Physics lover

05/01/2025

https://physicsworld.com/a/physics-world-reveals-its-top-10-breakthroughs-of-the-year-for-2023/

A universe in a BEC, a double slit in time and supersonic cracks are on our list, with the overall winner unveiled on 14 December

05/01/2025

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14/02/2023

14/01/2017

مزید پڑھئے : https://www.express.pk/story/707970/

20/11/2016

16/07/2013

Several teams from 88 countries had joined the event. Amir Zareh, Mohammad Reza Lotfinamin and Kousha Rezaeizadeh won gold medals. Nader Mosta'an grabbed silver medal and Amirparsa Zivari scored bronze medal in the event.

It is expected that the Iranian team would be ranked 3rd or 4th in the event which ran on July 8-14.

Iran won 2 silver and 3 bronze medals in the 43rd International Physics Olympiad.

The International Physics Olympiad (IPhO) is an annual physics competition for high school students. It is one of the International Science Olympiads. The first IPhO was held in Warsaw, Poland in 1967.

Each national delegation is made up of at most five student competitors plus two leaders, selected on a national level. Observers may also accompany a national team. The students compete as individuals, and must sit for intensive theoretical and laboratory examinations. For their efforts the students can be awarded gold, silver, or bronze medals or an honorable mention.

The theoretical examination lasts 5 hours and consists of three questions. Usually these questions involve more than one part. The practical examination may consist of one laboratory examination of five hours, or two, which together take up the full five hours.

09/07/2013

Physics lover see Letter sent By 7 years old Dexter to NASA and reply of NASA to him .............

09/07/2013

This Is What Happens When A 7-Year-Old Asks NASA How To Get To Mars....
A seven-year-old boy named Dexter wrote this very adorable letter asking NASA how he could get to Mars.!

Dear NASA,
My name is Dexter. I heard that you are sending two people to Mars and I would like to come but I’m seven and a half and I can’t. I would like to come in the future, what do I need to do to come an astronaut.
Thank you,
Dexter

07/07/2013

Physics explains how Shane Warne bowled the ‘Ball of the Century’
Behind such deliveries lie some powerful principles of physic

The Robinson brothers said their paper was motivated by an interest in physics “and a long love of sport” – and insisted its timing just ahead of the Ashes series, starting on July 10, was purely coincidental.

“The effects… are probably very well known to class spin bowlers, so we are not attempting to tell them what they already know,” they wrote.

07/07/2013

The Physics Behind waterslides

A visitor shoots down a water slide in the re-purposed National Aquatics Center, also known as the Water Cube, in Beijing, China.

How Water Parks Work..????

"A water park is the same thing as any other system out there," points out Eric Martell, an assistant professor of physics and astronomy at Millikin University. (He studies particle physics and quantum statistics by day, and takes his three young children to water parks on weekends.)

"You start out at the top of the waterslide at rest," he explains. "And then you have some forces acting on you which cause you to accelerate, which means a change in velocity."

He lists the forces acting on riders on a waterslide: gravity, of course, but also the friction between your body and the slide (or the tube you're on and the slide) and how the water interacts with the slide itself.

"Water acts as a lubricant between you and the slide," he says. "But it also pushes you along like a river. And everything that happens to you on a waterslide, it's because of the forces of gravity and friction and the force coming from the interactions between the water and the slide."

That's true for straight sections of a slide, but on a serpentine slide—which whips riders back and forth along curves—there's something else to keep in mind. It's called inertia, and it's the resistance your body has to changing its speed. In other words, each time you reach a curve on a serpentine slide, your body tries to keep going forward. (But if it did, you'd plunge over the edge of the slide.)

"That's why the waterslide has curved sides," says Martell. "Your inertia is trying to take you through the waterslide and out. But instead, you go up the sides of the slides. That's one of the things that has to be figured in—how people of all body types go up the slides."