dry settled weather elsewhere. a few scattered showers continue into the far northwest. take care. hello this is bbc news. the headlines: prime minister liz truss and chancellorjeremy hunt will hold talks at chequers, the pm's country house, later as the uk government tries to salvage its economic credibility. the uk chancellorjeremy hunt tells the bbc that nothing is off the table over future tax changes, but says that the government will be �*compassionate�*. china's president xijinping has been defending his controversial zero—covid strategy as a historic communist party congress kicks off in beijing. the iranian authorities say four inmates dead after a fire at a prison in the capital — tehran

is now under control — as protests continue . now on bbc news click celebrates the 100 years anniversary of the bbc by looking at some of the technology pioneered by the bbc, which has transformed the world of broadcast.

today we are literally stepping into history. we are at alexandra palace and this place has seen it all. that's the studio in there. 2022 marks 100 years of the bbc. goodness me. what began with a single radio transmission has transformed into a global broadcaster. in that time, it has covered the biggest events of successive generations, working to inform, educate and entertain the nation. and throughout those hundred years, the bbc has been pushing the boundaries of broadcasting, embracing and sometimes even creating the latest technology. 100 years of broadcasting.

it is amazing when you think of it. you don't look a day over 30. and this studio in alexandra palace has a very special place in bbc history. in 1936 the bbc television service was launched right here on this spot. performers and orchestra would have been here. and a huge camera here! singing. and what viewers saw was this. this is adele dixon performing with the bbc television 0rchestra. she is singing a song called television which was written especially for the opening night of... television. it was broadcast to viewers across london and the home counties through the transmitter on alexandra palace, marking the beginning of what was then referred to as high definition television. yeah, don't laugh. before that, television was just an odd fuzzy experiment to small, selected audiences. and behind—the—scenes there

was a bit of a battle going on. see, the bbc had actually opened up two studios at alexandra palace. this, studio b was a mechanical system which was made byjohn logie baird and it produced an image like this. meanwhile, in studio a, they were trailing an electrical system by emi and what they would do is they would alternate studios and systems on different days so they could compare the results and it turned out that emi's images at 25 frames per second were double the quality of the baird system. it had other advantages too. the baird camera was enormous. that emi one was somewhat more portable. and if you are filming with the baird system you need quite a lot of make up too. well, this is how it was, playmates. black and white, you see? and a bit of blue down each side of the nose. very sexy. the emi system on the other hand could capture a well lit

studio perfectly fine, so the winner really wasn't hard to choose. under the lid of the emitron was this, a cathode—ray tube which is basically an old tv working in reverse, capturing the pictures instead of showing them. it stayed in use without much change for many, many years. the coronation of king george vi was the first time the cameras were used outside and the broadcast was watched by about 50,000 viewers. however, it was the coronation of his daughter that really brought television into our homes. 70 years later, many millions of us watched the queen's funeral on smart tvs, phones, laptops, or on huge screens around the country, demonstrating just how far technology has moved on.

before one of ever is the bbc it colleagues really not many are around these days. as it became tradition at the corporation to empty the insides and plate is leaving presents, but what a thing to have the good news is, at the

bbc, it looks pretty hefty, and it is really big. it tended to let the world travel to it made up for it in the circles it socialised in. it played host to alfred hitchcock, poet ts eliot, author hg wells, and thatis poet ts eliot, author hg wells, and that is a and legend, petula clark, kate career aged nine in front during rehearsal there was the

most enormous air raid, and the producer asked if one of the kids could sing a song or say a piece of poetry. and they put a box so i could it was the microphone was clearly doing something right operationally. ice had been on the ground—breaking it was a little too expensive, so in true bbc form, they made their own, for less than 10% of what rca was charging. type a stayed until 1959.

hold that is a long time when technology was developing their one is called a ribbon microphone. behind the perforated cover is a with the help of one of the bbc engineering manuals, we can see that the sound waves coming either from the sound waves coming either from the front of the back. they hit them ribbon in the middle. it flexes and wiggles when the noise vibrations hit it, just like your eardrum. the flexing moves the ribbon. this generates a small voltage which is unique to the sound it is taking in. to studio equipment that amplifies it to a level you can hear. because the ribbon is a flat piece of metal, it can interpret vibrations from we

can hear it it is the bbc voice who made the first announcement of the d—day landings, and went on to become one of the first bbc television news readers. he recorded with the microphone for this with a bbc ribbon microphone. i'll leave it to you to make your own mind up up on they are called the pips and when you hear them, you will know it is something o'clock. i find them quite soothing. but have you ever wondered why they exist? ships. the pips tell ships what time it is and help them navigate. at the height of the british

empire, britain had a lot more ships than anyone else anywhere in the world and their maps all needed to follow a strict format so they could figure out where they were. the centre of all british nautical charts was the greenwich meridian, 0 degrees, and each vessel also kept a fancy clock on board that told them local time at the meridian and helped them to calculate their position really precisely. but over long journeys, how could the captains keep those clocks accurate to the second? well, to bring in the new year in 1923, the bbc ran an experiment to broadcast the midnight bongs of big ben on the radio. it was a bonging success and the following year the first fully accessible time signal, the greenwich time signal, started to be broadcast every hour and it hasn't stopped since. the pips, as they were known,

were generated by a swinging pendulum fitted with electrical contacts. so now you could have accurate greenwich mean time literally anywhere that you had a radio. the pips have become legendary, a symbol of bbc radio, and who better to tell us about them than another legend of bbc radio, tony blackburn. archive: welcome along - to the tony blackburn show this morning for this tuesday the ninth of december. my thanks, as always tojohn dunn for swinging us up until the seven o'clock hour. the pips have always been a favourite of mine since 1967 when ijoined the bbc and opened up radio 1. archive: good morning everyone, welcome to the exciting new- sound of radio 1. everybody else finds it a bit weird that i like them but i do. i love them. on my programmes, i used to promote them, particularly as my favourite pip is always the last one because it is slightly extended.

full smartwatch as you had an ordinary watch that used to lose a minute a day. i used to set my watch by the pips. with smart watch as you don't but it is still very bbc, and i like it. i wouldn't like to see the original clock still sits in the �*60s, though, an atomic clock started doing thejob which stayed in use until the 1990s, when it transmitted its last pips from the royal 0bservatory. ever since then, the bbc has generated its own pips from its atomic clock buried deep inside broadcasting house which uses gps signals to stay synchronised. so the next time you hear these, you know that they come from this. pips.

with ...witha with a price tag ofjust under with a price tag of “ust under $1500, it with a price tag of “ust under s1soo. it is h with a price tag of “ust under $1500, it is almost _ with a price tag ofjust under $1500, it is almost four - with a price tag ofjust under $1500, it is almost four times i with a price tag ofjust under. $1500, it is almost four times the british artist damien hirst has his pictures to test paintings versus digital works. pictures to test paintings versus digitalworks. buyers pictures to test paintings versus digital works. buyers who bought pieces from his collection were asked to choose the physical artwork or the nft representing it. those who chose the nft is were told their corresponding physical pieces would be destroyed. the corresponding physical pieces would be destroyed-— corresponding physical pieces would be destro ed. , 11:11: be destroyed. the nft is cost £2000, and they have — be destroyed. the nft is cost £2000, and they have the _ be destroyed. the nft is cost £2000, and they have the possibility - be destroyed. the nft is cost £2000, and they have the possibility of- and they have the possibility of being traded in for a physical artwork. these are the ones people

decided not to trade in. {fluid decided not to trade in. could ridin: on decided not to trade in. could riding on roller-coasters - decided not to trade in. could riding on roller-coasters is i decided not to trade in. could riding on roller—coasters is because phones to according to the wall calls were made after brides caused new iphones to react as if they had beenin new iphones to react as if they had been in a crash. apple didn't deny the fault and said the tech would continue to improve. health care company has teamed up with microsoft to make health products more accessible to blind people. the will provide important label information for more than 1500 everyday products, including listen to that. we all love a bit of nature. they offers a unique insight into animal

for programmes like this to run it requires a lot of time, effort and equipment. it is one of the biggest outside broadcasts that the bbc offers. it needs a lot in an effort to be more green and protect the wildlife, springwatch has taken a number of measures to cut we turned up number of measures to cut we turned up to one of their production bases. this is the big one. the the is powered with solar,

you to the only two things that this output is heat and water. it is the newest water it is brand—new. it is absolutely pure. it there is nothing to it, it goes in your mouth this it there is nothing to it, it goes in your mouth— it there is nothing to it, it goes in your mouth this is the site we are working _ in your mouth this is the site we are working on. _ in your mouth this is the site we are working on. it _ in your mouth this is the site we are working on. it is _ in your mouth this is the site we are working on. it is a _ in your mouth this is the site we are working on. it is a huge - in your mouth this is the site we j are working on. it is a huge area in your mouth this is the site we i are working on. it is a huge area to cover. we have been putting fibre across we have put in a fibre once and we leave it we have a site where we can connect to theyr

and we leave it we have a site where we can connect to— we can connect to they also have solar powered — we can connect to they also have solar powered cameras, - we can connect to they also have solar powered cameras, such - we can connect to they also have solar powered cameras, such as| we can connect to they also have i solar powered cameras, such as in there is a sustained effort to lower emissions. a lot of producers now work from home. they don't spend unnecessary fuel coming to sites. for remote sites, they are using solar power there is one more special thing about it uses ai solar power there is one more special thing about it uses al to flag when an animal appears, and tries bloom all the cameras on site have to be monitored. this is have some ai tools that help identify different forms they are accurate. species of birds are it is good at

identifying colours of different shapes and colours. it the green hydrogen generator isn't as cheap as a diesel powered one. new ways of working always require adjustments. the team does what it can to set an example. it the team does what it can to set an examle. .,, �* the team does what it can to set an examle. ., �* , the team does what it can to set an examle. �* , , ., ,, the team does what it can to set an examle. �* , , . ,, , example. it hasn't been seamless but the were example. it hasn't been seamless but they were determined _ example. it hasn't been seamless but they were determined to _ example. it hasn't been seamless but they were determined to taken - they were determined to taken advantage of the using new technology that has been pioneered in science _ technology that has been pioneered in science and bringing it to media, we won't save the reputation of the _ media, we won't save the reputation of the media when it comes to we need _ of the media when it comes to we need entertainment, we need to drama — need entertainment, we need to drama. everyone has to buy into it.

change _ drama. everyone has to buy into it. change is _ drama. everyone has to buy into it. change is never convenient, but the team at springwatch are taking strides forward to help the beeb see reach its goal of net zero by 2030. here is hoping that this is a sign of meanwhile at manchester's science and industry museum, of museum, 100 years of the bbc is being celebrated with an exhibit featuring broadcast artefacts, plus a few more recent additions. this funky looking box was a prototype which was an early part of the bbc�*s research and development project for storing your data yourself, so the idea was that the device would keep track of what you are listening to and watching, but that data was just yours, unless you chose for it not to be. it was inspired by a new vision that sir tim berners—lee has for the web, to rethink the ownership of our data. back in 2018, he told

us about what he calls a mid—course correction for the internet, an idea called solid. imagine a world where before you use an app it says to you, where do you want to store this data? all across the data spectrum, you have complete control over your private and personal data, which is very exciting, an exciting vision, i think for those people who get an inkling of what it's going to be like. right now when we interact with companies over the internet, often without even thinking about it, we give them our data — lots of it. every website, app or streaming platform gathers information on us, our name and age, what we like to share, our files, photos, in fact all of our online browsing habits. platforms use this data to create recommendations, improve algorithms, or sometimes just for the purpose of selling it. but tim berners—lee's idea turns this on its head, giving power back

to the individual. with solid, as users travel across the internet, all their data is stored in something called a pod. this is an individual�*s databank in the cloud which only they, or those they give permission to, can see. so instead of the data freely flowing to companies when they want to access it, they have to ask for the user's permission. if this is approved they can look into the pod to view or add information. with pods, because you are in control, you can share what you have watched or listened to on one platform with the others, something the companies would never want you to be doing, but it means you could get more personalised recommendations. and if you want to stop using a service, you can cut off access to your data. or you could, even more dramatically, delete the pod, destroy all the data, and remove all trace of anything you have ever done on the internet. yes, it is a big endeavour, but it is not a ridiculously huge endeavour.

what is exciting right now is just at the point when we should be broadcasting this, we now have also a start—up, inrupt. four years on, it is a reality with bbc r&d working with inrupt to bring it to life. charlie, you have invited me to a party but it is no ordinary party. no, no, it's not. it is bbc together, it's a watch party, but the particular difference here is your data is being protected in a new way. watch parties allow friends to stream the same content at the same time, and they have exploded in the last few years. something like a third of under 30s actually had a watch party in the last 12 months, and it is really growing. so we have kind of built on the bbc�*s watch party and added the data pod element to it. as users log in, behind—the—scenes the software creates a pod

for each person. here we go. and when you stop watching, this bbc trial shows you what data has been collected. we couldn't do a watch party without storing some data about you. the difference here is we are storing that data away from us, in your pod that you control. solid is just one of many ideas aiming to help us own our data. there is a project in flanders happening at educational qualifications are being put into solid is just one of many ideas aiming to help us own our data. others, even allowing us to sell it, have failed to take

off at scale — maybe the incentives haven't been right. but that could change. bbc r&d and tim berners—lee certainly think it might, and they have both been right before. and there you have it, 100 years of the bbc in 11 minutes. thank you for watching, and hello there. a quiet, settled, sunny sunday shaping up for most of us, but we have had some showers around this morning. this was scotland a few hours ago. you can start to see

the showers opening up. they will weaken and become few and far between. as we go into the afternoon, for many we have blue sky and sunshine. you could already see what day lay ahead across north yorkshire. a great opportunity for getting out and enjoying some of the beautiful autumn colour we have at this time of year. so for the remainder of the day, for many it's all about the blue sky and the sunshine. as you can see quite clearly, a few scattered showers across the northern isles and to the northwest of the great glen. lighter winds in comparison to yesterday as well. now, by the end of the afternoon, the winds will strengthen. we'll start to see some rain pushing in along that dorset coast down towards devon and cornwall. but it's going to take its time in doing so. so enjoy the sunshine and the warmth as well. not too bad in terms of the feel of the weather, particularly across england and wales, 16 to 18

degrees, a little bit fresher further north, 10 to 13 the high. but we're going to see yet more wet weather arriving from this area of low pressure. it's going to push in through the evening and overnight, rattling through it quite a pace, quite a few isobars once again. so we will see some blustery winds, gale force gusts on exposed coast with the heaviest of the rain likely to be through northern ireland and scotland. but that will be sitting to the far north during the early hours of the morning. and you can see quite a mild start with the trailing weather front down into east anglia, essex and kent. first thing that eases during the morning rush hour. a lot of sunshine is expected once again across england and wales, slowly improving through northern ireland and eastern scotland. but we will continue to see plenty of showers on those exposed north and west facing coasts here. so, again, temperatures, similar values, 10 to 13 degrees here, highest values where we've got that sunshine, 17 or 18 celsius. it looks likely that that little ridge of high pressure will stay with us as we move into tuesday. but then low pressure start to threaten out in the atlantic, an indication of what's to come later on in the week. so certainly the beginning of the week will be largely fine, settled and sunny.

but from wednesday onwards, things be get a little bit more unpredictable with some sharp showers and blustery winds.

good afternoon. the new chancellorjeremy hunt has asked conservative mps to get behind the prime minister liz truss. he's insisted that she remains in charge of the government, and said the country needed stability — not another "protracted leadership campaign". mr hunt is holding talks with ms truss today on further changes to the government's tax and spending plans, which led to turmoil on the financial markets. she's faced another blow to her authority with criticism from the us presidentjoe biden. 0ur political correspondent peter saull reports.