Amnistía Internacional Puede que tenga sus detractores, pero nunca debería decirse que la tecnología al menos no nos ayuda a predecir nuestra desaparición.
hora de muerte es una divertida (!) aplicación de inteligencia artificial del desarrollador de San Francisco Brent Franson, fundador del sitio de seguimiento de hábitos Most Days, que analiza la salud y el comportamiento a gran escala para adivinar a) la fecha exacta de la muerte yb) lo que estás lo más probable es que termine en.
“Death Clock AI analiza tus elecciones de vida para determinar cuándo morirás y cómo puedes mejorar tus hábitos para vivir más tiempo”, dice la carta. el sitio. (La parte de predicción es gratuita, pero si quieres desbloquear las formas en que supuestamente alargarás tus años mortales, tendrás que pagar la suscripción anual de $79,98).
No hace falta decir que la curiosidad se apoderó de mí. ¿Viviré hasta los 90 años o me masacrarán en mi mejor momento? ¡Tenía que saberlo!
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Velocidad de la luz triturable
Más que una situación de película de terror que involucra una cuenta regresiva maldita provocada por espíritus malévolos, la aplicación en sí es una serie de preguntas relacionadas con la salud, que van desde la edad y el estilo de vida hasta los hábitos alimentarios y de bebida.
Quizás mentí un poco acerca de comer alimentos procesados. Crédito: Vigilancia de la muerte
Una vez que hayas completado el cuestionario, serás recibido con una alegre serie de mosaicos con el tema de Grim Reaper que te indicarán la fecha exacta en la que morirás y qué cosas tienen más probabilidades de matarte. ¡Tengo las enfermedades cardiovasculares como mi número uno!
He hojeado los detalles porque soy supersticioso. Crédito: Vigilancia de la muerte
Entonces, ¿qué tan precisa es esta cosa?
Por un lado, la compañía afirma que el modelo de IA se basa en estadísticas de más de 1.200 estudios, incluidos los realizados por universidades como Stanford, Berkeley y la Universidad de California. Por otro lado, el cuestionario parece un poco limitado. Aunque me preguntaron sobre la esperanza de vida promedio de mis abuelos, por ejemplo, no me pidieron muchos detalles sobre la salud general de la familia. La aplicación tampoco me preguntó sobre mis hábitos de viaje diarios ni si tenía pasatiempos riesgosos.
Al final, decía que moriría a los 83 años, pero con algunos ajustes (y ahí es donde entra la tarifa anual) puedo resolver las cosas hasta que tenga 96 años. En lugar de ser un presagio de fatalidad, probablemente sea mejor ver la aplicación (al menos la versión paga) como una forma de modificar sus hábitos diarios para maximizar la salud y la longevidad.
mellizo Es posible que los robots Android pronto puedan realizar más tareas, según un informe. El chatbot de inteligencia artificial (IA) agregado a los teléfonos inteligentes Android puede realizar muchas tareas, como responder consultas, buscar consultas en Internet, escribir artículos y mensajes. Sin embargo, el chatbot cambia la funcionalidad al Asistente de Google cuando se trata de tareas integradas como consultar recordatorios, configurar una alarma o enviar un mensaje. Puede que este no sea el caso por mucho tiempo, ya que el informe afirma que Gemini pronto podrá configurar alarmas y temporizadores de forma independiente.
de acuerdo a un informe Según un informe de Android Authority, la aplicación Gemini en Android puede obtener una nueva extensión de herramienta de reloj que le permitirá configurar alarmas y temporizadores cuando el usuario lo solicite. La publicación detectó la nueva característica durante el proceso de desmontaje de la aplicación. La característica se vio en la última versión beta de Google Aplicación (versión 15.27.33).
Accesorio widget de reloj Géminis Crédito de la imagen: Autoridad de Android
En una captura de pantalla compartida por la publicación, la extensión Clock Tool se puede ver en la lista de extensiones de Gemini. Se puede invocar nombrándolo verbalmente o escribiendo “@Clock Tool”, seguido de la solicitud. En la captura de pantalla, esta acción hace que el chatbot de IA muestre un mensaje que dice: “Gemini se hace cargo del Asistente de Google”. para manejar algunas acciones a través de accesorios “. Luego, la herramienta Reloj realiza la tarea.
La nueva extensión se unirá a las extensiones Gemini existentes en Androide Como Google Flights, Google Hotels, Google Maps, Workspace, YouTube y YouTube Music. Además, el informe también encontró una nueva configuración que permitirá a los usuarios acceder al chatbot de IA mientras el dispositivo está bloqueado. Esta característica existía antes. Ha sido reportadopero ahora también ha aparecido una captura de pantalla de la configuración.
Configurar la pantalla de bloqueo de Gemini AI Crédito de la imagen: Autoridad de Android
Con la capacidad de bloquear la pantalla, los usuarios podrán usar Gemini mientras viajan y tener una conversación o hacer una pregunta rápida. También se puede acceder a todas las funciones de la extensión en la pantalla de bloqueo. El informe afirma que es posible que Gemini no pueda realizar tareas que requieran agregar credenciales o acceder a datos privados. No hay información sobre cuándo estará disponible la función para el público.
Los enlaces de afiliados pueden generarse automáticamente; consulte Declaración de ética Para detalles.
In principle, a nuclear clock should be more precise and more stable than an optical clock (pictured).Credit: Andrew Brookes, National Physical Laboratory/Science Photo Library
Scientists have taken a major leap towards making an entirely new type of clock — one based on tiny shifts in energy in an atomic nucleus. In principle, a nuclear clock could be even more precise than the world’s current best timekeepers, known as optical clocks, and less sensitive to disturbances.
A nuclear timekeeper could also allow physicists to study fundamental forces of nature in new ways. “We will be able to probe scenarios of dark matter and of fundamental physics that are currently inaccessible to other methods,” says Elina Fuchs, a theoretical physicist at CERN, Europe’s particle-physics laboratory outside Geneva, Switzerland.
Atomic clock keeps ultra-precise time aboard a rocking naval ship
The long-sought breakthrough — made by a collaboration between the Vienna University of Technology and Germany’s national metrology institute, the PTB, in Braunschweig — involved using an ultraviolet laser to prompt a nucleus of the radioactive metal thorium-229 to switch between energy states. The frequency of light absorbed and emitted by the nucleus functions as the clock’s tick. The researchers published their work in Physical Review Letters on 29 April1.
“This is major,” says Adriana Pálffy-Buß, a theoretical physicist at the University of Würzburg in Germany. Driving the transition with a laser is “the milestone you need to say ‘I’ll be able to build a clock’”.“It is a culmination of nearly a half a century of effort of many scientific groups,” says Olga Kocharovskaya, a physicist at Texas A&M University in College Station.
Precision timing
Optical clocks keep time so well that they waver by just 1 second every roughly 30 billion years. Their ticks are governed by the frequency of the visible light needed to shift an electron orbiting an atom such as strontium between energy states.
But a nuclear clock could do even better. It would use the more energetic transition of boosting the nucleus’s protons and neutrons to a higher energy state. This would use slightly higher frequency radiation, meaning that time could be sliced even more finely to create a more precise clock. More importantly, such a clock would be much more stable than an optical clock, because particles in the nucleus are less sensitive than electrons to external fields or temperature.
Climate change has slowed Earth’s rotation — and could affect how we keep time
But finding a material with a suitable nucleus has proved difficult. Energy transitions in most nuclei tend to be huge, requiring much more than the nudge of a tabletop laser. In the 1970s, physicists discovered that thorium-229 is an anomaly — its first energy state is extremely close to its lowest, ground state. And in 2003, physicists proposed using thorium-229 as the basis of a super-stable clock, but they needed to find the precise energy of the transition and its corresponding laser frequency, which would have been impossible to predict with any accuracy using theory. Since then, experimentalists have used range of methods to narrow down the figures.
To observe the transition, researchers placed radioactive thorium atoms into crystals of calcium fluoride that were a few millimetres wide. Scanning across the expected region with a purpose-built laser, they eventually hit upon the right frequency — around 2 petahertz (1015 oscillations per second) — which they detected by spotting the photons emitted as the nuclei returned to the lower energy state. Co-author Thorsten Schumm, an atomic physicist at the Vienna University of Technology, recalls scrawling “found it” in large red letters across his lab book at a meeting convened the next day to discuss the promising-looking signal. “It was crystal clear,” he says.
The team pinpointed the frequency with a resolution 800 times better that the next best attempt. A team at the University of California, Los Angeles, has since reproduced the result using a different crystal, but the same frequency, says co-author Ekkehard Peik, a physicist at PTB. It’s “a very nice confirmation”, he says.
Fundamental physics boost
To turn the system into an actual clock, physicists will need to markedly reduce the resolution of the laser, so that it stimulates the nucleus at almost exactly the right frequency to be read off reliably, says Peik. Building such a laser “remains a big challenge, but there are little doubts that it will be achievable in the near future”, adds Kocharovskaya.
If all goes well, the team says that a thorium-based nuclear clock could end up being around 10 times more accurate than the best optical clocks. “It’s the robustness with respect to external perturbations that will make this a better clock,” says Schumm. Hosting the nuclei in a solid crystal could also help to make the clock more compact and portable than optical systems.
Chinese team syncs clocks over record distance using lasers
Scientific methods that were made possible by super precise optical clocks, such as probing Earth’s gravitational field by measuring differences in clock speed, “could get a major boost”, says Kocharovskaya.
Physics could also benefit at a deeper level. A nuclear clock would be around 10,000 times more sensitive to changes in fundamental constants — such as the strength of the electromagnetic and strong nuclear forces — than an optical clock is, says Fuchs. This means that they could detect proposed forms of dark matter, an invisible substance that physicists think accounts for 85% of material in the Universe, and which are predicted to make minuscule changes in the strength of these forces.
“It could be that there’s very ‘light’ dark matter that wiggles around and that could make these fundamental constants wiggle,” says Fuchs. Nuclear clocks might be able to detect that wiggle, she says, because the energy of their transition is governed by these forces, and any change in their strength would alter the clock’s tick in a measurable way. Nuclear clocks could also detect whether some particle masses change over time, she adds. Fuchs and her collaborators are already working on their first paper, on the basis of the frequency measurement. “This is exciting us quite a lot,” she says.
An atomic clock that keeps time with the help of iodine molecules is sturdy enough to withstand a sea voyage.Credit: Will Lunden
Atomic clocks are usually either ultra-precise or sturdy, but not both. Now, scientists have created a precise clock that, when put through its paces aboard a naval ship, wavered by only 300-trillionths of a second per day.
The clock, which was detailed in a paper in Nature on 24 April1, could also provide a “vital fallback solution” if signals from global navigation systems are spoofed or jammed in conflict zones, says Tetsuya Ido, director of the Space-Time Standards Laboratory at the Radio Research Institute in Tokyo.
“I’m impressed,” says Elizabeth Donley, who heads the time and frequency division at the US National Institute of Standards and Technology in Boulder, Colorado. “We’re excited to get our hands on it.”
Atomic tick-tock
The ‘tick’ of the world’s best clocks is pegged to the frequency of the radiation that atoms absorb and emit as they oscillate between energy states. Clocks based on atoms of caesium and other elements that emit radiation at a microwave frequency have been used for decades. Some are portable and are sold commercially.
How climate change is affecting global timekeeping
Scientists have also developed clocks that use other elements, such as strontium, that emit at higher frequencies — visible light — to slice time even more finely. But these ‘optical’ clocks are usually the size of dining tables and operate well only under laboratory-controlled conditions.
Vector Atomic, an engineering firm based in Pleasanton, California, has created an optical clock that weighs only 26 kilograms and, including all its housing, takes up about the size of three shoe boxes. Although the firm’s clock is inferior to the best lab-based optical timekeepers, its precision is 1,000 times better than that of the similar sized clocks that ships currently use, says company co-founder Jamil Abo-Shaeer, a co-author of the study.
The team tested its system by placing three of the clocks aboard the Royal New Zealand Navy ship HMNZS Aotearoa during a three-week trip around the Hawaiian Islands. Despite the ship’s vibrations and rolling, the clocks performed almost as well as they had in the laboratory. They were notably stable, keeping time to within 300-trillionths of a second over a day.
Donley says this stability is similar to that of a hydrogen maser clock — a reliable kind of microwave atomic clock that is the workhorse for international timekeeping. But the clock is much more robust and around one tenth of the volume.
Fly me to the Moon
The clock’s robustness comes in part from its use of iodine molecules, which can be made to oscillate using compact and durable lasers of the type commonly used in labs. The molecules are also less sensitive than some atoms to temperature fluctuations, magnetic fields and pressure, says physicist Martin Boyd, a co-founder of Vector Atomic and co-author of the paper.
If the team can shrink the clock further, future models could fly aboard global navigation satellites, improving positioning resolution from metres to centimetres, adds Abo-Shaeer. They could even be the clocks that end up defining lunar time, he says.
Rambus Inc., a company with a long history in high-performance memory, has recently unveiled a new component that is set to improve memory performance in advanced servers. This new product, the Gen 4 DDR5 Registering Clock Driver (RCD), is particularly important for applications that handle a lot of data, such as generative AI. As the year draws to a close, top manufacturers of DDR5 memory modules have started to test this new RCD.
The Gen 4 DDR5 RCD from Rambus is impressive, with a data rate of 7200 MT/s, which is a significant jump from the 4800 MT/s rate of current DDR5 modules. This 50% increase in memory bandwidth is crucial for servers that need to manage the growing demands of today’s data center workloads. The new RCD is not just a temporary fix; it’s designed to support future server platforms, ensuring that Rambus products stay at the forefront of technology. This forward-thinking approach shows Rambus’s commitment to innovation and their ability to foresee the needs of the market.
Features of the DDR5 RCD
Supports data rates up to 7200 MT/s
Supports clock rates up to 3600 MHz
Supports double data rate (DDR) and single data rate (SDR) CA bus
Supports two independent subchannels per RDIMM
Supports two physical ranks per subchannel, four physical ranks total
Supports up to 16 logical ranks (per physical rank) for high capacity RDIMMs
Provides up to 4 clocks per subchannel: 1 clock per five devices
Low Power 1.1V VDD
5 MHz (max.) I3C bus interface
With over thirty years of experience in the field, Rambus’s expertise shines through in the development of the DDR5 RCD. Their knowledge in areas like signal and power integrity is vital for the performance and reliability of these memory interface chips, which are increasingly important for AI-driven server performance.
The move to a 7200 MT/s data rate and the resulting 50% increase in bandwidth is not just a technical upgrade; it paves the way for new computing possibilities. Servers that are equipped with this improved bandwidth can handle data more quickly and efficiently, which is a significant step forward for server technology.
Rambus’s Gen 4 DDR5 RCD is a direct answer to the changing needs of advanced data center workloads. As applications like generative AI push the boundaries of current technology, this RCD is well-equipped to tackle these new challenges.
The introduction of Rambus’s Gen 4 DDR5 RCD marks a key moment for server technology. With its superior data rates, increased memory bandwidth, and preparation for future server platforms, the RCD is essential for the performance and efficiency of the next generation of AI-driven servers. Rambus’s continuous innovation and deep expertise in memory interface technology place them as industry leaders, ready to address the challenges of an ever-evolving technological world.
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