EquisDeXD Posted October 3, 2012 Share Posted October 3, 2012 (edited) There are 5 different people in the same vicinity who all know that each other person is observing them. Each person has a different color marked on their forehead which they do not know the color of but that every other person can see. If any person sees three blue marks, they are to stand up. And, if anyone knows the color on their forehead, they raise they're hand. The person who raises their hand first wins the prize. The people cannot intentionally communicate which each other in any way and the person running the test does not communicate with any person in any way. Shortly after the timer starts, 3 people stand up, but shortly after that, one person raises their hand. How does this person know which color they have? Just remember what Einstein is famous for. Edited October 3, 2012 by EquisDeXD Link to comment Share on other sites More sharing options...
sammy7 Posted October 6, 2012 Share Posted October 6, 2012 Hey Each person has a different color marked on their forehead which they do not know the color of but that every other person can see. If any person sees three blue marks, So 5 people, 5 different colours, but someone may be able to see 3 blue marks???? Link to comment Share on other sites More sharing options...
EquisDeXD Posted October 6, 2012 Author Share Posted October 6, 2012 (edited) Hey So 5 people, 5 different colours, but someone may be able to see 3 blue marks???? Yep. I'll give you a hint: the frequency of light is relative. Edited October 6, 2012 by EquisDeXD Link to comment Share on other sites More sharing options...
sammy7 Posted October 6, 2012 Share Posted October 6, 2012 Yep. I'll give you a hint: the frequency of light is relative. Ah k, yeh was thinking things like blue shift/red shift. Will go again. Link to comment Share on other sites More sharing options...
TimeSpaceLightForce Posted October 22, 2012 Share Posted October 22, 2012 (edited) Not Einstein's Solution: Using LED markers instead of paints Pixel colors : Red Green Blue Blue is present : White = [RGB]__Blue = [__ B]____ Cyan = [_GB]___ Magenta=[R_ B] Blue is absent : Black = [___ ]__ Red = [R__]_____Green = [_G_] ___Yellow = [RG ] time ______________position__________________________event --------------------------------------------------------------------------------------------------------------------------------------------------------------- t:1_____________ ((o)) start buzzer____________________ sound travels t:2 _______________________________________________3 nearest participants hears it t:3___ _[Cyan]_____ [White] ______[Magenta]____simultaneity of standing[C][W][M] / observes it t:4 _______________________________________________ raise his hand t:5_______________________________________________ [C][W][M] raise their hands t:6_______________________________________________&[Y] hears the signal t:7 __________[ Blue] _________ [Yellow]________________ stands [Y] stays (seeing 4 not 3) ----------------------------------------------------------------------------------------------------------------------------------------------------------------------- [blue] doubt his marks to be Blue/Green/Red/Black but will raise hand immediately if one with the blue mark moves. He is famous for his quotes? "I never think of the future.. it comes soon enough." -Dr.Einstein Edited October 22, 2012 by TimeSpaceLightForce Link to comment Share on other sites More sharing options...
einsteincorner Posted July 6, 2013 Share Posted July 6, 2013 How's that even possible? 5 diff people 5 diff colours Still they see 3 blue marks Are we discussing something with the rudiments of photometry? Or are these people with different visions What exactly are they wearing on their heads! :-/ If its einstein's puzzle Then there can't be any LED's We dint have them then Link to comment Share on other sites More sharing options...
ydoaPs Posted July 6, 2013 Share Posted July 6, 2013 It seems that this mangled version of the Blue Eye problem doesn't give enough information. Link to comment Share on other sites More sharing options...
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