Colour blindness and ball selection

Discussion in 'Resources, Equipment, Signals' started by Spunko, Sep 16, 2008.

  1. EccyThump

    EccyThump FHF Regular Player

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    Someone at our club has a nice black ball (complete with little sparkles in it). It's actually quite good but obviously not used for games.
     
  2. Spunko

    Spunko Guest

    We once took a "glow-in-the-dark" ball on a hockey tour. To say it was a health and safety nightmare was an understatement!
     
  3. philthy

    philthy FHF All Time Great

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    One of the kids has a light blue glittery one...
    Now that took me by surprise when it appeared halfway through a drill as it was connecting with my head!
     
  4. Snoody

    Snoody FHF All Time Great

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    No worries, Red - sackcloth and ashes in the post to you... ;)

    And I have some spare for you, Deegum, if you'd like... :p
     
  5. redumpire

    redumpire FHF All Time Great
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    They have post? In Guernsey?
     
  6. Snoody

    Snoody FHF All Time Great

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    Our donkeys can swim.
     
  7. g9

    g9 FHF Legend

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    Have seen the sparkle balls but horrible tie dye is the ball of choice for younger kids here. One of my keepers had a coach a few years back that made them call out the colour of the ball as it was being fired at her, the tie dye ones she could never figure out what colour to call.

    [​IMG]
     
  8. redumpire

    redumpire FHF All Time Great
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    But can your pigs fly?
     
  9. philthy

    philthy FHF All Time Great

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    of course they can red

    Guernsey's a mythical fabulous place where anything can happen so long as you want it enough :yes:

    They have dragons too
     
  10. NicfromSweden

    NicfromSweden FHF All Time Great
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    on the Hockey England yellow indoorfloor they said the optimal colour of ball was pink so we played with pink balls during the whole European Indoor Nations Championship in Sheffield
     
  11. justin-old

    justin-old FHF Legend

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    That conjures-up a rather unsavoury vision, Nic :eek:

    But seriously, squash-ball technologists have come up with a ball which shows-up well under artificial light....could hockey not do the same for use under lights? ...... say, something like reflective patches in the dimples?

    They'd probably have a short 'life' ... apart from getting nicked!
     
  12. Neo

    Neo Technical Moderator

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    Getting back to the original post... did you notice David's note about it only affecting men (colour blindness that is! it is gene linked)

    Ball visibility is enhanced by contrast - whilst for most of us red/green is a colour contrast, it is not for colour blind people.

    The other contrast is in brightness (think of no colour) yellow is a very bright colour, and flourescent colours also have a high brightness level.
    Assuming that the pitch is a dark green (low brightness) a white ball is one of the best contrasts against the pitch. Player uniforms / pads / protective
    gear tends to be dark too, so a white/bright ball can be picked out against the player/equipment background.
    As you have seen in the image posted in this thread, the theory breaks down when you are playing on a sand-dressed pitch that has been over dressed with
    a very light coloured sand. (Green sand anyone?)

    Having adequate levels of artificial light does make a difference too.
     
  13. RushMan

    RushMan FHF All Time Great

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    Water based pitch - Normally Green - use a white ball

    Sand based pitch - which appears white - use an orange ball
    - which appears green - use a white ball

    - under lights I find an orange ball stands out more

    Hybrid pitch - Normally Green - use a white ball
     
  14. controller

    controller FHF Legend

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    And as I said earlier, Common Sense until the player tells you he/she is colour blind.?
     
  15. Grumpy

    Grumpy FHF Legend

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    What happens if one or other players either cannot see the white ball and some cannot the orange ball. Match abandoned or as i was told a long time ago do not select players who cannot see a ball underlights.
    The only thing to do is cancel the match as it could happen that both teams will have players affected with the white and the orange ball not being suitable.
    Thoughts Red and Controller.
     
  16. redumpire

    redumpire FHF All Time Great
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    Grumpy I can't think of any reason why only a handful of players wouldn't be able to see a white ball when all the others could... Help?
     
  17. Bulsara

    Bulsara FHF Regular Player

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    Is white not the absence of colour and therefore you would not be effected by colour blindness? If it is just a difficulty seeing the ball because of the lights then unless it was dangerous get on with the game as it is the same for both teams.
     
  18. g9

    g9 FHF Legend

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    no, white is the presence of all colour, hence when white light is separated through a prism, you get the ROYGBIV spectrum.
     
  19. philthy

    philthy FHF All Time Great

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    I guess if you had a sandy pitch which looked white (so white ball's out) and were playing under lights which can, for some people, make it hard to see the orange ball...

    But to be honest, I can't see any league authority accepting that as a reason to not fulfil a fixture!!!
     
  20. Snoody

    Snoody FHF All Time Great

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    Part of the problem here seems to be the colour of the floodlights.
    I'm fine spotting an orange ball against our sand-based pitch in daylight, but as soon as the lights come on, I struggle.
    Maybe the bulbs need to be more blue-white (make sense?) rather than the yellowy ones they currently are.

    Any thoughts?
     

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