Latest news with #worldrecord
The Verge
2 hours ago
- Science
- The Verge
How college students built the fastest Rubik's Cube-solving robot yet
A team of Purdue University students recently set a new Guinness World Record with their custom robot that solved a Rubik's Cube in just 0.103 seconds. That was about a third of the time it took the previous record-setting bot. But the new record wasn't achieved by simply building a robot that moves faster. The students used a combination of high-speed but low-res camera systems, a cube customized for improved strength, and a special solving technique popular among human speed cubers. The Rubik's Cube-solving robot arms race kicked off in 2014, when a robot called Cubestormer 3 built with Lego Mindstorms parts and a Samsung Galaxy S4 solved the iconic puzzle in 3.253 seconds — faster than any human or robot could at the time. (The current world record for a human solving a Rubik's Cube belongs to Xuanyi Geng, who did it in just 3.05 seconds.) Over the course of a decade, engineers managed to reduce that record to just hundreds of milliseconds. Last May, engineers at Mitsubishi Electric in Japan claimed the world record with a robot that solved a cube in 0.305 seconds. The record stood for almost a year before the team from Purdue's Elmore Family School of Electrical and Computer Engineering — Junpei Ota, Aden Hurd, Matthew Patrohay, and Alex Berta — shattered it. Their robot has come to be known as Purdubik's Cube. Bringing the robot record down to less than half a second required moving away from Lego and, instead, using optimized components like industrial motors. Getting it down to just 0.103 seconds, however, required the team from Purdue to find multiple new ways to shave off milliseconds. 'Each robot that previous world record-holders has done has kind of focused on one new thing,' Patrohay tells The Verge. When MIT grad students broke the record in 2018, they opted for industrial hardware that outperformed what previous record-holders had used. Mitsubishi Electric chose electric motors that were better suited for the specific task of spinning each side of the cube, instead of just hardware that moved faster. However, the first thing the Purdue students improved was actually the speed that their robot could visualize the scrambled cube. Human speed cubing competitors are allowed to study a Rubik's Cube before their timer starts, but the robot record includes the time it takes it to determine the location of all the colored squares. The students used a pair of high-speed machine vision cameras from Flir, with a resolution of just 720x540 pixels, pointed at opposing corners of the cube. Each camera can see three sides simultaneously during exposures that lasted as little as 10 microseconds. Although it may seem instantaneous, it takes time for a camera to process the data coming from a sensor and turn it into a digital picture. The Purdubik's Cube uses a custom image detection system that skips image processing altogether. It also only focuses on a very small area of what each camera's sensor sees — a cropped region that's just 128x124 pixels in size — to reduce the amount of data being moved around. Raw data from the sensors is sent straight to a high-speed color detection system that uses the RGB measurements from even smaller sample areas on each square to determine their color faster than other approaches — even AI. 'It's sometimes slightly less reliable,' Patrohay admits, 'but even if it's 90 percent consistent, that's good enough as long as it's fast. We really want that speed.' Despite a lot of the hardware on Purdue's robot being custom-made, the team chose to go with existing software when it came to figuring out the fastest way to solve a scrambled cube. They used Elias Frantar's Rob-Twophase, which is a cube-solving algorithm that takes into account the unique capabilities of robots, like being able to spin two sides of a cube simultaneously. The team also took advantage of a Rubik's Cube-solving technique called corner cutting where you can start to turn one side of the cube before you've finished turning another side that's perpendicular to it. The advantage to this technique is that you're not waiting for one side to completely finish its rotation before starting another. For a brief moment, there's overlap between the movements of the two sides that can result in a significant amount of time saved when you're chasing a world record. The challenge with corner cutting is that if you use too much force (like a robot is capable of) and don't time things perfectly, you can physically break or even completely destroy a Rubik's Cube. In addition to perfecting the timing of the robot's movements and the acceleration of its motors, the students had to customize the cube itself. Guinness World Records follows the guidelines of the World Cube Association, which has a long list of regulations that need to be followed before a record will be recognized. It allows competitors to modify their cube, so long as it twists and turns like a standard Rubik's Cube and has nine colored squares on each of its six sides, with each side a different color. Materials other than plastic can be used, but the color parts all need to have the same texture. To improve its durability, the Purdue team upgraded the internal structure of their cubes with a custom 3D-printed version made from stronger SLS nylon plastic. The WCA also allows the use of lubricants to help make cubes spin more freely, but here it's used for a different reason. 'The cube we use for the record is tensioned incredibly tight, like almost hilariously tight,' says Patrohay. 'The one that we modified is very difficult to turn. Not impossible, but you can't turn it with your fingers. You have to really get your wrist into it.' When solving the cube at high speeds, the lubricant helps to smooth out its movements while the increased tension reduces overturns and improves control so time-saving tricks like corner cutting can be used. Faster servo motors do help to reduce solving times, but it's not as simple as maxing out their speed and hoping for the best. The Purdubik's Cube uses six motors attached to metal shafts that slot into the center of each side of the cube. After testing several different approaches the team settled on a trapezoidal motion profile where the servos accelerate at speeds of up to 12,000,000 degrees/s2, but decelerate much slower, closer to 3,000,000 degrees/s2, so the robot can more accurately position each side as it comes to a stop. Could the Purdubik's Cube break the record again? Patrohay believes it's possible, but it would need a stronger cube made out of something other than plastic. 'If you were to make a completely application-specific Rubik's Cube out of some sort of carbon fiber composite, then I could imagine you being able to survive at higher speeds, and just being able to survive at higher speeds would then allow you to bring the time down.'
Yahoo
a day ago
- General
- Yahoo
Pritchard wins Euros gold with another world record
Benjamin Pritchard's gold medal at the 2024 Paralympics was his first in a major international event [Getty Images] Great Britain's Benjamin Pritchard set a world record for the second time in three days as he became European champion on Saturday. The Paralympic champion broke the record in the PR1 men's single sculls on day one of the European Rowing Championships. Advertisement Pritchard posted a time of eight minutes 47.88 seconds to book his place in the final in Plovdiv, Bulgaria. The 33-year-old Welshman then topped that two days later, winning in a time of 8:40.38 to claim his first European title. That was enough to beat the previous world-record holder, Ukraine's Roman Polianskyi, who was second in 8:51.93, while Italy's Giacomo Perini was third (8:55.96). Samuel Murray and Annabel Caddick then finished second in the PR3 mixed double sculls final. The British pair finished in 7:03.54, while Germany's Valentin Luz and Kathrin Marchand won it in 6:57.41. Advertisement GB's Eleanor Brinkhoff and Megan Slabbert also claimed a podium finish in the women's pair final. They were third in 6:55.47, with the Romanian pair of Maria Magdalena Rusu and Simona Radis (6:49.18) winning ahead of Laura Meriano and Alice Codato from Italy (6:52.64).
Yahoo
a day ago
- Health
- Yahoo
‘Never think you're too old': Meet the world's fastest 75-year-old woman
Along a sun-dappled canal towpath in picturesque Hertfordshire countryside, a grey-brown bob rises and falls with the effortless bounce of a lithe, spectacled figure gliding her way past dog-walkers and afternoon ramblers. There is a watch – one of those smart-technology devices capable of producing all sorts of unnecessary metrics – on Sarah Roberts's wrist, but she has forgotten to switch it on. Roberts, a grandmother of five, tends not to take note of such things. Advertisement When she does go for a run – an occurrence of surprising infrequency – she prefers to be guided by feel; distances and times forgotten upon return to her front door. The fastest 75-year-old woman in history – a multiple world champion and world-record holder – possesses no training logbook, no coach and, most intriguingly, almost zero running pedigree for most of her life. Asked by the hastily stretching Guardian journalist – foolishly attempting to keep pace for a few miles – how she is capable of launching straight into a run without any semblance of a warm-up, she reveals she only stretches before races 'so that I don't look unprofessional'. Her Great Britain Masters singlet reveals taut muscles and supple limbs that would never have been employed for their current purpose were it not for a holiday to South Africa eight years ago. Trips there had been a frequent occurrence long before a Cape Town-based friend asked whether Roberts and her husband George would like to join their regular Saturday morning parkrun – the wonderful innovation that welcomes all comers to undertake 5km at whatever pace they choose. Sheltered under trees at the foot of Table Mountain, they savoured this one at no more than a pleasurable amble. The following week they went again, only this time Roberts ran small segments. On their return to their Hertfordshire home, the couple decided to sign up to their local parkrun. For three years, almost every Saturday morning involved a 5km run, with Roberts converting from running novice to regular attendee, whittling her time down from just shy of 30 minutes to less than 23. Just a few weeks off her 70th birthday, she then took a plunge by joining her local athletics club, Dacorum, and signing up for an 800m race at the end of the summer. Advertisement 'I was discovering I was really quite good,' she explains after our canal run, while sitting in front of an antique mantel clock in a living room adorned with furnishings from decades gone by. 'That made me think I ought to see whether I could do other things, so I put myself in for an 800. I'd never even been on a track before. The gun went and all I knew is I had to go round twice. 'The only other people in the race were either under-17 or under-15, and then there was me, almost 70. These girls just shot off in the distance looking like gazelles and I ran round. I was way last and didn't know what time I'd done, but someone told me it was rather good for my age.' The Covid pandemic dashed almost all running opportunities over the next two years, aside from irregular parkruns when permitted. So, it was not until early 2022 that she was able to contest another 800m, unexpectedly taking the scalp of a multiple global age-group champion in the process. 'Nobody had heard of me or expected me to do anything,' says Roberts. Advertisement By 2023, she was a double British champion in the 70-74 age group. The following year she won three world titles over 800m, 1500m and 5,000m, before adding four more indoor golds this March. 800m outdoor: 2min 58.12sec 800m indoor: 2.57.32 1,500m outdoor: 6.06.20 1,500m indoor: 5.58.15 Mile outdoor: 6.40.32 3,000m indoor: 12.28.82 5,000m outdoor: 22.40.15 5km road: 21.33 10,000m outdoor: 45.59.81 10km road: 44.33 Since her birthday last October, she has swept the board of 75+ world records over every track distance from 800m to 10,000m indoors and outdoors, as well as 5km and 10km on the road. Last weekend, she added mile and 10,000m world records to her bulging haul despite less than 90 minutes between races. It is a staggering array of accolades for someone whose running experience never previously extended beyond chasing primary school friends around the playground. Upstairs in their smart detached home, off a hallway lined with photos of their children and grandchildren, sits a room that used to function as an office but is now primarily occupied with Roberts' late-blooming running career. Surrounded by cardboard boxes marked with such mundanities as 'sewing', 'Scrabble' and 'wrapping paper' lie an assortment of athletics paraphernalia, from certificates to printed race results, and photo albums to a frankly overwhelming number of medals. Advertisement How much does running now occupy Roberts' life, I wonder? 'Only 95%,' says George, joking, who happily travels around the country and abroad to watch his wife of almost 54 years race. By this point, there is an obvious question that needs answering. How on earth does a woman who had never run until she was 67 become the fastest of all time? Despite not taking part in any organised sport beyond the briefest of social netball stints many decades ago, Roberts has always been a keen gym goer. Initially just the odd circuit class here and there during her days working as a solicitor and raising two children; latterly, post-retirement, every day and all conceivable options, from boxing to Zumba, and yoga to legs, bums and tums. A few years ago, when her gym held a contest to see who could hold the longest plank, Roberts, then just shy of her 70th birthday, tapped out victorious after 10 minutes and 15 seconds. Only boredom, and a lack of genuine challengers, made her stop. Advertisement Recently, while hoovering up world titles in Florida, she was approached by researchers who asked to conduct some tests on her. They found her resting heart rate drops as low as 38 beats per minute and her VO2 max, which measures the body's ability to use oxygen during exercise, is 54 – both comparable to an elite athlete generations younger. She awaits full MRI results, but the radiographer who conducted the scans was instantly stunned by the lack of fat running through her legs. 'I feel fitter than I've ever felt before, which is fantastic,' she says. 'You don't expect to feel that when you're 75.' Her formal running training remains minimal. Other than a track session on Mondays and intervals on Tuesdays, her only other regular outing is the trusty Saturday morning parkrun. The remainder of her fitness is cultivated through those daily gym visits. Remarkably, given her advancing years, she is only getting quicker, so far improving her best times every summer since starting to compete. 'Whatever I'm doing seems to be working,' she says, smiling. Having braved that initial 800m race at an age when most would never consider it, she hopes her story may inspire others. What unknown talents lie dormant, just waiting for a chance to emerge? Advertisement 'I'd like people to think that they should always try something,' she says. 'You never know what you can do until you try it. Never think you're too old. Give it a go. You will surprise yourself at what you can do if you really try to do something.' Earlier, as we left the towpath and wound our way through the village towards home – one of us sweating considerably more than the other twice his age – two scenarios sprang to mind. One was the thought of what she might achieve with the aid of a properly conceived full-time running regime – a suggestion that Roberts gives short shrift, fully content as she is, with sufficient honours to validate her current approach. The other was what might have been. Given her apparent physiological advantages – and notwithstanding the paucity of middle and long-distance events open to women until the latter decades of the 20th century – does she wonder what she could have accomplished if made aware of her running prowess at a younger age? 'No, I don't,' she says. 'I'm just very grateful that I've discovered it now. I've had a good life and enjoyed whatever I've done in the past. I don't go into what-ifs because all the other factors would have been different anyway. But I'm very happy for the current situation. 'I'm just amazed really. I could always run for a bus, but I never thought I would ever be anywhere near the best in the world. It never would have crossed my mind.'
The Guardian
a day ago
- Health
- The Guardian
‘Never think you're too old': Meet the world's fastest 75-year-old woman
Along a sun-dappled canal towpath in picturesque Hertfordshire countryside, a grey-brown bob rises and falls with the effortless bounce of a lithe, spectacled figure gliding her way past dog-walkers and afternoon ramblers. There is a watch – one of those smart-technology devices capable of producing all sorts of unnecessary metrics – on Sarah Roberts's wrist, but she has forgotten to switch it on. Roberts, a grandmother of five, tends not to take note of such things. When she does go for a run – an occurrence of surprising infrequency – she prefers to be guided by feel; distances and times forgotten upon return to her front door. The fastest 75-year-old woman in history – a multiple world champion and world-record holder – possesses no training logbook, no coach and, most intriguingly, almost zero running pedigree for most of her life. Asked by the hastily stretching Guardian journalist – foolishly attempting to keep pace for a few miles – how she is capable of launching straight into a run without any semblance of a warm-up, she reveals she only stretches before races 'so that I don't look unprofessional'. Her Great Britain Masters singlet reveals taut muscles and supple limbs that would never have been employed for their current purpose were it not for a holiday to South Africa eight years ago. Trips there had been a frequent occurrence long before a Cape Town-based friend asked whether Roberts and her husband George would like to join their regular Saturday morning parkrun – the wonderful innovation that welcomes all comers to undertake 5km at whatever pace they choose. Sheltered under trees at the foot of Table Mountain, they savoured this one at no more than a pleasurable amble. The following week they went again, only this time Roberts ran small segments. On their return to their Hertfordshire home, the couple decided to sign up to their local parkrun. For three years, almost every Saturday morning involved a 5km run, with Roberts converting from running novice to regular attendee, whittling her time down from just shy of 30 minutes to less than 23. Just a few weeks off her 70th birthday, she then took a plunge by joining her local athletics club, Dacorum, and signing up for an 800m race at the end of the summer. 'I was discovering I was really quite good,' she explains after our canal run, while sitting in front of an antique mantel clock in a living room adorned with furnishings from decades gone by. 'That made me think I ought to see whether I could do other things, so I put myself in for an 800. I'd never even been on a track before. The gun went and all I knew is I had to go round twice. 'The only other people in the race were either under-17 or under-15, and then there was me, almost 70. These girls just shot off in the distance looking like gazelles and I ran round. I was way last and didn't know what time I'd done, but someone told me it was rather good for my age.' The Covid pandemic dashed almost all running opportunities over the next two years, aside from irregular parkruns when permitted. So, it was not until early 2022 that she was able to contest another 800m, unexpectedly taking the scalp of a multiple global age-group champion in the process. 'Nobody had heard of me or expected me to do anything,' says Roberts. By 2023, she was a double British champion in the 70-74 age group. The following year she won three world titles over 800m, 1500m and 5,000m, before adding four more indoor golds this March. 800m outdoor: 2min 58.12sec800m indoor: 2.57.321,500m outdoor: 6.06.201,500m indoor: 5.58.15Mile outdoor: 6.40.323,000m indoor: 12.28.825,000m outdoor: 22.40.155km road: 21.3310,000m outdoor: 45.59.8110km road: 44.33 Since her birthday last October, she has swept the board of 75+ world records over every track distance from 800m to 10,000m indoors and outdoors, as well as 5km and 10km on the road. Last weekend, she added mile and 10,000m world records to her bulging haul despite less than 90 minutes between races. It is a staggering array of accolades for someone whose running experience never previously extended beyond chasing primary school friends around the playground. Upstairs in their smart detached home, off a hallway lined with photos of their children and grandchildren, sits a room that used to function as an office but is now primarily occupied with Roberts' late-blooming running career. Surrounded by cardboard boxes marked with such mundanities as 'sewing', 'Scrabble' and 'wrapping paper' lie an assortment of athletics paraphernalia, from certificates to printed race results, and photo albums to a frankly overwhelming number of medals. How much does running now occupy Roberts' life, I wonder? 'Only 95%,' says George, joking, who happily travels around the country and abroad to watch his wife of almost 54 years race. By this point, there is an obvious question that needs answering. How on earth does a woman who had never run until she was 67 become the fastest of all time? Despite not taking part in any organised sport beyond the briefest of social netball stints many decades ago, Roberts has always been a keen gym goer. Initially just the odd circuit class here and there during her days working as a solicitor and raising two children; latterly, post-retirement, every day and all conceivable options, from boxing to Zumba, and yoga to legs, bums and tums. A few years ago, when her gym held a contest to see who could hold the longest plank, Roberts, then just shy of her 70th birthday, tapped out victorious after 10 minutes and 15 seconds. Only boredom, and a lack of genuine challengers, made her stop. Recently, while hoovering up world titles in Florida, she was approached by researchers who asked to conduct some tests on her. They found her resting heart rate drops as low as 38 beats per minute and her VO2 max, which measures the body's ability to use oxygen during exercise, is 54 – both comparable to an elite athlete generations younger. She awaits full MRI results, but the radiographer who conducted the scans was instantly stunned by the lack of fat running through her legs. 'I feel fitter than I've ever felt before, which is fantastic,' she says. 'You don't expect to feel that when you're 75.' Her formal running training remains minimal. Other than a track session on Mondays and intervals on Tuesdays, her only other regular outing is the trusty Saturday morning parkrun. The remainder of her fitness is cultivated through those daily gym visits. Remarkably, given her advancing years, she is only getting quicker, so far improving her best times every summer since starting to compete. 'Whatever I'm doing seems to be working,' she says, smiling. Having braved that initial 800m race at an age when most would never consider it, she hopes her story may inspire others. What unknown talents lie dormant, just waiting for a chance to emerge? 'I'd like people to think that they should always try something,' she says. 'You never know what you can do until you try it. Never think you're too old. Give it a go. You will surprise yourself at what you can do if you really try to do something.' Earlier, as we left the towpath and wound our way through the village towards home – one of us sweating considerably more than the other twice his age – two scenarios sprang to mind. One was the thought of what she might achieve with the aid of a properly conceived full-time running regime – a suggestion that Roberts gives short shrift, fully content as she is, with sufficient honours to validate her current approach. The other was what might have been. Given her apparent physiological advantages – and notwithstanding the paucity of middle and long-distance events open to women until the latter decades of the 20th century – does she wonder what she could have accomplished if made aware of her running prowess at a younger age? 'No, I don't,' she says. 'I'm just very grateful that I've discovered it now. I've had a good life and enjoyed whatever I've done in the past. I don't go into what-ifs because all the other factors would have been different anyway. But I'm very happy for the current situation. 'I'm just amazed really. I could always run for a bus, but I never thought I would ever be anywhere near the best in the world. It never would have crossed my mind.'
BBC News
a day ago
- General
- BBC News
Rugby star Ella Cromack's conversion challenge for ill dad
An England rugby international is trying to break a world record by kicking more than 1,600 conversions in 24 hours to fundraise for her ill dad's Cromack, who plays for Harlequins and England U20s, is taking the exhausting challenge for her father, Simon, who was diagnosed with an incurable brain tumour in November Cromack, from Ashampstead in Berkshire, has had to travel to Germany for regular treatment for glioblastoma that is not available on the number of conversions - 1,611 - was chosen because the date that Mr Cromack received his diagnosis was 16 November. The 20-year-old fly-half made the first of the kicks from 12:00 BST on Friday at Harlequins' Twickenham Stoop Stadium and hoped to have completed them all by 12:00 on Saturday."Physically I'm sure my body will struggle. Mentally I think it's going to be quite easy knowing that I'm doing it for Dad," Ms Cromack said. Mr Cromack said: "It'll be hugely emotional I think but great fun at the same time and I have got everything crossed for her because she's an incredible person."He said he was "sad and disappointed" that the treatment was not available on the NHS because of its he added that "at the same time, it's very good in the sense that they give us exactly what we need [in Germany]"."Ultimately it's quite frustrating. It means that [during the treatment] myself and my sister Nell can't see our dad so that's pretty gutting from that perspective," Ms Cromack added. You can follow BBC Berkshire on Facebook, X (Twitter), or Instagram.
