Like magnets. -A bit like magnets. | 0:18:10 | 0:18:13 | |
South and north of a magnet goes together, | 0:18:13 | 0:18:15 | |
-but when you have ones of the same, they move apart. -Yep. | 0:18:15 | 0:18:18 | |
-OK, got it. -So if you want to turn the machine on, Dom. | 0:18:18 | 0:18:20 | |
-It's not going to hurt? -No, well... | 0:18:20 | 0:18:22 | |
Because I don't like that, so... | 0:18:22 | 0:18:25 | |
MACHINE HUMS | 0:18:25 | 0:18:27 | |
Oi, oi! Look at that! | 0:18:27 | 0:18:30 | |
They've all got the same charge, so they're moving away | 0:18:30 | 0:18:32 | |
-and repelling each other! -That's brilliant! | 0:18:32 | 0:18:34 | |
So, they all had a negative charge and wanted to move apart, | 0:18:34 | 0:18:38 | |
but when things have a different charge, | 0:18:38 | 0:18:40 | |
they want to move towards each other. | 0:18:40 | 0:18:42 | |
So if we put something with a positive charge | 0:18:42 | 0:18:44 | |
near my negatively charged dome, | 0:18:44 | 0:18:46 | |
the charge would want to move towards it. | 0:18:46 | 0:18:48 | |
-So that's negative. You want something that's positive. -Yes. | 0:18:48 | 0:18:51 | |
He's positive. A positive guinea pig. | 0:18:51 | 0:18:53 | |
So I'd like you to put your finger near the dome. | 0:18:53 | 0:18:55 | |
-Listen, I've just been up a pylon, all right? -You love it. | 0:18:55 | 0:19:00 | |
I'm going to switch this on | 0:19:00 | 0:19:01 | |
and you'll put your finger near the negatively charged dome. | 0:19:01 | 0:19:04 | |
Don't forget, electricity is just the movement of charge | 0:19:04 | 0:19:06 | |
so when we see that charge moving towards your finger | 0:19:06 | 0:19:09 | |
-we might see a little electric spark. -Good, that's nice. | 0:19:09 | 0:19:13 | |
-Your hair won't look any different. -Eh? -So just... -He loves it. | 0:19:13 | 0:19:16 | |
Just pop your finger near it. | 0:19:16 | 0:19:18 | |
I can't! I can hear it crackling! | 0:19:18 | 0:19:20 | |
Come on, you do it! | 0:19:22 | 0:19:24 | |
OK, OK, OK. | 0:19:24 | 0:19:26 | |
So if I hold my finger near it... | 0:19:26 | 0:19:28 | |
-It is quite scary, isn't it? -I can hear it. It's buzzing. | 0:19:28 | 0:19:31 | |
DOME CRACKLES | 0:19:33 | 0:19:34 | |
-A bit closer! -Rubbish! -Bit closer! | 0:19:36 | 0:19:39 | |
Oh, baby! | 0:19:39 | 0:19:40 | |
-DOME CRACKLES -Ah! | 0:19:40 | 0:19:41 | |
'So what Fran's saying is that opposites attract. | 0:19:41 | 0:19:45 | |
'Positive and negative charges are drawn to each other, | 0:19:45 | 0:19:48 | |
'which creates that spark.' | 0:19:48 | 0:19:50 | |
Now, in terms of explaining a Faraday suit, what happens is, | 0:19:56 | 0:19:59 | |
if you apply electricity, which is a charge, | 0:19:59 | 0:20:02 | |
onto the outside of the suit, | 0:20:02 | 0:20:04 | |
all the negative and positive charges in the material of the suit | 0:20:04 | 0:20:07 | |
jiggle around in such a way | 0:20:07 | 0:20:09 | |
that they end up cancelling themselves out on the inside, | 0:20:09 | 0:20:12 | |
so inside the suit, you end up with no charge. | 0:20:12 | 0:20:15 | |
So, the linemen's suit is a Faraday cage | 0:20:16 | 0:20:19 | |
containing positive and negative charges - | 0:20:19 | 0:20:21 | |
positives, which are drawn to the electricity from the power lines | 0:20:21 | 0:20:25 | |
and negatives, which are repelled in the opposite direction. | 0:20:25 | 0:20:28 | |
In all the kerfuffle, they cancel each other out! | 0:20:28 | 0:20:31 | |
The inside of the Faraday cage becomes a charge-free zone! Genius! | 0:20:31 | 0:20:37 | |
So, just to recap, | 0:20:37 | 0:20:38 | |
when you're inside, cos there's no charge, you're fine, you're safe. | 0:20:38 | 0:20:41 | |
On the outside, thousands of volts of electricity. | 0:20:41 | 0:20:45 | |
-Yep, hundreds of thousands of volts. -Hundreds of thousands, even better! | 0:20:45 | 0:20:48 | |
That sounds like the ideal place for you. | 0:20:48 | 0:20:51 | |
'We've learned all about Faraday's amazing discoveries...' | 0:20:54 | 0:20:57 | |
-You're making electricity! -I am! | 0:20:57 | 0:21:00 | |
From generating electricity | 0:21:00 | 0:21:01 | |
to helping protect people doing one of the scariest jobs in the world. | 0:21:01 | 0:21:05 | |
And now we've come up with our own genius idea, | 0:21:07 | 0:21:10 | |
inspired by... | 0:21:10 | 0:21:12 | |
..the Faraday cage! | 0:21:14 | 0:21:16 | |
We've tracked one down in the English county of Gloucestershire. | 0:21:17 | 0:21:21 | |
Gloucestershire? I love Gloucestershire! | 0:21:21 | 0:21:23 | |
Home of cheese rolling, and the Gloucestershire Old Spot pig! | 0:21:23 | 0:21:27 | |
And the UK's leading high voltage special effects company! | 0:21:28 | 0:21:32 | |
So, here's the plan. | 0:21:32 | 0:21:34 | |
Now, we're going to put Faraday's cage to the test | 0:21:34 | 0:21:37 | |
using just under one million volts of electricity. | 0:21:37 | 0:21:40 | |
It's going to be absolutely genius, and I cannot wait. | 0:21:40 | 0:21:44 | |
Our genius idea - | 0:21:49 | 0:21:51 | |
to test Faraday's cage to the limit with a human volunteer - Dick. | 0:21:51 | 0:21:56 | |
Our challenge - to see how well it protects him | 0:21:56 | 0:21:58 | |
from almost a million volts of electricity | 0:21:58 | 0:22:03 | |
Our problem - if Faraday is wrong... | 0:22:03 | 0:22:05 | |
Let's not even go there. | 0:22:06 | 0:22:08 | |
Here it is. The stage for our very own shocking challenge. | 0:22:12 | 0:22:17 | |
We've got a Faraday cage and a lightning machine, | 0:22:18 | 0:22:21 | |
ready to generate some serious high volts of electricity. | 0:22:21 | 0:22:26 | |
Be warned. What we're about to do could blow your mind! | 0:22:26 | 0:22:30 | |
Electricity is dangerous stuff, | 0:22:33 | 0:22:35 | |
so we've brought in a qualified genius helper. | 0:22:35 | 0:22:38 | |
It's Mark Turner, master of high voltage special effects. | 0:22:39 | 0:22:43 | |
-It just looks wrong, really, does not? -It does. | 0:22:43 | 0:22:45 | |
Now, this is the big genius idea. This is the Faraday cage. | 0:22:45 | 0:22:50 | |
But I've got to say, | 0:22:50 | 0:22:52 | |
it looks very different to the lovely, cuddly romper suit | 0:22:52 | 0:22:55 | |
that Fran showed us earlier. It kind of looks like... | 0:22:55 | 0:22:58 | |
-An iron maiden? -An iron maiden. | 0:22:58 | 0:23:00 | |
Somewhere someone would go to die in the mediaeval ages. | 0:23:00 | 0:23:02 | |
Its nickname is the Cage of Death. | 0:23:02 | 0:23:05 | |
-Ha-ha-ha! Cage of Death? -Yeah. | 0:23:05 | 0:23:07 | |
-You might laugh. -Are you all right? | 0:23:07 | 0:23:08 | |
-No, I'm feeling a bit uncomfortable, to be honest. -Genuinely? | 0:23:08 | 0:23:11 | |
This actually looks even more scary. Look at the size of it. | 0:23:11 | 0:23:14 | |
This is the control panel, so we have a safety key, | 0:23:14 | 0:23:18 | |
a number of dials, so we can alter the amount of voltage you receive. | 0:23:18 | 0:23:22 | |
-So what's going to happen? -I'd like to put your friend in there | 0:23:22 | 0:23:25 | |
and then we're going to turn up the power very slowly | 0:23:25 | 0:23:27 | |
to 750,000 volts. | 0:23:27 | 0:23:29 | |
And the lightning you'll see coming at you, | 0:23:29 | 0:23:32 | |
and it'll be dancing around your head, around the suit, | 0:23:32 | 0:23:35 | |
and you'll be able to experience Faraday's principle. | 0:23:35 | 0:23:37 | |
-Would you like to see it working? Would that help? -Yeah. | 0:23:37 | 0:23:40 | |
I wouldn't mind seeing it work before I decide... | 0:23:40 | 0:23:43 | |
-What do you mean "if you decide"? -Before I go in! | 0:23:43 | 0:23:46 | |
'Mark's using a machine called a Tesla Coil | 0:23:47 | 0:23:50 | |
'to generate the electricity.' | 0:23:50 | 0:23:52 | |
ELECTRICITY BUZZES | 0:23:52 | 0:23:55 | |
On the head! | 0:24:19 | 0:24:20 | |
BOTH LAUGH | 0:24:20 | 0:24:22 | |
It was so funny. It's just going towards your head and that's it. | 0:24:22 | 0:24:27 | |
Let me ask some questions. | 0:24:30 | 0:24:33 | |
What does it feel like in there? | 0:24:33 | 0:24:35 | |
-You won't feel anything. -Right. | 0:24:35 | 0:24:37 | |
Is there any documentation in the history of this experiment | 0:24:37 | 0:24:40 | |
that has ever gone wrong? | 0:24:40 | 0:24:41 | |
-One person's died in America two years ago. -Why? What happened? | 0:24:41 | 0:24:46 | |
He put something outside of the suit. | 0:24:46 | 0:24:48 | |
If you're in the suit, you're safe. | 0:24:48 | 0:24:50 | |
-Would you do it? Hmm? -No. | 0:24:50 | 0:24:52 | |
Go on. No, not go on. I didn't mean that. I mean, it's up to you. | 0:24:59 | 0:25:02 | |
-But what...? -It's up to you. | 0:25:02 | 0:25:04 | |
What will I feel like, then, in here? | 0:25:06 | 0:25:08 | |
-You'll feel nothing. -At all? -Nothing at all. | 0:25:08 | 0:25:11 | |
-You'll possibly smell something. -Like what? | 0:25:11 | 0:25:14 | |
Your own trouser juice! | 0:25:14 | 0:25:16 | |
THEY LAUGH | 0:25:16 | 0:25:18 | |
All right, ladies and gentlemen, we give you the Faraday cage. | 0:25:20 | 0:25:26 | |
'I'm putting all my trust in Faraday's genius discovery. | 0:25:27 | 0:25:31 | |
'Faraday, don't let me down!' | 0:25:31 | 0:25:33 | |
'The nickname is the Cage of Death.' | 0:25:33 | 0:25:35 | |
LAUGH ECHOES | 0:25:35 | 0:25:37 | |
Tesla coming on. | 0:25:37 | 0:25:39 | |
ELECTRICITY BUZZES | 0:25:40 | 0:25:42 | |
'It's working! All those positive and negative charges | 0:25:50 | 0:25:53 | |
'rushing around the metal of the cage | 0:25:53 | 0:25:55 | |
'are actually cancelling each other out. | 0:25:55 | 0:25:57 | |
'No nasty shocks for Dick after all!' | 0:25:57 | 0:25:59 | |
-All right? -Yeah. | 0:26:04 | 0:26:06 | |
-Can't feel a thing? -No. It smells really weird. | 0:26:06 | 0:26:09 | |
Do you want it more? | 0:26:09 | 0:26:11 | |
-No. -No? -No more. | 0:26:11 | 0:26:13 | |
I'm shaking! I'm shaking! | 0:26:15 | 0:26:19 | |
I'm not surprised. | 0:26:19 | 0:26:21 | |
You feeling all right? | 0:26:21 | 0:26:22 | |
It's the weirdest feeling ever. | 0:26:22 | 0:26:24 | |
Could you see it out the corner of your eye? | 0:26:24 | 0:26:26 | |
No, cos when it went to the big one, I closed my eyes. | 0:26:26 | 0:26:29 | |
I just couldn't look any more. But the noise is so loud in there. | 0:26:29 | 0:26:31 | |
Could you not feel it hitting the cage? | 0:26:31 | 0:26:34 | |
Oh, yeah, you can feel it this side, it's just shaking around. | 0:26:34 | 0:26:37 | |
Wait till you watch it back. | 0:26:37 | 0:26:39 | |
It was insane, this massive bolt of blue. | 0:26:39 | 0:26:42 | |
The strangest part is the smell. | 0:26:42 | 0:26:44 | |
The smell of copper just gets really strong. | 0:26:44 | 0:26:47 | |
That's not, that's not copper. | 0:26:48 | 0:26:50 | |
THEY LAUGH | 0:26:50 | 0:26:51 | |
Whatever you do, don't look down. | 0:26:52 | 0:26:54 | |
'We've seen Faraday's genius in action - | 0:26:54 | 0:26:57 | |
'from his early discoveries about how to generate electricity' | 0:26:57 | 0:27:01 | |
to his genius protective cage that keeps live line workers safe. | 0:27:01 | 0:27:05 | |
And we've tested Faraday's cage to the limit | 0:27:06 | 0:27:09 | |
with three quarters of a million volts of electricity! | 0:27:09 | 0:27:14 | |
Ten minutes and a cup of tea later, how are you feeling? | 0:27:14 | 0:27:16 | |
Feel OK now. Really pleased I did it, but I can truly say | 0:27:16 | 0:27:19 | |
that's one of the most bizarre experiences I've ever had in my life | 0:27:19 | 0:27:22 | |
but it does prove that Faraday's discoveries were genius. | 0:27:22 | 0:27:25 | |
That's very kind. | 0:27:25 | 0:27:27 | |
Michael Faraday, you are an absolute genius. | 0:27:27 | 0:27:30 | |
Come on, it's late. Hey, turn off the lights, will you? | 0:27:30 | 0:27:33 | |
Not that one! | 0:27:33 | 0:27:34 | |
Bogeys! | 0:27:45 | 0:27:46 | |
It went right through me! | 0:27:53 | 0:27:55 | |
-Don't wobble it! -I'm not doing anything! -Just stand still, then! | 0:27:55 | 0:27:58 | |
Oi, oi! | 0:27:58 | 0:27:59 | |
Subtitles by Red Bee Media Ltd | 0:28:00 | 0:28:03 |