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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

Shirt off doing The Hulk - LoL!


141 posted on 06/22/2018 12:49:21 PM PDT by Berlin_Freeper (alea iacta est)
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To: Berlin_Freeper

FT: Serbia1-2 Switzerland


142 posted on 06/22/2018 12:53:40 PM PDT by Berlin_Freeper (alea iacta est)
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To: Berlin_Freeper
Group D GP W D L F A GD P
1CroatiaCRO 2 2 0 0 5 0 +5 6
2NigeriaNGA 2 1 0 1 2 2 0 3
3IcelandISL 2 0 1 1 1 3 -2 1
4ArgentinaARG 2 0 1 1 1 4 -3 1
Group E GP W D L F A GD P
1BrazilBRA 2 1 1 0 3 1 +2 4
2SwitzerlandSUI 2 1 1 0 3 2 +1 4
3SerbiaSRB 2 1 0 1 2 2 0 3
4Costa RicaCRC 2 0 0 2 0 3 -3 0

143 posted on 06/22/2018 1:03:05 PM PDT by Berlin_Freeper (alea iacta est)
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To: Berlin_Freeper

A grandaughter just got back from Serbia and Croatia-—amazing to see both in the finals.

.


144 posted on 06/22/2018 1:04:53 PM PDT by Mears
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To: Berlin_Freeper

Bungle In The Jungle
145 posted on 06/22/2018 1:06:09 PM PDT by Berlin_Freeper (alea iacta est)
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To: Mears

And doing well too!


146 posted on 06/22/2018 1:12:35 PM PDT by Berlin_Freeper (alea iacta est)
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To: Berlin_Freeper

Serbia should of had a penalty kick for that assault by 2 Swiss defenders. How is VAR not used for that?!?!?


147 posted on 06/22/2018 2:05:46 PM PDT by safeasthebanks ("The most rewarding part, was when he gave me my money!" - Dr. Nick)
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To: safeasthebanks

Serbia got screwed badly on that call. I’ve never seen a worse two-man tackle in a penalty area. There was no crowd of other players blocking his view. Didn’t even do a VAR check.

If FIFA is serious about controlling the muggings by defenders that go on in the penalty box, they need to send this ref home in order to send a message. An offensive player barely breaths on a defender and a foul is called.

Only one potential penalty kick has even been submitted for review even though FIFA directed the refs to make extensive use for it on potential penalty kicks or fouls by the attackers when goals are scored. FIFA even had a training session for the Refs that included numerous video examples of what and what should not be called.

My guess is that the refs have conspired to not use VAR as a protest to its use. Either that, or there is a lot of bribery going on.

I’ve watched most of the matches, and there are a lot of very questionable calls and non-calls.


148 posted on 06/22/2018 2:15:23 PM PDT by WASCWatch
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To: Berlin_Freeper

3 goals in the first 18 minutes of Belgium-Tunisia, now 4-1 Belgium, 81st minute.


149 posted on 06/23/2018 6:42:27 AM PDT by darkangel82
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To: Berlin_Freeper

FT: Belgium 5-2 Tunisia

FT: Mexico 2- 1 South Korea


150 posted on 06/23/2018 9:59:07 AM PDT by Berlin_Freeper (alea iacta est)
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To: Berlin_Freeper
FT: Mexico 2- 1 South Korea

¡Booooo....no me gusta!
151 posted on 06/23/2018 10:01:37 AM PDT by dfwgator (Endut! Hoch Hech!)
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To: Berlin_Freeper

Neymar on the verge of a nervous breakdown
http://www.marca.com/en/world-cup/2018/06/22/5b2d659a46163f813e8b45d9.html


152 posted on 06/23/2018 10:11:45 AM PDT by Berlin_Freeper (alea iacta est)
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To: Berlin_Freeper

https://www.independent.co.uk/sport/football/world-cup/world-cup-2018-argentina-lionel-messi-croatia-nigeria-iceland-qualify-a8410986.html


153 posted on 06/23/2018 10:14:10 AM PDT by Berlin_Freeper (alea iacta est)
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To: Berlin_Freeper

World Cup: Germany v Sweden - Ozil dropped
https://www.bbc.com/sport/live/football/43975456


154 posted on 06/23/2018 10:20:54 AM PDT by Berlin_Freeper (alea iacta est)
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To: Berlin_Freeper

Best Ozil Chant

https://www.youtube.com/watch?v=PWuhVpd2ohg


155 posted on 06/23/2018 10:22:39 AM PDT by dfwgator (Endut! Hoch Hech!)
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To: 1Old Pro

At the World Cup teams and their fans stand and sing their National Anthem at the too of their lungs. Puts American “football” to shame.


156 posted on 06/23/2018 10:58:15 AM PDT by weston (As far as I'm concerned, it's Christ or nothing)
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To: Berlin_Freeper

Germany better win this, because you know there will be a “Gentlemen’s Agreement” between Sweden and Mexico.


157 posted on 06/23/2018 11:29:09 AM PDT by dfwgator (Endut! Hoch Hech!)
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To: Berlin_Freeper

Oh My!


158 posted on 06/23/2018 11:32:09 AM PDT by dfwgator (Endut! Hoch Hech!)
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To: dfwgator

Bad Toni Kroos pass.

If you make 5 passes in the mid field you will lose the ball.

I appreciate what Löw did for Germany in the past but it is time for him to go.

HT: Germany 0-1 Sweden


159 posted on 06/23/2018 11:52:36 AM PDT by Berlin_Freeper (alea iacta est)
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To: Berlin_Freeper

It happens. All good things come to an end.

No finishers, like Klose and Podolski.


160 posted on 06/23/2018 11:55:46 AM PDT by dfwgator (Endut! Hoch Hech!)
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