Black Lives Matter - Action and Equality.
0

Physicists say new World Cup soccer ball design has a big impact

NewImage

National Geographic has the story on the latest World Cup soccer ball design and how it will impact the game from a physics perspective.

Every year the newest version of the World Cup soccer ball causes a stir. Now physicists have put those balls to the test, to see just how well they fly.

World Cup soccer balls used to be not much different from regular soccer balls—32 leather panels stitched together by hand. But the balls used in World Cup tournaments have been distinctive since 2006, when Adidas unveiled the Teamgeist, made of just 14 panels that had been glued together rather than stitched. The company has been introducing new World Cup balls ever since: the eight-panel Jabulani ball in 2010 and for the 2014 games—which begin on June 12 in São Paulo, Brazil—the six-panel Brazuca.

Will this change in design make a difference in the game? That’s what Sungchan Hong and his colleagues at the University of Tsukuba wanted to find out. Making use of some soccer balls, a wind tunnel, and a robot, they found, according to today’s Scientific Reports, that a ball’s construction really does affect how it flies through the air.

What’s most relevant in a ball’s movement is drag, a force that makes it dip and curve in unexpected ways. The smoother the ball, the greater the drag at higher speeds—and with fewer panels that are glued rather than stitched together, the World Cup balls have been getting increasingly smoother.

Which is why this year the Brazuca ball is covered in little nubs—an attempt to cut down on the so-called knuckling effect, which causes the ball to move unpredictably through the air like a knuckleball in baseball.

In the wind tunnel, Hong found, the direction in which the ball is pointed, and thereby the direction in which the panels are oriented, changes the drag. This was a problem for the 8-panel Jabulani ball and the 14-panel Teamgeist ball, each of which traveled more unpredictably than a regular soccer ball, curving more or less depending on which way it was oriented.

But the new 6-panel Brazuca seems to be far more reliable, showing very little difference in behavior no matter how it’s rotated. This is likely due to the way the panels of the Brazuca are arranged, along with the rough surface Adidas added to cut down on the drag.

Read more.


We are angry, frustrated, and in pain because of the violence and murder of Black people by the police because of racism. We are in the fight AGAINST RACISM. George Floyd was murdered, his life stolen. The Adafruit teams have specific actions we’ve done, are doing, and will do together as a company and culture. We are asking the Adafruit community to get involved and share what you are doing. The Adafruit teams will not settle for a hash tag, a Tweet, or an icon change. We will work on real change, and that requires real action and real work together. That is what we will do each day, each month, each year – we will hold ourselves accountable and publish our collective efforts, partnerships, activism, donations, openly and publicly. Updates to this page will happen frequently. Our blog and social media platforms will be utilized in actionable ways. Specific actions each week noted and shared as part of our all-company “State of the Fruit” notes and all-company meeting. Join us and the anti-racist efforts working to end police brutality, reform the criminal justice system, and dismantle the many other forms of systemic racism at work in this country adafruit.com/blacklivesmatter

Stop breadboarding and soldering – start making immediately! Adafruit’s Circuit Playground is jam-packed with LEDs, sensors, buttons, alligator clip pads and more. Build projects with Circuit Playground in a few minutes with the drag-and-drop MakeCode programming site, learn computer science using the CS Discoveries class on code.org, jump into CircuitPython to learn Python and hardware together, TinyGO, or even use the Arduino IDE. Circuit Playground Express is the newest and best Circuit Playground board, with support for CircuitPython, MakeCode, and Arduino. It has a powerful processor, 10 NeoPixels, mini speaker, InfraRed receive and transmit, two buttons, a switch, 14 alligator clip pads, and lots of sensors: capacitive touch, IR proximity, temperature, light, motion and sound. A whole wide world of electronics and coding is waiting for you, and it fits in the palm of your hand.

Join 20,000+ makers on Adafruit’s Discord channels and be part of the community! http://adafru.it/discord

Have an amazing project to share? The Electronics Show and Tell is every Wednesday at 7:30pm ET! To join, head over to YouTube and check out the show’s live chat – we’ll post the link there.

Join us every Wednesday night at 8pm ET for Ask an Engineer!

Follow Adafruit on Instagram for top secret new products, behinds the scenes and more https://www.instagram.com/adafruit/

CircuitPython – The easiest way to program microcontrollers – CircuitPython.org


Maker Business — How 3M is able to ramp up production of N95 masks

Wearables — Grocery store assist

Electronics — Electrolytic Limitations

Biohacking — Vitamin-C + Gelatin for Accelerated Recovery

Python for Microcontrollers — Discord 20k, Summer of Making, Python 3.9 and more! #Python #Adafruit #CircuitPython @circuitpython @micropython @ThePSF

Adafruit IoT Monthly — Cosmo Clock, Low Powered Widlife Camera, and more!

Microsoft MakeCode — Arcade Mini Game in a Text Adventure

Get the only spam-free daily newsletter about wearables, running a "maker business", electronic tips and more! Subscribe at AdafruitDaily.com !



No Comments

No comments yet.

Sorry, the comment form is closed at this time.