Browse content similar to 25/02/2016. Check below for episodes and series from the same categories and more!
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Wow! Hello and welcome to a red hot one show. With Matt Baker. And Alex | :00:22. | :00:31. | |
Jones. Listen, Tim is here because we will explore science of fire | :00:32. | :00:36. | |
breathing later on. First, let's meet tonight's guest, who is more | :00:37. | :00:41. | |
used to burning up the race track and setting fire to world records. | :00:42. | :00:45. | |
Here comes Chris Hoy. On the outside. Who will get it? I think | :00:46. | :00:51. | |
Hoy got it. Will he get it? The answer is, yes - Chris Hoy is the | :00:52. | :00:55. | |
world champion. Hoy takes it. Chris Hoy is the world | :00:56. | :01:01. | |
champion! It is Sir Chris Hoy. Of course it | :01:02. | :01:08. | |
is! How are you? Very well. How are you? Very good. I suppose you have | :01:09. | :01:15. | |
put your bike in the shed, so to speak in professional terms. You | :01:16. | :01:19. | |
have turned to being a children's author. We will hear later. You have | :01:20. | :01:24. | |
signed a lot of books. We wonder if your arms are thicker than your | :01:25. | :01:31. | |
thighs? Not far off it. I have signed 500 books in under 55 minutes | :01:32. | :01:35. | |
it was. Not that I am a competitive person that I will time it or | :01:36. | :01:41. | |
anything! You are not competitive at all, you sports people! The books | :01:42. | :01:46. | |
feature a young boy and his granddad who build a bike together. Tonight, | :01:47. | :01:50. | |
we would like to see something you have worked on with your grandparent | :01:51. | :01:55. | |
on. So, whatever you have worked on, send us a picture with your project | :01:56. | :02:01. | |
and we will show some later on. We are familiar with blood and/or began | :02:02. | :02:08. | |
donations. Stem cell donations have made headlines recently thanks to | :02:09. | :02:13. | |
campaigns. Lucy Siegle has met people whose mixed heritage has | :02:14. | :02:18. | |
faced unique challenges in their fight against cancer. Today I am | :02:19. | :02:28. | |
meeting Lois, his 13-year-old's daughter, Zara is being treated here | :02:29. | :02:33. | |
for cancer. She is in desperate need of a transplant which will help to | :02:34. | :02:38. | |
save her life. Tell me how Zara is doing? She amazes us for a 13 year | :02:39. | :02:46. | |
old. The first time that she was told that she had cancer, she asked, | :02:47. | :02:54. | |
does that mean I am going to die? It is like somebody has taken a bat to | :02:55. | :03:02. | |
your face. What do you say? What did you say? Immediately, my answer was, | :03:03. | :03:10. | |
"No." What is happening with the search at the moment? So, Zara has | :03:11. | :03:17. | |
been referred to London transplant centre and they search all the | :03:18. | :03:23. | |
registries that exist around the world. I am of Arab decent and | :03:24. | :03:36. | |
Karensa my wife is British. Having that mixed heritage causes some | :03:37. | :03:41. | |
difficulty in finding a match. There are eight billion people around the | :03:42. | :03:45. | |
world and there is a tiny amount of them on these registries. | :03:46. | :03:49. | |
Unfortunately, although I would love to meet Zara I cannot because she's | :03:50. | :03:55. | |
in an isolation ward, having gone through another bout of chemo | :03:56. | :04:01. | |
therapy. It is too risky for anyone else to meet her. Joe from Delete | :04:02. | :04:06. | |
Blood Cancer UK has been working closely with Zara and her family to | :04:07. | :04:10. | |
find a match. This is a really, really serious situation. There's no | :04:11. | :04:14. | |
point in sugar-coating this, is there? She needs a donor to survive. | :04:15. | :04:24. | |
We appeal to come forward. You could become Zara's life saver. Why don't | :04:25. | :04:29. | |
more of us become donors? Well the issue seems to be when it comes to | :04:30. | :04:35. | |
stem cell donation we find it a bit scary and invyive. The charity | :04:36. | :04:41. | |
Anthony Nolan has made busting these types of myths a top priority. We | :04:42. | :04:49. | |
have had to dispel the myths so people understand it is a simple | :04:50. | :04:53. | |
process. It is like donating blood. Tell me about a recent success you | :04:54. | :04:59. | |
had. In January we had a young 24 year, Lara, who needed a transplant | :05:00. | :05:04. | |
and her family and friends launched this most inspirational campaign. We | :05:05. | :05:07. | |
have searched globally to find a match. | :05:08. | :05:11. | |
Who did you hear from and where were they? A lot of people in Italy had | :05:12. | :05:18. | |
heard about it and Italy. -- Thailand and to Australia. One story | :05:19. | :05:23. | |
in Thailand who took an eight-hour bus to Bangkok because he heard | :05:24. | :05:26. | |
about the campaign and went to donate. What was it like when you | :05:27. | :05:31. | |
heard that a match had been found? It is hard to put it into words like | :05:32. | :05:37. | |
how grateful I am. And to think that my donor was one in 26 million on | :05:38. | :05:42. | |
the registry just shows that the need of more people to sign up, so | :05:43. | :05:46. | |
that everyone can find that match of theirs. | :05:47. | :05:52. | |
Lara has been given a life-line. For Zara, the wait goes on. | :05:53. | :05:57. | |
How many times a day do you think about a possible donor? Every | :05:58. | :06:02. | |
moment. Every waking moment. Please, please come forward. And the | :06:03. | :06:10. | |
more people we can have on these bone marrow registries, the better. | :06:11. | :06:13. | |
There are people waiting for that gift of life. | :06:14. | :06:19. | |
Good luck to both girls. We wish you all the best. Having watched that I | :06:20. | :06:26. | |
am sure there'll be hundreds out there wanting to help Zara and | :06:27. | :06:28. | |
wanting to know whether they are a match. How do we find out? Is the | :06:29. | :06:34. | |
test pretty straightforward by now? The test is really straightforward. | :06:35. | :06:37. | |
There are three main bodies that will allow you to come forward for | :06:38. | :06:42. | |
stem cell donation. The first is British bone mar row registry, if | :06:43. | :06:47. | |
you live in the UK except for Wales, where it is the Wales bone marrow | :06:48. | :06:54. | |
registry. Then we heard from Delete Blood Cancer and you have to weigh | :06:55. | :07:00. | |
over 55kgs and be healthy. The age varies between the different bodies | :07:01. | :07:04. | |
but because 16-65 you might be considered by one of those. It is | :07:05. | :07:09. | |
easy to do the test. You can register online or register when you | :07:10. | :07:15. | |
go in. You can do a test inside your mouth. Send it off. You will be | :07:16. | :07:18. | |
added to a national registry and they all pool their resources. | :07:19. | :07:22. | |
What's more, they pool them internationally, so you could help | :07:23. | :07:25. | |
somebody from another country or if you ever needed it yourself, they | :07:26. | :07:29. | |
could help you. What is the process then of donating? Is it painful? It | :07:30. | :07:35. | |
used to be considered to be a really big procedure because a bone marrow | :07:36. | :07:40. | |
transplant you would have a general and they would need to take samples | :07:41. | :07:44. | |
from your bone marrow, usually inside your hip. These days 90% of | :07:45. | :07:48. | |
them are done by peripheral stem cell transplant. That does not | :07:49. | :07:54. | |
involve an thetic. You have one needle taking the cells out. They | :07:55. | :07:59. | |
pop them out and pop them back in again. It takes four to five hours. | :08:00. | :08:05. | |
Usually in London and you have four days of hormone beforehand to | :08:06. | :08:08. | |
increase your level of stem cells to make it that bit better. Are there | :08:09. | :08:15. | |
any side effects or risks? Any procedure has risks, but overall | :08:16. | :08:18. | |
this is a safe procedure. You might find you are achy, a little bit of | :08:19. | :08:23. | |
flu-like symptoms, back pine afterwards. Affect you would be | :08:24. | :08:28. | |
fully briefed before you had it. With blood groups so many can help | :08:29. | :08:35. | |
each other - how does it compare to mixed heritage stem cells? You need | :08:36. | :08:39. | |
to match the tissue type and most of the genes. They come from your | :08:40. | :08:45. | |
parents. Your genes are more likely to be very varied. People with | :08:46. | :08:49. | |
different ethnic backgrounds will have different genes. That is why | :08:50. | :08:53. | |
they try to find a family match. About 30% of people get a family | :08:54. | :08:58. | |
match. The rest have to come from those wonderful generous people out | :08:59. | :09:02. | |
there, who put themselves pore r forward address donors. -- | :09:03. | :09:09. | |
themselves forward as donors. We should all help each other. If you | :09:10. | :09:12. | |
want more information head to our website. It is all there for you. | :09:13. | :09:19. | |
Two years ago the Government gave extra funding to help rogue websites | :09:20. | :09:28. | |
shut down companies which charge people for services which should be | :09:29. | :09:33. | |
for free. For two-and-a-half million disabled drivers in the UK a blue | :09:34. | :09:36. | |
badge in the windscreen is their ticket to independence, allowing | :09:37. | :09:41. | |
them to park closer to their destination, including on yellow | :09:42. | :09:45. | |
lines. But now those motorists who apply for their blue badge online | :09:46. | :09:50. | |
are being targeted by a scam. Motorists like 73-year-old bren da | :09:51. | :09:56. | |
Coles from Rochdale. She has a debilitating lung condition, coupled | :09:57. | :10:00. | |
with severe arthritis in both knees. How important is the blue badge to | :10:01. | :10:04. | |
you? It is extremely important. I could not get around without it. | :10:05. | :10:10. | |
It is essential to my day-to-day running. Every three years Brenda | :10:11. | :10:17. | |
has to renew her blue badge. In January she went to this website, | :10:18. | :10:21. | |
she thought it was the official Government site. This looks like the | :10:22. | :10:27. | |
official website. They have got the blue badge symbol on the website. It | :10:28. | :10:31. | |
looks so genuine. I didn't think twice when I did it. I just wanted | :10:32. | :10:37. | |
to get my blue badge. The website is unofficial, yet it | :10:38. | :10:42. | |
pops up at the top of google charges and charges ?49 for what it calls an | :10:43. | :10:51. | |
assistance service. What did Brenda get for her ?49 assistance fee? She | :10:52. | :10:55. | |
got one of these - an application form, something which is completely | :10:56. | :10:58. | |
free on the official Government website. And the official fee for a | :10:59. | :11:03. | |
blue badge, well ?2 in Northern Ireland. ?10 in England. ?20 in | :11:04. | :11:09. | |
Scotland and free in Wales. North gate public services run the | :11:10. | :11:13. | |
scheme on behalf of the Government in England, Wales and Scotland. | :11:14. | :11:18. | |
Services director says bren da is far from alone. We have loads of | :11:19. | :11:23. | |
complaints from people who feel they have been taken in. They paid money | :11:24. | :11:28. | |
in good faith and received nothing. Some live close to the breadline. | :11:29. | :11:37. | |
What can you to clamp down on this? They hide behind sites and it is | :11:38. | :11:42. | |
hard to find out who is behind the schemes. Time to get digging. | :11:43. | :11:47. | |
It turns out, despite being a service for British people, blue | :11:48. | :11:52. | |
badge on line dot organise is registered all the way over here - | :11:53. | :11:56. | |
in Panama. It is a tactic often used by sites | :11:57. | :12:03. | |
to disguise the firm's real base. We discovered this website is also very | :12:04. | :12:10. | |
similar to an old one - parking permit UK.com. That offered help | :12:11. | :12:15. | |
with blue badge applications and all for the bargain price... Of you | :12:16. | :12:21. | |
guessed it... ?49. The website disappeared last year, after | :12:22. | :12:23. | |
complaints from disabled motorists and a public warn from a disability | :12:24. | :12:28. | |
charity. A bit more digging revealed both parking permit and blue badge | :12:29. | :12:32. | |
online sites are linked to one person. They are registered to a man | :12:33. | :12:39. | |
called Ramario Depass - time to hit the road! | :12:40. | :12:44. | |
We contacted him, so far he's not responded. We have tracked him down | :12:45. | :12:50. | |
to addresses in Essex. First up, his home address. He's not | :12:51. | :12:58. | |
in. Does Ramario Depass live here? He's my son. Do you know where he | :12:59. | :13:04. | |
is? I don't know where he is. A lot of people have complained he's | :13:05. | :13:08. | |
ripped off disabled people - providing nothing for ?50 fees for a | :13:09. | :13:12. | |
service that disabled people can get for free. I don't know what you are | :13:13. | :13:16. | |
talking about. No joy there. I do have a mobile number for him. I am | :13:17. | :13:21. | |
sorry, but the person you have called is not available. I cannot | :13:22. | :13:28. | |
say I am surprised. For a man who supposedly helps disabled people, | :13:29. | :13:32. | |
he's not keen talking about it. We have one last port of call. An | :13:33. | :13:38. | |
office in Brentwood, where he has his post delivered. Seeing how he | :13:39. | :13:43. | |
likes his blue badges so much, we have made him one of his own. Unlike | :13:44. | :13:47. | |
his service, have made him one of his own. Unlike | :13:48. | :13:55. | |
it? Do you want me to put have made him one of his own. Unlike | :13:56. | :14:02. | |
from? He'll know who we are. Brenda was left ?49 worse off for the | :14:03. | :14:07. | |
copycat site, still had to pay ?10 to get her blue badge. He's a low | :14:08. | :14:13. | |
life, conning people out of money. He should be closed down. | :14:14. | :14:19. | |
Thank you, Dan. The good news is that since we alerted them to of | :14:20. | :14:24. | |
these activities Google have taken down his site and we have passed on | :14:25. | :14:30. | |
our findings to the investigators in the Trading Standards E crime unit. | :14:31. | :14:34. | |
It should be the end. If you are watching get in contact and let us | :14:35. | :14:38. | |
know you got that post. Anyway, Chris you have turned attentions to | :14:39. | :14:45. | |
writing. Where did all this come from? Has it been a passion for a | :14:46. | :14:49. | |
while? Well, I never thought I would get the chance to do it. Since I | :14:50. | :14:53. | |
have retired from cycling I have tried to encourage kids to take up | :14:54. | :14:57. | |
cycling through different ways, with my bike brand I have supported a Go | :14:58. | :15:05. | |
Ride, to get two million kids the opportunity to ride bikes between | :15:06. | :15:08. | |
now and 2020. This was an idea we came up with and hopefully to | :15:09. | :15:12. | |
inspire them to read and cycle their bikes. You enjoyed the process, you | :15:13. | :15:17. | |
said the great thing is there's no rules to it. How much input did you | :15:18. | :15:22. | |
have to the plot? The whole thing really. I sat down with Joanna | :15:23. | :15:27. | |
Nadin, a successful children's author. We hit it off and we | :15:28. | :15:31. | |
brain-stormed about the different ideas we could have. We talked about | :15:32. | :15:35. | |
my childhood, my inspirations when I was a kid, my cycling career, the | :15:36. | :15:41. | |
things I saw and did. It was a long process, basically of coming one | :15:42. | :15:43. | |
different points and ideas. There will be five books in | :15:44. | :15:55. | |
The first one, the best birthday bike, is about Fergus receiving this | :15:56. | :15:59. | |
bike for his birthday. He is hoping for a Sullivan Swift, which is | :16:00. | :16:02. | |
all singing, all dancing, expensive all singing, all dancing, expensive | :16:03. | :16:06. | |
new bike, and he is a bit disappointed to get his dad's | :16:07. | :16:07. | |
second-hand disappointed to get his dad's | :16:08. | :16:19. | |
it ready for you. And this is about him discovering something special | :16:20. | :16:23. | |
when he rides it. That mirrors your story, because the first time you | :16:24. | :16:27. | |
came on the One Show, you showed us this picture of a bike you got from | :16:28. | :16:31. | |
a car-boot sale. It was a jumble sale. My parents bought it for ?5. | :16:32. | :16:36. | |
That was where the inspiration came from. I loved it, it was fantastic. | :16:37. | :16:41. | |
At that age, your first bike is amazing. And have you drawn on | :16:42. | :16:45. | |
people you know as inspiration for the other characters? That is the | :16:46. | :16:50. | |
beauty of it, you can pick and choose. I feel bad, because I have | :16:51. | :17:00. | |
named names. I will say one of the characters - Bradley Wiggins | :17:01. | :17:04. | |
inspired me. But it is not the whole character, it is his riding style. | :17:05. | :17:08. | |
When I first saw Bradley Wiggins when he was a teenager, gangly, with | :17:09. | :17:17. | |
long limbs, and no sideburns at that point. He looks like he might have | :17:18. | :17:23. | |
been born with them. He was a classic teenager, a bit awkward at | :17:24. | :17:27. | |
that stage. And then he got on a bike and it was like poetry in | :17:28. | :17:31. | |
motion. He had this fluid pedalling style, and you could just tell he | :17:32. | :17:35. | |
was built to ride a bike. Soy-based one of the characters on that -- so | :17:36. | :17:40. | |
I based one of the characters on him. And you have dedicated this to | :17:41. | :17:46. | |
your son, Callum. We have a lovely photo, like father, like son. You | :17:47. | :17:54. | |
even have the same body position. He is about two now? He is 16 months | :17:55. | :17:59. | |
now, and he has just started walking. He is so much fun. I look | :18:00. | :18:02. | |
forward to when he is old enough that I can read the books to him. | :18:03. | :18:09. | |
You are still looking incredibly fit, Chris. Thank you very much! It | :18:10. | :18:15. | |
is remarkable. You are still obviously training hard. I ride my | :18:16. | :18:19. | |
bike every day. I love cycling. There are days when I am travelling, | :18:20. | :18:23. | |
but I try and do something every day, and you feel better for doing | :18:24. | :18:28. | |
it. Technically, I am working, but really I am just out riding a bike. | :18:29. | :18:33. | |
We have to talk about Rio, because it is coming quickly. This will be | :18:34. | :18:37. | |
the first one where you are not part of Team GB since Sydney in 2000. How | :18:38. | :18:43. | |
will it be watching the team compete and not being part of the team? It | :18:44. | :18:48. | |
will be tough. I went to the combo of games in Glasgow and was the | :18:49. | :18:51. | |
first big championship I went to where I was not part of the | :18:52. | :18:55. | |
competition -- I went to the Commonwealth Games in Glasgow. It is | :18:56. | :18:59. | |
fun because you get to soak up the atmosphere and enjoy it, whereas | :19:00. | :19:03. | |
when you are competing, you are focused and single-mindedly thinking | :19:04. | :19:06. | |
about yourself and your competition. But when the race starts, there will | :19:07. | :19:12. | |
always be the feeling of wishing I was out there. I don't think I will | :19:13. | :19:16. | |
go away. When I am in my 70s and 80s, I will remember the experiences | :19:17. | :19:20. | |
and at times you had when you raced. More than that, I missed the | :19:21. | :19:23. | |
day-to-day being at the track centre with the team and training on a | :19:24. | :19:28. | |
daily basis. That is why I keep coming back to the velodrome, seeing | :19:29. | :19:36. | |
the guys, hanging around. It must be invaluable, with the experience you | :19:37. | :19:39. | |
have got. I still speak to the team regularly. I suppose I am a bit of a | :19:40. | :19:44. | |
sounding board for them. I am not a selector or a coach. They can come | :19:45. | :19:48. | |
to me and say, training is not going well, or it is going well, or | :19:49. | :19:53. | |
whatever Tom and I can give them advice or say well done, or just | :19:54. | :19:57. | |
chat about something else. Going back to the books, Flying Fergus is | :19:58. | :20:05. | |
out today. You know what, I am really cold. Look at the hairs on my | :20:06. | :20:11. | |
arms. Let's turn the heat up with some flaming good fire breathing. | :20:12. | :20:16. | |
Here is Marty. Fire performance is thought to date | :20:17. | :20:22. | |
back to Persia, more than 2000 years ago. Today, we are still fascinated | :20:23. | :20:28. | |
by fire. But it goes without saying that you shouldn't try this at home. | :20:29. | :20:33. | |
Fire and eating are impressive skills that take years to master. | :20:34. | :20:39. | |
But how do these performers do it when they are quite literally | :20:40. | :20:44. | |
playing with fire? For that, they need to really understand the | :20:45. | :20:49. | |
science of combustion. Fire is a chemical reaction between oxygen, a | :20:50. | :20:57. | |
fuel that is usually started with heat energy. And far performers use | :20:58. | :21:01. | |
their understanding of these three crucial elements to manipulate their | :21:02. | :21:09. | |
flame. -- fire performers. Dr Tim Cockerill, a fire breathing | :21:10. | :21:12. | |
scientist, is going to reveal some red-hot tricks of the trade. The | :21:13. | :21:18. | |
only secret to eating fire is following the rules of physics. So | :21:19. | :21:23. | |
there is our flame. Other top, it very hot. But down here towards the | :21:24. | :21:30. | |
bottom, it is a lot cooler colour so we always did our head right back so | :21:31. | :21:33. | |
that the heat is going away from our face. Never breathed in. If you did, | :21:34. | :21:41. | |
you would explode your lungs. Air is a poor conductor of heat, said Tim | :21:42. | :21:45. | |
has a few seconds to hold the base of the flame in his mouth before it | :21:46. | :21:52. | |
can burn him. He closes his lips around it, starving of vital oxygen | :21:53. | :21:57. | |
and extinguishing the flame. But I want to know the secrets of the most | :21:58. | :22:02. | |
impressive and dangerous stunt in the fire breather's repertoire. The | :22:03. | :22:09. | |
human volcano. The real key to its success is in understanding the | :22:10. | :22:13. | |
chemistry of your fuel, and disability to mix with the oxygen in | :22:14. | :22:17. | |
the air. Different fuels have different volatility is, so this | :22:18. | :22:23. | |
fuel, for example, is not very volatile, so it is not evaporating | :22:24. | :22:27. | |
much. So there is not much of a per mixing with the oxygen. So if I take | :22:28. | :22:34. | |
a match and throw it in, it just goes out. It doesn't like the fuel. | :22:35. | :22:39. | |
Whereas this fuel is a very volatile fuel, so there is a lot of | :22:40. | :22:44. | |
evaporation and a lot of vapour mixing with oxygen. So if I take a | :22:45. | :22:49. | |
match and do the same thing... It ignites straightaway. Tim needs to | :22:50. | :22:55. | |
create a huge fireball that erupts from his mouth. But surprisingly, | :22:56. | :23:02. | |
it's not a highly volatile fuel that he uses. If you were to use a | :23:03. | :23:07. | |
volatile fuel like alcohol, there would be a danger that the flame you | :23:08. | :23:10. | |
produce could jump back to your mouth and set the rest of the fuel | :23:11. | :23:14. | |
in your mouth on fire, which is a bad idea. So we use a tiny amount, a | :23:15. | :23:19. | |
teaspoon of low volatile fuel, but we mix it efficiently with the air. | :23:20. | :23:24. | |
The secret to this is all in the art of spitting. You practise firstly | :23:25. | :23:34. | |
with water. You split the water into a vapour. It is how all fire | :23:35. | :23:39. | |
breather is start off. All the fuel has dribbled down your face. You | :23:40. | :23:43. | |
were also leaning over the flame, so that would have gone straight onto | :23:44. | :23:47. | |
your moustache and your hair. I had better leave this highly dangerous | :23:48. | :23:52. | |
stunt to the professional. Tim sprays the fine fuel missed over the | :23:53. | :23:57. | |
torch. The finer the spray, the greater the surface area of the fuel | :23:58. | :24:01. | |
droplets that are available for the oxygen to react to it. He stays | :24:02. | :24:06. | |
below the flame, while also thrusting forward, creating a huge | :24:07. | :24:11. | |
travelling ball of fire. Having learnt the scientific tricks of the | :24:12. | :24:15. | |
fire breathing trade, I am, if anything, even more impressed by | :24:16. | :24:20. | |
their skills and by the flame that they manipulate. | :24:21. | :24:25. | |
Now, Tim is here from that film, because we are going to do some more | :24:26. | :24:30. | |
fire experiments. I'm going to gently say, be careful when try this | :24:31. | :24:34. | |
at home, because you will want to try it. It is unbelievable. We have | :24:35. | :24:40. | |
all household stuff here, candles and glasses and water. We are going | :24:41. | :24:44. | |
to show you a few experiments using fire, but on a smaller scale than | :24:45. | :24:49. | |
fire eating. This one is called the seesaw candle. This might take a | :24:50. | :24:53. | |
minute to get going. So just a normal candle, two pint glasses and | :24:54. | :24:59. | |
a nail through the middle. We will come back to that. It will get more | :25:00. | :25:04. | |
impressive. It looks beautiful for a dinner party as it is. We have to | :25:05. | :25:15. | |
show you Dave, are very fit far man. If anything happens, you are in safe | :25:16. | :25:19. | |
hands. -- our fit Fahrmann. Twitter is going to be more light tonight | :25:20. | :25:25. | |
than it was last night. He has a hen do to go to have to woods. | :25:26. | :25:32. | |
Congratulations to Dave, new grandchild born today. So, the thing | :25:33. | :25:40. | |
about fire is that things do not burn when they are solid. Things | :25:41. | :25:44. | |
have to vaporise or turn into a gas before they burn. So watch this, we | :25:45. | :25:48. | |
blow out the candle, and the flame jumps from the top right down. We | :25:49. | :25:58. | |
have a slow-mo of this as well. So you are literally just relighting | :25:59. | :26:03. | |
the smoke? That's right. In fact, the smoke is vaporised candle wax. | :26:04. | :26:09. | |
So that stream is vaporised candle wax, so you just bring the flame | :26:10. | :26:13. | |
close to it. That is a good magic trick. Wow. The seesaw is in full | :26:14. | :26:31. | |
flow now. This is a property of fire that we use in fire eating. The heat | :26:32. | :26:36. | |
always goes upwards, so the top of the flame is the Hobbit and | :26:37. | :26:40. | |
underneath, it is quite cool. So when we liked this, as the candle | :26:41. | :26:43. | |
tips over, there is lots of the candle above the flame, so that | :26:44. | :26:47. | |
burns and melts quickly and it all drips off. When that happens, the | :26:48. | :26:51. | |
other side is heavier, so it tips over and the same thing happens on | :26:52. | :26:55. | |
the other side. Sometimes it rolls all the way over when it gets going. | :26:56. | :26:59. | |
And it will keep going until the candle runs out. Now, this last one | :27:00. | :27:06. | |
shows two properties of fire. This is just a bit of water with a bit of | :27:07. | :27:13. | |
colouring so that we can see, candle and a glass. The important for a | :27:14. | :27:17. | |
flame are oxygen and a fuel. That is what fire is, a chemical reaction | :27:18. | :27:22. | |
with those two combining. So when we put the glass over the top deck | :27:23. | :27:26. | |
this, there is only a certain amount of oxygen inside and that is getting | :27:27. | :27:30. | |
used up. So you watch the flames start to die down and then goes out. | :27:31. | :27:34. | |
So it has used up the oxygen and that has filled with warm air and as | :27:35. | :27:40. | |
the warm air cools down, it contracts and sucks up the water. | :27:41. | :27:46. | |
Simple, but effective. That was amazing, thank you so much. I think | :27:47. | :27:53. | |
Dave should come home with me,, because I want to try all of these. | :27:54. | :27:59. | |
Just for the fire. Earlier, we asked for stuff you have been making with | :28:00. | :28:03. | |
your grandparents today or in the past week. We have some lovely | :28:04. | :28:07. | |
pictures. Robert made this goblin with his granny today. There is | :28:08. | :28:15. | |
Bradley Wiggins. This is Paul, with grandad Burton, who in 1961 built | :28:16. | :28:20. | |
this lambert a scooter together. This has come in from Liz, from | :28:21. | :28:27. | |
Wimbledon. That is a nice picture from 1960. Any time for any more? | :28:28. | :28:36. | |
This is grandad Ian and Ethan on fixing the light switch in | :28:37. | :28:43. | |
Ashton-under-Lyne. That is all for this evening. A big thank you to | :28:44. | :28:47. | |
Chris for your company. All the best with the books. The first two books | :28:48. | :28:51. | |
in the flying for this series were released today. Tomorrow, we are | :28:52. | :28:55. | |
joined by Rob Brydon and another sir, Sir Kenneth Branagh. See you | :28:56. | :28:57. | |
then. And Dermot is here. Bye. | :28:58. | :29:02. |