Sábado, 00:45. El vecino de arriba pone la música tan alta que las ventanas vibran. Subo, llamo a la puerta y le digo que hay gente intentando dormir. Me responde:
"Estoy en mi casa. Puedo hacer lo que quiera."
No discuto. Solo le hago una pregunta...
#Atención | Desde este martes aplican descuentos de hasta 80% en el recibo del agua para usuarios de colonias afectadas por la mala calidad del servicio.
El SIAPA definirá las colonias beneficiadas con base en el listado de la CEDHJ.
En 1982, un estudio de animación francés que soñaba con conquistar la televisión de Estados Unidos se puso a fabricar un personaje a medida para lograrlo. Crearon un detective cyborg tan torpe que nunca resolvería un caso y al que llamaron Inspector Gadget. Tira del hilo 🧵👇🏽👇🏽👇🏽
Así lució la Ciudad de México hace 45 largos años! Se trata de un filme de 1980, cuando la capital tuvo solamente 8.8 millones de habitantes, cuando gobernaba José López Portillo y el regente capitalino era Carlos Hank González. En 1980 se fundó la Orquestación Filarmónica de la Ciudad de México, y en dicho año se aplicó el IVA a nivel nacional con un 10%. También se inauguró el Tren Ligero de la capital! Qué belleza de ciudad, sin la sobrepoblación, el ambulantaje, la inseguridad! En aquel año el éxito musical fue la canción que escuchas de Rocío Durcal y Juan Gabriel. Noten los jardines en el zócalo capitalino, así como el paseo por el Castillo de Chapultepec, Palacio de Minería, Museo de Antropología, Museo de Arte Moderno y más. Qué otros detalles llaman tu atención? Notaste el Museo de la Charrería?
A los 40 años, Vozinha pasó de ser la gran historia del Mundial a firmar el mejor contrato de su carrera con Colo Colo.
El portero de Cabo Verde ganará 11 veces más que en su anterior club, el Chaves de Portugal.
Vozinha se vistió de gala y lloró a mares. Maravillosa historia.
🇦🇹 ¡GÁNATE UN PASE DOBLE Y VIVE UNA EXPERIENCIA ROJIBLANCA! 😍
👇🏻 Sigue estos pasos y participa:
1️⃣ Dale ❤️ y 🔄 a esta publicación.
2️⃣ Etiqueta a tu acompañante y dinos por qué crees que deberías ganar 👀
*los ganadores serán elegidos al azar
Este es un hilo que quiero hacer desdehace días pero ahora es el momento. LAS MEJORES PORTADAS DEL METRO EN EL MUNDIAL. Sentido del humor mexicano al máximo jaja. Arrancamos con esta joya. No es sólo la nota principal, es el recuadro también.
Hay ciudades que recibieron la Copa Mundial de la FIFA 2026™, pero aquí decidimos VIVIRLA.
GRACIAS, GUADALAJARA 💚🤍❤️
#SomosGuadalajara#Somos26#FIFAWorldCup
بعد 67 عامًا أعاد Google إحياء الهدف الذي وصفه بيليه بأنه الأجمل في مسيرته والهدف المسجل عام 1959 لم توثقه الكاميرات لذا أُعيد بناؤه بالذكاء الاصطناعي اعتمادًا على 3600 صورة أرشيفية إلى جانب شهادات وذكريات عائلة بيليه وأصدقائه
In 1997, a footballer accidentally proved a physics principle in a soccer game that had been invisible for 300 years.
Roberto Carlos lined up for a free kick about 40 yards from goal during a France versus Brazil friendly match in Paris.
The ball sat exactly where a free kick should sit, the French wall stood between him and the goal, and everyone in the stadium knew what was about to happen. Carlos was about to attempt something that shouldn't exist in physics.
He struck the ball with his left foot at an extreme angle, nearly perpendicular to where the goal actually was. The ball curved so dramatically through the air that French goalkeeper Fabien Barthez literally didn't move. He watched it arc impossibly wide, certain it was going nowhere, his body language screaming "that's out." Then the ball bent back toward goal like it was magnetized. It crossed the goal line before Barthez could process what his eyes had just witnessed. Goal.
The stadium went silent for a second.
Then chaos.
That moment became legendary not because it was a beautiful goal, though it was, but because it revealed something about physics that most people had never actually *seen* in real time before. The ball had broken the straight line. It had obeyed a force that existed entirely in the air, invisible to the naked eye, bending space itself through sheer rotation.
That force is called the Magnus effect, and it's been hiding in plain sight in sports for over a century. Every curveball in baseball, every spinning tennis serve, every banana kick in football, every slice shot in golf. They all ride on the Magnus effect. But Carlos's free kick was different. It was the perfect storm of velocity, spin rate, and distance that made the force so visually obvious that even people who'd never heard the word "Magnus" understood something supernatural had just occurred.
Here's what actually happened in the physics.
When you strike a spinning ball with enough velocity through the air, the rotation creates a pressure differential on either side of the ball. The side spinning with the direction of motion builds up a layer of fast moving air that stays attached to the ball's surface. The opposite side spinning against the direction of motion sheds that air layer and creates lower pressure. You end up with higher pressure on one side and lower pressure on the other. Bernoulli's principle then drags the ball toward the lower pressure region. The ball curves.
That's the Magnus effect in its purest form.
It's fluid dynamics.
But here's where most explanations stop and where most people fail to grasp the real picture. The Magnus effect is *proportional* to the spin. Double the spin rate and you approximately double the curvature. But it's also proportional to the surface area. A larger ball, all else equal, experiences more Magnus effect than a smaller one. And it's wildly proportional to velocity. Lower the speed too much and the curve becomes almost nonexistent. Add speed and the curve amplifies. This is why a baseball pitcher's curveball becomes more dramatic at higher velocities, why a tennis serve curves more than a lob, and why Carlos's free kick had to travel at a certain speed to work.
Carlos struck that ball at precisely the intersection point where spin and velocity aligned to produce maximum curve over that distance. Any slower and it lands straight in the wall. Any faster and it overcorrects and misses wide. The goal was practically a mathematical solution to an equation nobody needed to solve except his foot somehow did it perfectly.
The reason this moment matters beyond football is that it made visible something that had been operating invisibly in physics and engineering for centuries. The Magnus effect powers helicopter rotors. It's why airplanes have wings. It's why you can throw a frisbee and it actually stays airborne instead of just dropping like a stone. Every spinning object moving through air experiences it. Every sport that uses a ball depends on it.
Yet most people go their entire lives without consciously recognizing this force exists.
What Carlos did was compress a century of physics education into three seconds of visible reality. He created an experiment that couldn't be ignored or dismissed or explained away. The ball curved. The goalkeeper saw it. The universe didn't change. Nothing magical happened. Just matter responding to force across empty space in exactly the way the math predicted.
The interesting part isn't that it worked. The interesting part is that we'd organized the entire sport of football for decades without truly understanding why the ball did what it did. Strikers had developed intuition about how to make a ball curve, but that intuition was operating in the dark. They couldn't articulate the relationship between spin and speed and distance. They just knew that if you hit it a certain way, it would curve a certain amount.
Then Carlos made it visible.
What happened after was instructive. Within a few years, every serious free kick taker started studying the Magnus effect. Sports scientists began measuring spin rates with new technology. Training programs started including tutorials on precisely where to strike the ball, how much curve you could generate at different velocities, how wind affected the trajectory. The gap between top tier free kick takers and everyone else widened because now you could *understand* the phenomenon you were trying to exploit.
Science doesn't change physics. It just brings the invisible into focus.
That free kick lived in the gap between intuitive mastery and conscious understanding. Carlos had mastered the Magnus effect through pure repetition and feel. But once everyone else saw it work that clearly, you couldn't claim ignorance anymore. You had to reckon with what was actually happening in the air.
In some sense, that's what every great demonstration does. It takes something that was operating beneath the surface of our attention and makes it unavoidable. The double slit experiment did that for quantum mechanics. The Michelson Morley experiment did it for the aether. A free kick did it for aerodynamics, and most of the world never even realized they were watching physics.
The next time you watch a free kick curve perfectly into goal, understand that you're watching the Magnus effect in action. You're watching air pressure differentials, Bernoulli principles, and rotational velocity align perfectly. You're watching physics become soccer.
And somewhere, a physicist is probably jealous that a football player got to make it look more beautiful than any equation ever could.
@sashajrr Aunque pongas aranceles tu moneda vale 100 veces menos que la mexicana, tu salario mínimo es la mitad del de México pero tienes una inflación 10 veces mayor, crees que todo es futbol y Messi, ve a darle de mordidas a tus copas del mundo que nosotros si comemos 3 veces al dia.