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How the new World Cup ball was designed to not influence the games
popular science ^ | June 18, 2018 | Dyani Sabin

Posted on 06/19/2018 10:41:19 AM PDT by Berlin_Freeper

Every four years there’s a new ball for the World Cup—and every four years players are unhappy with it. Maybe it’s too light and has too much lift, like the 2002 Fevernova. Or maybe it wobbles unexpectedly in the air, making it harder for goalies to predict its motion, like the 2006 Teamgist. Or maybe the ball suddenly changes speed, dropping out of the air and causing accidental handballs, like the 2010 Jabulani.

At the World Cup level, these tiny changes in a ball’s aerodynamics can legitimately impact a team’s performance, so the intense scrutiny of the World Cup ball is perhaps to be expected. “You could argue that it’s the most important piece of equipment in the most popular sport in the world,” says John Eric Goff, Professor of Physics at University of Lynchburg.

Adidas designs every World Cup ball, and on top of being a big seller for them, engineers at the company are constantly a little closer to the perfect ball, Goff says. The ideal soccer ball is a pimple-covered, perfect sphere, its surface just subtly textured enough to keep the airflow around the ball slightly turbulent. Unintuitive as this might sound, the ridges and pimples on the ball make it more aerodynamic, helping the ball to fly through the air more stably.

The Telstar 18, the design for the 2018 World Cup in Russia, is as close to a perfect sphere as you can get.

(Excerpt) Read more at popsci.com ...


TOPICS: Science; Sports
KEYWORDS: soccer; worldcup2018
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To: Berlin_Freeper

The Biter scored while I was having dinner and that inspired me to eat more.

HT: Uruguay 1-0 Saudi Arabia


61 posted on 06/20/2018 8:46:39 AM PDT by Berlin_Freeper (alea iacta est)
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To: Berlin_Freeper

Minute 75 still Uruguay 1-0 Saudi Arabia

Livin’ On The Edge
https://youtu.be/7nqcL0mjMjw


62 posted on 06/20/2018 9:33:02 AM PDT by Berlin_Freeper (alea iacta est)
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To: Berlin_Freeper

My 8yo daughter just entered the room and asked if number 6 has bitten anyone. I told her his number is 9 and no, he hasn’t bitten anyone because he scored a goal and is winning 1-0. She said: Oooooh.

I told her the other day about Suarez.


63 posted on 06/20/2018 9:49:24 AM PDT by Berlin_Freeper (alea iacta est)
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To: Berlin_Freeper

Another 1-0 result but Uruguay win the all important 3 points and that’s what matters most.

FT: Uruguay 1-0 Saudi Arabia


64 posted on 06/20/2018 9:53:41 AM PDT by Berlin_Freeper (alea iacta est)
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To: Berlin_Freeper

WOW!

HT: Iran 0-0 Spain

(you can have yourself a proooobleeem)


65 posted on 06/20/2018 11:50:23 AM PDT by Berlin_Freeper (alea iacta est)
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To: Berlin_Freeper

I am surprised Ramos hasn’t crippled an Iranian, yet.


66 posted on 06/20/2018 11:52:28 AM PDT by Berlin_Freeper (alea iacta est)
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To: Berlin_Freeper

“He bites who he wants!”

https://www.youtube.com/watch?v=neWQ49RPQIw


67 posted on 06/20/2018 11:54:20 AM PDT by dfwgator (Endut! Hoch Hech!)
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To: dfwgator

Another single goal game, all three today. Amazing considering the match-ups.

FT: Iran 0-1 Spain


68 posted on 06/20/2018 12:56:19 PM PDT by Berlin_Freeper (alea iacta est)
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To: Berlin_Freeper
Group A GP W D L F A GD P
1RussiaRUS 2 2 0 0 8 1 +7 6
2UruguayURU 2 2 0 0 2 0 +2 6
3EgyptEGY 2 0 0 2 1 4 -3 0
4Saudi ArabiaKSA 2 0 0 2 0 6 -6 0
Group B GP W D L F A GD P
1PortugalPOR 2 1 1 0 4 3 +1 4
2SpainESP 2 1 1 0 4 3 +1 4
3IranIRN 2 1 0 1 1 1 0 3
4MoroccoMAR 2 0 0 2 0 2 -2 0

69 posted on 06/20/2018 12:59:25 PM PDT by Berlin_Freeper (alea iacta est)
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To: Berlin_Freeper
Rode my bicycle this morning and took pictures. Mostly of the Russian WW2 Monument. I figure let me visit there since the World Cup is in Russia and this was like only the fourth time I visited inside the place in 10+ years we been living here (although I passed it many times).

Sorry I don't have time for blurbs so here they are:
photo 1
photo 2
photo 3
photo 4

photo 5
photo 6
photo 7
photo 8
photo 9
photo 10
photo 11
photo 12
photo 13
photo 14
photo 15
photo 16
photo 17

70 posted on 06/21/2018 5:10:00 AM PDT by Berlin_Freeper (alea iacta est)
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To: Berlin_Freeper

Denmark 1-0 Australia

I missed the goal posting photos.


71 posted on 06/21/2018 5:14:06 AM PDT by Berlin_Freeper (alea iacta est)
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To: Berlin_Freeper

My 55 inch HDTV is both my TV and computer screen.


72 posted on 06/21/2018 5:15:22 AM PDT by Berlin_Freeper (alea iacta est)
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To: Berlin_Freeper

Denmark was nearly standing still with the ball since they are a goal up - LoL!

Don’t you hate when the other team do that?


73 posted on 06/21/2018 5:18:22 AM PDT by Berlin_Freeper (alea iacta est)
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To: Berlin_Freeper

Now I am posting on my large iPad, btw.

I need the desktop computer to post links to photos better even though it is on the fritz. I already upgraded the thing twice and am loath to spend another euro on it. Best to save for a new one. I don’t believe in buying on credit.


74 posted on 06/21/2018 5:23:08 AM PDT by Berlin_Freeper (alea iacta est)
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To: Berlin_Freeper

PK for Australia 1-1

Didn’t look like a foul but the arm did move out for contact.


75 posted on 06/21/2018 5:38:45 AM PDT by Berlin_Freeper (alea iacta est)
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To: Berlin_Freeper

That, for me, is a classic example of the hand ball/no hand ball conundrum:

Yes, the ball clearly hit his arm BUT it also (for me) clearly wasn’t intentional (as he didn’t have time to move his arm out of the way after the ball came off the Aussie head), BUT he did have his arm well out away from his body, BUT he was contesting/jumping for a head ball and the arms kind of naturally come up for that action BUT he was in the penalty area and it was at least a possible goal scoring situation that his arm clearly interfered with....

Final judgment (for me) - Penalty kick was correct to give. No yellow should have been given though.


76 posted on 06/21/2018 5:57:51 AM PDT by safeasthebanks ("The most rewarding part, was when he gave me my money!" - Dr. Nick)
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To: safeasthebanks

Well thought out.


77 posted on 06/21/2018 6:51:24 AM PDT by Berlin_Freeper (alea iacta est)
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To: Berlin_Freeper

FT: Denmark 1-1 Australia


78 posted on 06/21/2018 6:52:41 AM PDT by Berlin_Freeper (alea iacta est)
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To: Berlin_Freeper

England manager Gareth Southgate dislocates shoulder
https://www.bbc.com/sport/football/44555599


79 posted on 06/21/2018 8:27:27 AM PDT by Berlin_Freeper (alea iacta est)
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To: Berlin_Freeper

Super goal by France!

France 1-0 Peru


80 posted on 06/21/2018 8:35:03 AM PDT by Berlin_Freeper (alea iacta est)
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