The length of “a day” on all the planets in the Solar System, explained in a revealing video of just one minute

The Universe is full of unknowns for humanity. What’s more, even data that we know ends up being questioned and reformulated, such as: the distances between planets in the solar system. In fact, as a millennial, when I was a child I learned all the planets at once and then I had to forget about Pluto. However, a reasonably solid and most interesting piece of information is How long is a day on a planet in the Solar System?information that on Earth is approximately 24 hours (23 hours and 56 minutes, specifically). This duration is due to the average time it takes our planet to complete a rotation on its own axis, although translation has an influence. Furthermore, it has evolved historically due to the gravitational pull of the Moon. Thus, and in general terms, we can establish that to estimate this duration, factors influence its radius, its orbit and also interactions with other celestial bodies. The reality is that we are facing a non-intuitive pattern with results that defy logic. To solve the question numerically, the popular science channel The Brain Maze has a great video the most agile and visual to clear our doubts with the figures in just one minute: Now we know how much, but it is even more interesting to understand why. As a summary, there are certain general rules that are met: paradoxically the largest planets are those that rotate the fastest and those closest to the Sun have suffered the effects of gravitational tides in such a way that they have slowed down to almost a stop. Although we already told you that there are quite a few anomalies. The counterintuitive pattern for determining how long a day is The Sun and the planets of the solar system. The sizes are to scale, but the distances are not. By Edits by Pepedavila. Source image on Commons edited by Farry, credited by original uploader to “Martin Kornmesser”, and later an anonymous edit re-credited it to “zaria mayers”. – Edit of File:Planets2008.jpg by Farry., Public domain, https://commons.wikimedia.org/w/index.php?curid=20584284 Giant planets have shorter days than the Earth and in short, they spin fast because they grew fast. When the Solar System formed, these early planets accumulated gas and dust with angular momentum. The gas giants captured so much material in a short time that they were able to preserve almost all of that original angular momentum. They go without brakes and it shows: it takes Jupiter less than 10 hours to make a complete revolution on itself, despite the fact that compared to Earth, it is more than 300 times its mass and 11 times larger. With Saturn this also applies, but for Uranus and Neptune the explanation is incomplete: the ice giants also spin fast for the same reason, but their history is much more eventful, either due to collisions or disturbances in the early days. On Mercury and Venus the days become eternal. The rocky planets close to the Sun found a brake in the tides. Mercury is so close to the star that its gravity has dissipated its original rotation over time. If you were on the surface of Mercury looking at the Sun, you would see it stop, move backwards, and move forward again: it is the effect of its elliptical orbit and its slow rotation, compared to its orbital speed. In fact, even has a double dawn in some parts of the planet. Venus is also slowed down by the sun’s gravity, but it also rotates in the opposite direction. Because? Good question, for you, for me and for science in general: it remains a mystery, although there are hypotheses. A curiosity to reinforce the rarities of Venus: a day lasts longer than its own year, it takes 243 Earth days to rotate on itself and only 225 to complete its orbit around the Sun. By the way, the fact that a day on Mars and on Earth lasts practically the same is, according to science, almost certainly a coincidence. This similarity and other factors have fueled for decades the idea that Mars is the ideal candidate to host life. In Xataka | We have been deceived by the distances of the Solar System: the closest neighbor to Neptune is Mercury In Xataka | The true size of all the planets in the Solar System, explained in a clarifying video

Science has investigated why we bite our nails or leave everything until the last minute: “controlled explosions”

Biting our nails until it hurts, bingeing on junk food after a stressful day either open TikTok just when we have to start workingit is not an irritating habit that we would like to erase from our daily lives. But the reality is that science is beginning to see these behaviors in a radically different way: as a protection strategy for the organism. The brain seeks survival. As pointed out by different experts such as clinical psychologist Charlie Heriot-Maitland, author of Controlled Explosions in Mental Healthour brain prefers to inflict controlled “microdamage” on itself rather than face a greater and unpredictable threat. And the premise from which affective neuroscience and evolutionary psychology start is forceful: our brain is not programmed for us to be happy, but it is programmed to seek survival. Which is precisely what we did thousands of years ago when we tried to hunt or flee from predators. Systems that are still very present in our genetics. A hypersensitive system. This threat detection system is hypersensitive today. In the modern world we do not have to flee from a predator, but criticism from the boss or the fear of failing in a project activates the same alarms that a predator in the savanna activated in our ancestors. And faced with this unbearable stress, the brain looks for an escape route that acts as a “safety valve.” This is what Heriot-Maitland calls “controlled explosions.” Nail biting. Why can something as absurd as biting your nails or picking your skin be “protective”? The key is predictability. And in a chaotic world and an emotional, abstract and difficult to manage threat, cause us a little physical damage (like biting a cuticle), causes the brain to divert attention towards a specific, real stimulus and, above all, under our control. In this way it works as a “costly signal”, since we prefer a small and known damage to cushion emotional pain that we perceive as potentially devastating. Procrastinating is not laziness. scientific literature speaks in this sense of the self-handicapping (self-limitation), which suggests that we put obstacles on ourselves to protect our self-esteem. This way, if you stop studying for an exam and fail, you can tell yourself, “I failed because I didn’t study.” It’s a small damage to your ego. However, if you study to the maximum and fail, the conclusion is much more painful: “I failed because I am not capable.” The brain prefers the narrative of lack of effort (microdamage) rather than facing the threat of incompetence that poses greater emotional damage to anyone. It is not exclusive to us. In nature, there are numerous social insects that resort to defensive self-immolation in order to save their colony, as we already saw. In our case, the mechanism is something like this: we sacrifice our current well-being, such as physical health, to reduce a perceived long-term risk. The problem is that this system is designed for life or death situations, not to manage the chronic stress of the 21st century. In this way, what began as a useful defense ends up becoming a self-defeating pattern that generates more anxiety than it relieves. How to avoid it. If we understand that modern nails or procrastination are defense mechanisms, the solution changes completely. In this way, modern therapies, such as Compassion Focused Therapy, They propose that the first step It is not fighting against the habit, but understanding the reason for its existence. The most important thing in this case is not to punish yourself, since self-criticism is perceived by the brain as other threatens more, which reinforces the need to resort to the destructive habit to calm down. In this way, if we generate security, the brain will not have the need to cause these “controlled explosions.” Images | Sander Sammy Tim Gouw In Xataka | Procrastination is one of the great temptations of the mind. There are techniques to avoid it, according to science

Last minute gifts for Santa Claus with good discounts and fast delivery

Every year you promise yourself that you will never be caught out again when it comes to buying Christmas gifts. But, here you are, another year, looking for what to give. If you want to avoid the stress in stores that exist these days leading up to Christmas Day, you are in luck, because there are websites (like Amazon) where you can enjoy fast delivery on a multitude of products. We show you a selection with some gift ideas They arrive in time for Christmas Day. Shaver Philips OneBlade 360 by 34.98 euros: with 360 blade and autonomy of 45 minutes. Virtual reality glasses Meta Quest 3 by 499 euros– Compatible with Xbox Cloud Gaming. amazon Echo Show 8 by 179 euros: 8 inches and with spatial audio. smart ring OURA Ring 4 by 279 euros: waterproof and one week of autonomy. portable projector XGIMI MoGo 2 Pro by 339 euros: with Google TV and 8W speakers. Philips OneBlade 360 ​​Shaver We start our selection of gift ideas that arrive on time with one of the personal care devices best sellers among the male audience. This is this Philips OneBlade 360 ​​shaver, ideal for keeping your beard in perfect condition. Its usual price is 59.99 euros, but now it is available for 34.98 euros. It is used for the beard and body and stands out for being efficient even with the longest hair. Allows for an easy and comfortable shave and comes with a innovative 360 ​​bladewhich can be tilted in all directions. Its battery offers up to 45 minutes of autonomy and comes with three 360° blades, three beard combs, a body clicker and a protective cap. Philips OneBlade 360 ​​Authentic Barber, facial and body electric shaver and trimmer The price could vary. We earn commission from these links Meta Quest 3 virtual reality glasses If you want to give an innovative technological device, these virtual reality glasses Meta Quest 3 are a good option. Now, you can buy them on Amazon for 499 euros and you can have them at home tomorrow. The Meta Quest 3 They come with an Infinita Display 4K+ screen, with a 120 Hz refresh rate. They are compatible with spatial audio and include a dual RGB camera. They are also compatible with Xbox Cloud Gaming and its battery offers a range of up to 2.2 hours. Meta Quest 3 512 GB — The most powerful Quest The price could vary. We earn commission from these links Amazon Echo Show 8 Amazon has a good number of devices with Alexa that make good gifts for Christmas. One of his latest releases is he Next-generation Echo Show 8a smart screen ideal for a connected home. Now, you can take it for 179 euros. This Echo Show 8 has a eight inch touch screen with HD resolution. Comes with Alexa integrated as standard and stands out for its sound, since it comes with spatial audio. It allows you to play series and/or movies through streaming apps and, in addition, it allows you to play audiobooks through Kindle. Amazon Echo Show 8 (latest generation) The price could vary. We earn commission from these links OURA Ring 4 Smart Ring Although smart watches are the best-selling type of wearables, now you can surprise at Christmas by giving a smart ring. On Amazon, you can buy the OURA Ring 4 with a 30% discount. It has gone from costing 399 euros to 279 euros. This smart ring OURA Ring 4 It has a battery that offers up to a week of autonomy and is very comfortable to wear. Is waterproof and is made entirely of titanium. Plus, it comes with your first free subscription to Oura. OURA Ring 4 Smart Ring The price could vary. We earn commission from these links XGIMI MoGo 2 Pro Portable Projector If you want to surprise a movie buff, a portable projector is one of those essential gifts. Now, on Amazon, they have this one on sale XGIMI MoGo 2 Pro. It has a 24% discount and you can get it for 339 euros. This portable projector comes with operating system Google TV integrated. It has 430 ISO lumens and its configuration is very simple. It also integrates two 8 W speakers with Dolby Audio. Finally, its compact size will allow you to take it anywhere comfortably. XGIMI MoGo 2 Pro (New) 1080P Mini Portable Projector The price could vary. We earn commission from these links Some of the links in this article are affiliated and may provide a benefit to Xataka. In case of non-availability, offers may vary. Images | Freepik, OURA, XGIMI, Philips, Meta Quest and Amazon In Xataka | Best “smart” Amazon Echo speakers. Which one to buy and recommendations based on use In Xataka | Which Kindle to buy: buying guide with recommendations to get it right with Amazon e-book readers

save the most with Samsung’s last minute Black Friday deals

We are almost finishing the Black Fridaya day that has traditionally always brought us the best offers of the year. We may have missed out on a few bargains at this point, but we still have a last minute opportunity with the official Samsung store. It doesn’t matter if you are looking for a mobile phone, a tablet or an appliance: There are real discounts that are still available. We can find discounts on all their product lines, ranging up to 50% on appliances, up to 61% on televisions and even up to 35% on mobile phones. Thanks to this we will find very attractive prices that are already worth it, but we also have the opportunity to lower them even further by applying some discount coupons or using a certain payment method. In addition to all of the above, we cannot ignore that we have available Delivery and Premierea Samsung program with which we can deliver an old device and receive a very good discount in exchange. All without taking into account that we have a coupon available that will allow us to take some devices some Galaxy Buds3 as a gift. There is a lot to choose from right now, but below we are going to talk to you about some offers that we find very interesting: Galaxy A56 5G by 360 eurosthe best Galaxy A to date in its version with 256 GB of storage. Galaxy Tab S10 FE by 484 eurosa very interesting tablet for working, studying or even watching movies. Combi refrigerator 185 cm by 557.10 eurosappliance with very good capacity and efficiency. Bespoke AI Washing Machine by 531.05 eurosa washing machine that has brutal energy efficiency. Smart TV QLED QEF1 by 371.45 eurosa brutal quality-price option if you are looking for a 50-inch television. Smart TV Neo QLED QN1EF by 1,187 eurosa television with MiniLED technology and 85 inches. Galaxy A56 5G If we are looking for a balanced phone that will last us many years, but without spending too much, then perhaps it will fit us very well. the Galaxy A56 5G. It stands out for offering a 6.7-inch Super AMOLED screen with 120 Hz and for coming with an Exynos 1580 chip, so good performance is assured. Its battery is 5,000 mAh and has six years of guaranteed updates. Its starting price is 529 euros in its 256 GB version, although we now have it reduced to 379 euros. If we make the purchase from the application using the ‘APP5’ coupon, then we will end up with more than attractive ones 360 euros. It should be noted that if we ask for a coupon in the expert chat, we will receive a charger as a gift. The price could vary. We earn commission from these links Galaxy Tab S10 FE Also a very balanced tablet option, we have this Galaxy Tab S10 FE. It stands out for being versatile and for coming with the S Pen, an accessory that will allow us to take notes or draw. Its 1.09-inch 90 Hz screen makes it very interesting for watching movies or even playing games, all without forgetting that it has an 8,000 mAh battery that has 45 W fast charging. In addition, it has seven years of guaranteed updates. The RRP of the 256 GB version of it is 679 euros, although we now have it reduced to 509 euros. In order to get it a little cheaper, as with the previous mobile phone, we can make the purchase from the app with the code ‘APP5’. In this way, its price remains at 484 euros which we can accompany with a gift charger if we request it in the expert chat. Galaxy Tab S10 FE (256GB) The price could vary. We earn commission from these links Combi refrigerator 185 cm Now it’s time for the appliances. As a very interesting option if we are looking for a new refrigerator, we have this combi with 344 liters of total capacity. This is possible thanks to Samsung’s ‘SpaceMax’ technology, which allows more space inside without increasing its measurements. It has WiFi and can be integrated into SmartThings, which will allow us to keep track of its consumption from our mobile phone, which is very useful. The RRP of this model is 969 euros, although Samsung’s Black Friday has it available for 689 euros. If we ask for a code from the expert chat and use Delivery and Release, then we can get this appliance for 557.10 euros. Combi refrigerator 185cm 344L The price could vary. We earn commission from these links Bespoke AI Washing Machine What if what we need is a new washing machine? This Bespoke AI from Samsung will allow us to have a modern appliance at home that stands out for exceeding the requirements of the A energy rating by 20%. Translation: it will allow us to save on the electricity bill every month. All without forgetting that it also has very interesting technologies such as ‘AI Ecobubble’, which will allow us to obtain better results in our laundry thanks to AI. Now let’s go with the offer. The RRP of this model is 999 euros, although right now we have it reduced to 619 euros. As with the previous one, using Delivery and Release we will obtain a direct discount. If we add the expert chat code to this, we can take this washing machine home for free. 531.05 euros. The price could vary. We earn commission from these links Smart TV QLED QEF1 Samsung’s QLED line stands out for offering good image quality and super competitive prices. This QEF1 model is living proof of this, a television that also has Samsung’s artificial intelligence (Vision AI) and seven years of guaranteed updates, which assures us of a device that will last a long time with us. The RRP of the 50-inch version of this Smart TV is 699 euros, although it is now reduced to 391 euros. If we make … Read more

Every minute that passes is a piece of Napoleonic jewel that will never be recovered

From the moment it was known theft of the Napoleonic jewels Inside the Louvre in Paris, France began two parallel races where they sought to try to recover part of the loot. The first one didn’t last long. The next day he found out that he was not going to receive a single euro. by insurance because French law prevented it. The second, and more complicated, is a race against time, because every second that passes is a piece that may not be able to be recovered. A global black market. I counted this week The Wall Street Journal that the assault on the Louvre has immediately activated the semi-clandestine ecosystem through which stolen art and, in particular, historical jewels circulate: an international circuit that moves billions and that connects diamond cutting workshops in Dubai or Delhi with discreet jewelers in New York, Antwerp or Tel Aviv. The priority now is not only to recover the pieces, or those that can, but to do so before they come in on that circuit and suffer the most feared fate: being dismantled, separated from their mount and converted into anonymous gems and molten gold without a past. Jewelry is not paintings. Unlike a Picasso or a serial watch, a stolen jewel can disassemble in minutes: the gold melts, the diamond is cut, the emeralds are rearranged and historical traceability disappears. Although they lose their premium for Napoleonic symbolic value, they retain their value as raw material. The situation reinforces the incentive: the ounce of gold exceeds $4,000 after go up 60% in one year, detonating a wave of metal thefts throughout Europe. And unlike pictorial art, ancient gems lack microengravings or universal databases that allow them to be blocked from being released to the market: once split and relocated, they disappear. The method. The media counted this week that the coup combined speed and daring, but left a trail unbecoming of a professional command: the assailants used a moving elevator to access through an upper window, burst display cases with radials and fled on scooters… leaving abandoned the elevator itselfthe tools, part of the costume (work vests) and even an imperial crown from the 19th century with 1,400 diamonds and 56 emeralds. For former specialized agents, this distances the Pink Panthers profile (disciplined groups that leave no trace) and suggests a bold but technically weak team, capable of entering, but not maximizing value or minimizing exposure. What will the thieves do now? For the Journalif the museum does not pay a reward or admit negotiation, the only viable commercial path is cutting and atomization: re-cut large diamonds into smaller sizes to erase the mark, separate secondary stones easily absorbed by the gray trade and melt the gold to sell it as metal. The experts remember that a receiving network remains up to 90% of value: the thief usually receives only 10% of the legal market (the “price of silence” that is distributed among those who participate in the risk, the conversion and the shielding of concealment), but even so the black reward can be higher than that of a stolen painting, the trace of which jumps to public bases. The crux. The incentive persists because the penalties are low compared to profit and because the stolen jewel, once decomposed, leaves few traces to incriminate. Experts they propose to reclassify the looting of heritage as cultural terrorism (harnessing penalties and sending a regulatory signal). Plus: it forces museums to raise standards physical and procedural, from the control of systems such as cranes or external platforms to, as a deterrent idea, verifying the identity of visitors elevated to sensitive parts, although this clashes with the tourist experience and the flow of masses. The Louvre remained closed after the robbery, remembering that beyond the property loss there is an immediate reputational and operational cost. It only works in the shade. Everything in the jewel crime revolves around at speed: the faster they pass into the hands of cutters and smelters, the more irreversible the evidentiary damage is and the more liquid the exit to the black market. Delay, on the other hand, increases the logistical risk, multiplies leaks within the criminal chain, opens cracks for denunciations and devalues ​​the loot before it produces income. That is why the decisive race is not so much between thieves and insurers, but between stopwatches: the clock that marks how long it takes the receivers to volatilize the identity of the pieces compared to the one that measures how long it takes the State to close the perimeter and cut escape routes. The only window. If you want, the Louvre robbery embodies the Achilles heel of historical jewels: they allow a high-profile crime with a low profile outlet because their cultural identity is destructible at the will of the gangsters and its material value remains. The paradox is that an imperial loot can end up becoming in minor gems sewn into the lining of a jacket heading to an unknown jeweler before the police complete the first sweep. Thus, the only real window to rescue the assets is not in the trial, but in the very brief interval between the blow and the cuttingand once that threshold is crossed, what is stolen ceases to exist as part of history to survive only as matter. Image | Benh LIEU SONG In Xataka | No wonder the theft of jewels from the Louvre has been so easy: the museum’s security has been a disaster for more than a century In Xataka | If the question is why Napoleon’s jewels were stolen from the Louvre, the answer is simple: to break them into a thousand pieces.

We thought that sleeping in 90 -minute blocks improved rest and energy when you woke up. Science has its doubts

As so many other viral trends In social networks, in recent years a seemingly simple formula has run like gunpowder for improve nighttime rest and wake up fresh like a lettuce: Calculate the dream in 90 -minute blocks To wake up just when one ends those blocks. This technique ensures that, when you wake up just when a complete sleep cycle ends, people They will feel more rested and with greater energy to face the day. However, scientific evidence questions the reliability of this method. The myth of exact 90 minutes cycles A survey of 2024 made by the American Academy of Sleep Medicine He revealed that almost one in ten American adults (9%) had tried this technique to determine what time they had to go to bed and wake up and have even been created Online calculators To make this calculation easier. The basis of this technique is based on Natural sleep cycles that are part of the set of cycles that regulate our body known as Circadian cycles. These cycles are the ones that determine the time of sleeping, of waking up, of eating, etc. According to this technique, a person who wants to wake up at 7:00 in the morning should go to sleep at 22:00 to complete six full -minute sleep cycles, or 23:30 to complete five sleep cycles. The concept is based on the idea that awakening at the end of a complete cycle, in phase V or REM, When the dream is lighterwould avoid the feeling of morning stun that occurs when we wake up in the middle of one of these cycles. Sleep cycles were first identified in the 1950s, when researchers They discovered These patterns called Ultradian cycles. During the night, the alternate brain between different phases: light sleep, deep sleep and REM sleep (characterized by the most intense dreams). Dr. Fouzia Siddiqui, Medical Director of Sentara Rockingham Memorial Sleep Center, explained in Popular Science that each of these phases fulfills specific functions for physical and mental recovery. However, the popularization of this scientific knowledge has led to excessive simplifications that They do not reflect the real complexity of human sleep. The most important of them: that the sleep cycles last exactly 90 minutes. That is the biggest problem of this theory. Scientific reality dismantles promises Recent studies They have shown that the duration of sleep cycles is not a constant but a variable. That is, its duration varies depending on each personand even the same person You can record more or less long cycless during the same night or vary according to the day. An investigation He analyzed more than 16,000 nights of sleep in 573 different people found that the median duration of sleep cycles was not 90 minutes but 110 minutes, with 75% of the cycles ranging between 95 and 130 minutes. Another study based on 2,312 nights of polysomnography data determined that the average duration of the cycles was 116.9 minuteswith a standard deviation of 39.7 minutes. In other words, establishing the 90 minutes as a basis for calculating sleep cycles not only is not an inaccuracy, but in practice it can be counterproductive since there is also the risk of interrupting the sleep cycle before it ends. Dr. Andrea Matsumura, specialist in Sleep Medicine and founder of Sleep Goddesss Method, said In the article of Popular Science that “factors such as stress, Alcoholdiseases or even bedtime, impact on the sleep cycle, so this method does not really guarantee that you wake up less stunned. “ In addition, the studies identified that as night progresses, sleep cycles They tend to elong in a natural wayso that the former can last between 70 and 100 minutes, while the later range between 90 and 120 minutes. Making it impossible to predict at what point in the cycle You will find yourself when it is time to wake up. On the other hand, in a standard sleep session of a healthy person, it is very unlikely be ahead of a deep phase of sleep since phase 3 of sleep, the deepest and repairinglasts between 20 and 40 minutes and usually occurs in the middle of the sleep session, and then move back to phase 2 which is a relaxing but lighter dream. Therefore, unless you are sleeping very few hoursthe awakening occurs from that lighter phase, and not from a deep phase as the 90 -minute block theory supports, which would leave a greater feeling of stunning. That is, this theory is based on two real facts: that awakening from phase 3 leaves you more stunned and that sleep cycles last around 90 minutes, to set up an alleged infallible technique to wake up as a rosto. The problem is that sleep It is not an exact science And the only thing that really works is Ensure the Descaso Hours that the body needs … and there are not even certainties about How long is needed. In Xataka | I put myself in the hands of some “sleep headphones” in the hope of reconciling sleep. It has come out regular Image | Unspash (Shane, Greg Pupas)

These are the five best last minute offers in technology that will be exhausted in the Prime Day of Amazon

There are very few hours left for the end of Amazon Prime Day 2025. At 00:00 hours we can not take advantage of the sales of the event, so in this article we have reviewed the best offers we have seen during these days, focusing on different types of devices. Are you looking for a good mobile or a clock? What do you want a Kindle? Much eye for this list of offers: AirPods Pro 2 by 199 eurosa more than interesting price to be an Apple premium product. Amazon Fire TV Stick 4K by 35.99 eurosif you expected a good offer in this type of devices, this model has the best value for money. Huawei Watch GT 5 by 155.99 eurosa Top smart watch at a much more content price. Google Pixel 9 by 565 eurosa more than interesting mobile that also comes next to a charger. Kindle Paperwhite Signature Edition by 154.99 eurosthe ereader with the best value for money of Prime Day. AirPods Pro 2 Amazon has chosen this prime day to launch its best offer in the AirPods Pro 2Apple’s most top TWS headphones. We have rarely seen them below the 229 euros They have been hard for many months, so it is an excellent opportunity to get them cheaper. Why are good headphones? Beyond design and construction, AirPods Pro 2 They offer excellent active noise cancellation, they are compatible with wireless load through MagsafeThey offer a very good audio quality and have gesture control. In addition, they have multipunto connection, they are compatible with Siri and offer an autonomy of up to 30 hours. * Some price may have changed from the last review Amazon Fire TV Stick 4K The same goes for the Fire TV Stick, this time we have seen a good assortment of offers with the most interesting prices, although once again we stayed with the Fire TV Stick 4K because it is the model with the best value for money, since they are found by 35.99 euros (There are also available Packs with Luna Commandinteresting if you also want to play video games in the cloud). He Fire TV Stick 4K not only offers a 4K resolution when reproducing content, but also comes with Alexais compatible with Dolby Vision and Dolby Atmos and offers excellent performance. In addition, it is compatible with Game Pass (a command is needed) and its Fireos operating system is quite fluid. Fire TV Stick 4K (last generation) * Some price may have changed from the last review Huawei Watch GT 5 If we talk about smart watches or smartwatch, one of the offers that we liked most is the one that has the Huawei Watch GT 5a spectacular watch that is at a minimum historical price. You can buy it on Amazon for a price of 155.99 euros. He Huawei Watch GT 5 It sets an excellent 1.43 -inch (46 mm) AMOLED panel, although what stands out most is in its Premium and elegant design. It includes GPS connectivity and a good assortment of sensors such as cardiac, includes side buttons, resists water pressure of five atmospheres and its battery lasts about 14 days. Huawei Watch GT 5 (46 mm) * Some price may have changed from the last review Google Pixel 9 As for mobiles, we have seen many offers: the Xiaomi 14t Prohe Xiaomi Mix Flip and a long etcetera. But there is another that has managed to sneak among the best, and it is none other than that of Google Pixel 9 that, by 565 eurosin this case next to a charger. It is not a gift, but it is appreciated at a time when we no longer usually see chargers in mobile boxes. He Google Pixel 9 It is an excellent mobile that, for this price, we must at least shuffle if we have a budget of between 500 and 600 euros. It is a very compact terminal, It has an excellent multimedia section (screen and speakers)offers six more years of software updates and cameras are at a good level. * Some price may have changed from the last review Kindle Paperwhite Signature Edition Finally, another of the best offers is found in the Kindle Paperwhite Signature Editionthe ereader with the best quality-specific relationship of the prime day 2025. It is an excellent model that is recommended for both those who want to start in these devices and for those who have been with them for a while. Its price has dropped to 154.99 euros. He Kindle Paperwhite Signature Edition Assemble a seven -inch anti -reflex screen and offer a Autonomy of up to 12 weeksimprovement in performance with respect to the previous generation, has 32 GB of internal storage, the frontal light can be regulated, it is water resistant and the huge catalog of the Amazon store can be accessed. Kindle Paperwhite Signature Edition (32 GB) * Some price may have changed from the last review Some of the links of this article are affiliated and can report a benefit to Xataka. In case of non -availability, offers may vary. Images | Apple, Amazon, Huawei, Google In Xataka | What Kindle Buy: Purchase guide with recommendations to succeed with Amazon electronic book readers In Xataka | The best mobiles (2025), we have tried them and here are their analysis

An electromagnetic cannon capable of reaching 3,000 shots per minute

‘Doom’‘Fallout‘,’Halo‘ either ‘Crysis‘They are some of the video games they have played with the idea of ​​the so -called Gauss riflesweapons that make use of magnetic fields to make the impossible possible: launch metal projectiles at a speed that escapes reason without a flash or backward, even absent from any sound. In universes like ‘Ghost in the Shell‘or movies like’Minority Report‘We have seen similar ideas, but sow within science fiction. Therefore, what China has announced is extraordinary. The weapon of the future. In an advance that could radically transform the concept of modern armament, scientists from the Popular Liberation Army of China have presented the development of the first Coilgun of the world Without condenseran electromagnetic cannon capable of reaching a fire cadence of 3,000 shots per minute. This figure, unattainable for traditional firearms and well above US commercial models such as The GR-1 “Anvil” (limited to 100 shots per minute), it has been possible thanks to a radical redesign of the feeding system: instead of using the traditional capacitors to store and release energy, the new weapon is directly fed by Lithium batteries matrices high performance. The approach eliminates recharge times between shots, considered so far the Achilles heel of electromagnetic weapons, and opens a path to achieve continuous fire at speeds so far exclusive to science fiction. MILIMETRIC PRECISION. The experimental prototype (revealed in a study reviewed by pairs published in the Journal of Gun Launch & Control) has a compact design Bullpup typeinspired by the Belgian subfusil P90and use 20 25 mm copper coils each. Its operation is based on sensors that activate accurately semiconductor nanoseconds of power (IGBT), feeding each fair 2 millimeters before the projectile enters it and Cutting The energy 35 millimeters after its exit. This sequential activation allows maximizing acceleration without generating inverse resistance, thus increasing the energy efficiency of the system. The weapon can shoot metal projectiles to 86 m/s speedswhich makes it appropriate for riot control, although its design is scalable for lethal applications. In addition, it includes algorithms of temporary position mappingsimulations of finite elements to optimize the shot and thermal dissipation systems that prevent the overheating of the batteries, even with current peaks of 750 amps. Invisible tactical advantages. The researchers highlight a series of key advantages over the first prototypes of years ago (video on top) that could make technology a reference in future military operations: There is no flash In the mouth of the cannon, the shot is silent and the level of lethality can be adjusted according to the situation. These characteristics make the Chinese coilgun an ideal candidate for, for example, covert missionssuppression operations and urban environments. Plus: the fire rate (five times higher than that of a AK-47 rifle) allows to create a kind of Continuous projectile wall which can saturate any attempt at enemy response in situations of disturbances or short -distance fighting. Of course, the study authors themselves recognize that there are still important limitations: precision is still low compared to traditional ballistic weapons and the battery recharge time Round an hourwhich conditions its continuous use in prolonged operations. New era? It is the question that floats with an announcement that will now have to show in public. On paper, China has achieved with this coilgun not only a technical milestone, but also a possible redefinition of portable weapons New generation. The conjunction between power electronics, millimeter control algorithms and advances in lithium batteries and semiconductor chips allows us to think about the near future where electromagnetic weapons are not science fiction, but more common in military arsenals. Researchers have stressed that the current prototype has a Non -lethal orientationbut its technical foundations already allow much more powerful, versatile and difficult to track variants. In a global context where technological supremacy is increasingly a decisive factor in geopolitical conflicts, Chinese development marks a new turning point that could alter the balance of power in advanced personal weapons. Image | CCTV In Xataka | China has just triumphed in a key military technology that USA parked: the rail and hypersonic speed cannons In Xataka | China is building an electromagnetic canyon of space airplanes, a project that NASA abandoned due to lack of funds

I have generated this video in less than a minute and from the mobile. This is how I see 2 in Gemini’s app

Yesterday he had Google as protagonist, and between all the news that presented was I see 3. His artificial intelligence generative text to video advanced on the right to all its competitors, being the first capable of generating audio next to the video itself. With the arrival of I see 3, I see 2 becomes an accessible version. So much, that you can try it in Gemini’s own app in both iOS and Android. In Xataka we wanted to test it, and the results are … good, very good. How to access See 2. I see 2 now part of the Google AI Pro plan, for 21.99 euros per month. This includes access to Gemini’s model 2.5, I see 2, flow, notebooklm, gemini in apps such as Gmail or Google Docs, and 2 TB of cloud storage. Access to see 3 will require the 250 dollar planfrom what I see 2 automatically becomes the most mainstream option and accessible to users that do not Look for professional uses with this AI. In iOS and Android. If you have the Gemini Pro Plan, as soon as you open the app on Android you will now see a video option, next to those of Research and Canvas. Just press this option to access the mode of video creation, with a generation of up to eight seconds. In the case of iOS, we have to go to the upper section of the app, and change the model that we have selected (2.5 flash, 2.5 pro or deep researc) to I see 2. Once you are configured thus, we can introduce the prompt. The instructions. Using I see 2 in Gemini is quite easy: we just have to be as descriptive as possible. The more detailed the description, the better the result will be. For its correct operation it is not necessary to write the Prompt in English, it works perfectly if we give the instruction in Spanish. Testing I see 2. One of yesterday’s great memes had to do with a challenge that is still choking many IAS: that of a person eating Spaguetti. This benchmark of the absurd implies complex understanding of textures, movement, deformation … and yes, I see 2 solves it. Not perfectly, but solves it. It is not a perfect. In a petition as simple as the “drone flight about Paradisiaca Beach. There are people surfing, palm trees, floring seagulls” has generated a fairly poor result. An idea to improve it? Having asked him not to be people, since generating so many elements has distorted the result. In this last example, two people dancing flamenco with a black background, surprise hair quality, how it has taken care of makeup, gestures … having made such a close plane the dance is not well appreciated, but it is another proof of how this AI works. There is no open bar. There are no more examples not because I don’t want to, but because Google has not left me. After generating a few videos (3,4) he has told me that he could not generate more until after half an hour. After half an hour … he hasn’t left me either. It is clear that paying 20 euros is not enough to create infinite videos, so we will have to use this tool with a certain moderation. Image | Xataka In Xataka | Google first taught its new glasses with a real demo: an unforeseen live and a bet that points away

The five last minute chollos that you cannot miss at the Amazon Spring Offers party

The Amazon campaign is finishing. During these last hours (until 00:00 specifically) we can access the discounts that the store has in a huge variety of devices. Therefore, we have gathered the Five best offers That has the store right now. Samsung Galaxy S24 by 699 eurosa very interesting price in its 256 GB configuration. LG Gram by 899 eurosa laptop that offers an autonomy of almost 30 hours. Samsung Qn85d by 849 eurosa good 65 -inch television of the high -end of the brand. Fire TV Stick by 27.99 eurosan interesting price to have the Dongle of the brand with a good discount. TP-LINK TAPO C200 by 20.99 eurosa good surveillance chamber that is now almost at half price. Samsung Galaxy S24 How long will we see the Samsung Galaxy S24 In stores? Perhaps this is one of the last times that we see this model on offer taking into account that outside any campaign it is difficult to find stock of almost any configuration (something we also see in the Ultra S24). Good guilt is his current generation, the Samsung Galaxy S25which is much more expensive because it is not usually offer. Therefore, the Samsung Galaxy S24 of 256 GB, which is now 699 eurosit is one of the best offers that we can find currently in stores. Even in pccomponentes you can find for 689 euros. It is a mobile that It highlights practically for everything —It is one of the best mobiles of 2024 – and still has many Android updates. Personally, to buy a mobile right now, without a doubt, I would choose the Galaxy S24. Samsung Galaxy S24 (256 GB) * Some price may have changed from the last review LG Gram During the Amazon campaign we can find a lot of laptops, but … Which one would buy me? I have it more than clear: if I don’t buy a macbook to work, I would choose the LG Gram. Beyond its price, which is now for 889 eurosWhat interests me most about this laptop is that not only comes with a good Intel I7 processor, but also its battery touches the 30 hours of autonomy. In addition, it comes with a very good anti -reflex screen; It is a computer oriented to work, and it shows. * Some price may have changed from the last review Samsung Qn85d During this last week we have also seen very good prices on televisions, but without a doubt one of the best discounts is Samsung Qn85da television of the high -end of the brand that has gone from costing more than 2,000 euros to 849 euros. And it is a good price considering that it comes with a screen 65 -inch neo qledis compatible with Dolby Atmos and offers an excellent combination between image and sound sections. In addition, it is compatible with Alexa. Samsung QN85D (65 inches) * Some price may have changed from the last review Fire TV Stick Of course, one of the most relevant devices in each of Amazon’s campaigns is the Fire TV Stick. We have several offers in this campaign, but we are looking for the most economical model Fire TV Stick HD We can find it for only 27.99 euros. Comes with Alexa, offers good performance in its Fireos operating system and the command includes Direct access to apps such as Netflix or YouTube. * Some price may have changed from the last review TP-LINK TAPO C200 Surveillance cameras have become quite popular in recent years, and fortunately having one at home can be very economical. In fact, during the Amazon campaign we have the TP-Link C200 For alone 20.99 eurosa super adjusted price for everything that offers: Full HD resolution, 360º rotation, night vision, movement detectioncompatibility with Alexaadmits SD cards and much more. * Some price may have changed from the last review Some of the links of this article are affiliated and can report a benefit to Xataka. In case of non -availability, offers may vary. Images | Samsung, LG, Amazon, TP-Link In Xataka | The best mobiles, we have tried them and here are their analysis In Xataka | Best televisions in quality price. Which to buy and seven recommended 4K 4K

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