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September 4, 2010

*twist*, *twist*

srikanth @ 11:59 pm, GMT +0000 ( 1283644740 ) Play

An image doing the rounds on the net. Someone (X) is using this to explain something (Y). Solve for X and Y.

Cracked by everyone.

Answer:

(X) – Dr Christophe Clanet
(Y) Brazilian Roberto Carlos’s so-called “impossible free-kick” in 1997


35 Responses to “*twist*, *twist*”

  1. Logik
    1
    5
    3

    Y – Roberto Carlos’s spiral shot.
    X – Christophe Clanet from the Ecole Polytechnique.

    http://www.bbc.co.uk/news/scie.....t-11153466


  2. SV
    1

    Dr Christophe Clanet explains Brazilian Roberto Carlos’s 1997 free-kick


  3. jowens
    13
    2

    Christophe Clanet and David Quere explained the path of Roberto Carlos’s 1997 goal against France (Tournoi de France).


  4. Dibyo
    11
    14
    10

    X = researchers ar Ecole Polytechnique in Paris
    Y = Roberto Carlos’ freekick in 1997


  5. byslexia

    French researchers recently tried to explain how the path of Roberto Carlos free-kick couldn’t have been expected by any goalkeeper unless he understood Corialis forces.


  6. Rogi
    48
    10
    5

    X = Ecole Polytechnique in Paris
    Y = Roberto Carlos’ 1997 “impossible” kick against Fabian Barthez.
    Just your basic curveball science.


  7. Raghuvansh
    1
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    4

    Roberto Carlos’ ‘impossible’ free kick.


  8. Bharath
    4
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    4

    Roberto carlos’ free kick
    Dr Clanet described this path as a “snail-shell shaped trajectory”, with the curvature increasing as the ball travels.
    Because Roberto Carlos was 35m (115ft) from the goal when he kicked the ball, more of this spiral trajectory was visible. So the apparently physics-defying sharp turn of the ball was actually following a naturally tightening curve.
    The French researchers looked at a famous free kick goal made by Brazilian player Roberto Carlos against the French team in the 1997 Tournoi de France.
    The crucial aspect of the wonder strike, according to the scientists, was the distance the ball had to travel to beat Fabian Barthez.

    X-Dr Clanet and his colleague David Quere
    Y- roberto carlos’ free kick


  9. X-Roberto Carlos
    Y-His famous free-kick at the Tournoi De France in 1997


  10. krudebox
    1

    The French research team from the École Polytechnique in Palaiseau used Roberto Carlos’ free kick to demonstrate the Magnus Effect


  11. Vinay Nair Karath

    Roberto Carlos and Fabien Barthez are the blanked out part of the picture. This is the explanation of Roberto Carlos “impossible” free kick. The person researching this is Cristophe Clanet.


  12. Manish Achuth
    16
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    Roberto Carlos’s magic free kick against France.


  13. udupendra
    4
    4
    7

    A bunch of French physicists explaining Roberto Carlos’s famous ’97 free kick against France


  14. Brazilian Roberto Carlos’s 1997 free-kick against France curved so sharply that it left goalkeeper Fabian Barthez standing still and looking puzzled.
    Physicists explain the ‘impossible’ goal


  15. X- Christoph Clanet
    Y- Roberto Carlos

    The incident: Carlos’ ‘magical’ free kick against France in 1997.


  16. Vishnu

    The Magnus effect as explained by some french scientists using the legendary roberto carlos free kick as an example…


  17. shrik
    10
    7
    9

    X – French team of scientists from Ecole Polytechnique
    Y – Roberto Carlos’ wonder-goal from a free kick spot in 1998


  18. X = A team of French Physicists. Chris Clanet, to be exact
    Y = That famous Roberto Carlos’ free-kick against France


  19. lanu
    1

    Dr Clanet(X) explaining the wonder goal of Roberto Carlos’s 1997 free-kick against France (Y). He described the goal path as a “snail-shell shaped trajectory”, with the curvature increasing as the ball travels.


  20. Christophe Clanet and David Quere explaining Brazilian Roberto Carlos’s 1997 free-kick against Franc (snail-shell shaped trajectory)


  21. dineshk
    4
    3
    2

    Roberto Carlos free kick.


  22. justajester

    Roberto Carlos’ free kick wonder goal against France in 1997 explained by physicists


  23. Roberto Carlos’s “impossible” free kick vs. France which curved like a banana into the net in 1997. How it was done was revealed in the New Journal of Physics.


  24. Anonymous

    goal of roberto carlos in 3rd june 1997 vs france..fabien barthez was found dumb stuct…..diz unbeleivable goal is scientifiacally proved and it is no more a magic gaol…


  25. Sumanth Patlolla
    27
    8
    7

    The vicious ‘spiralling’ swerve imparted on the ball by Brazilian full-back Roberto Carlos.
    Professors Christophe Clanet and David Quere at the Polytechnic School in Palaiseau Cedex near Paris have finally laid the argument to rest by computing the trajectory and deciding it was all down to a phenomenon known as the ‘spinning ball spiral’


  26. Ananth
    4
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    Exponential spirals used to explain Roberto Carlos’s free kick


  27. Bheema V

    Roberto Carlo’s ultralong distance freekick goal in 97 as explained by French Physicists.


  28. username
    3
    3
    1

    http://www.unitedzone.info/gen.....cists.html


  29. roberto carlos’s free kick against france


  30. Qbrain
    1

    “The goal that defied physics”.
    X –> Dr Christophe Clanet
    Y –> Brazilian Roberto Carlos’s 1997 free kick against France.

    The kick curved so sharply that it left goalkeeper Fabian Barthez standing still and looking puzzled.


  31. x–dr clanet
    y–‘snail shell shaped trajectory'(the curvature increases as the ball travels)


  32. Niranjan G

    Dr. Christophe Clanet explaining the physics behind the world’s greatest free kick taken by Roberto Carlos in a match b/w Brazil and France in 1997


  33. Qbrain
    1

    “The goal that defied physics”.
    X –> Dr Christophe Clanet
    Y –> Brazilian Roberto Carlos’s 1997 free kick against France.

    The kick curved so sharply that it left goalkeeper Fabian Barthez standing still and looking puzzled.


  34. Xanda

    X – Physicists at Ecole Polytechnique in Paris
    Y – Roberto Carlos’ super awesome goal that beat Fabian Barthez in 1997.


  35. Rahul Rajeev

    X = Dr Christophe Clanet
    Y = Roberto Carlos’ free kick against France


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