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Post by Ally on Jun 13, 2009 9:55:42 GMT
Aw no, is this just my screwy eyes again?
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Post by tangent on Jun 14, 2009 3:26:05 GMT
Okay, I'm going to try and take a stab at this. If you lie down in the sun, you're "viewing" sunlight through your eyelids, which are a sort of red color thanks to the blood vessels in your eyelids. When you open your eyes... I'm not quite sure of the mechanics behind it, but the cones in your retina that measure the red colors are still registering false images. However, rather than register it as "pink" as you'd think, it goes for a different color on the spectrum. I've seen something similar for optical illusions on various websites. The sites will show a ring of circles, each of which will register one color, and rotating rapidly. When the color turns off, the nerves register a false image which will often appear green or blue. Okay, I found a Wiki site on the "Lilac chaser" illusion: en.wikipedia.org/wiki/Lilac_chaserThis is the basic phenomena you're speaking of.
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Post by Animae on Jun 14, 2009 6:21:22 GMT
And proves tim does not spend much time outside in fields laying down playing with the sun.
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Post by Ally on Jun 14, 2009 9:54:52 GMT
Thank you Tangent! That makes sense
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Post by stokerino on Jun 14, 2009 11:04:16 GMT
And yet is somehow different to the "everything appears kind of blue" idea that you had me fruitlessly investigating. ¬_¬
I mean hell, "your retina do crazy shit" seemed pretty self-explanatory, like how the after-image of looking at the sun goes red/blue/green/whatever colours it wants. I figured you were after something more weird and specific.
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Post by Ally on Jun 14, 2009 12:18:49 GMT
Not that different, I can see the connection. It might well have been something more weird and specific for all I knew - what I saw was a sort of general blue wash, rather than a specific point of colour, but since I hadn't been focusing on a point of light, it makes sense that my entire retina rather than just one part of it would be affected.
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Post by Emily on Jun 14, 2009 14:57:51 GMT
Art brain is queen here!
Okay so there are three primary colours(red yellow blue), and three secondary colurs( green purple yellow). From these you can create opposite pairs which consist of a primary colour and the secondary colour that doesn't contain that primary blue-orange red-green yellow-purple. Your eye has trouble coping with a pair of opposite colours at once. This means if you spent time looking at orangy-red light cast through your eyelids, your eye gets confused between the sudden amount of blue it's having to deal with when you open them and tells your brain everything IS blue, and your brain gradually corrects and adjusts the information it recieves, untill the proper colour balance is restored.
It's the same way your night vision gradually develops when you go out at night, at first you're blind, -it only takes your brain a few seconds to adjust the pupil size to let in maximum light, but it can then spend several hours making small changes to the way it interprets information in order to give you the best night vision.
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Post by Ally on Jun 14, 2009 22:12:20 GMT
Second question - why does yellow get to be a primary and a secondary colour? Getting a little too cocky there, yellow!
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Post by stokerino on Jun 14, 2009 22:22:54 GMT
Either Ms. Brady simply meant orange, or the extra yellow slipped in from additive to the subtractive colour model with the intent of taking over the spectrum.
Soon everything shall be yellow!
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Post by Emily on Jun 15, 2009 7:57:51 GMT
I meant to say orange....
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Post by Ally on Jun 15, 2009 12:53:49 GMT
Aw, I liked the idea of yellow trying to take over the world...#
Pacman and Boss Smiley would be behind it all.
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Post by geuzegirly on Jun 15, 2009 15:53:51 GMT
Isn#t this all to do with rods in your eyes and, as Em said, them not adjusting quickly?
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Post by Emily on Jun 15, 2009 18:03:44 GMT
and also the cones! the rods deal with greyscale, the cones deal with colour. Cons don't work in low light levels either, which is why you have trouble discerning colours in the dark!
And dogs only have rods which is why they see in back and white.
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Post by Ally on Jun 24, 2009 7:03:11 GMT
Tim (or anyone):
Has someone somewhere posted a full transcript of American McGee's Alice online? All I can find are the partial IMDB quotes, which are only a little bit useful. I've been Googling as cunningly as I can, but it keeps coming up with things like computer scripts and the like.
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Post by Emily on Jun 24, 2009 7:28:51 GMT
try the phrase "walkthrough" instead of script. that'll get you onto guides of how to play the game, defeat battles etc- script and plot should be included.
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Post by stokerino on Jun 24, 2009 7:51:34 GMT
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Post by Ally on Jun 24, 2009 18:01:07 GMT
Perfect! Thank you Tim!
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Post by Ally on Oct 28, 2009 14:46:58 GMT
War-related question for Tim:
That government policy during the Second World War, the one that had people painting out placenames so if anyone parachuted in they wouldn't know where they were - was that a sensible plan, or silly paranoia? I was just thinking, surely the Germans would have spent the pre-war years collecting good maps of Britain?
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Post by stokerino on Oct 28, 2009 15:31:38 GMT
Depends on how you look at it.
The idea is not so much that the German's would have good maps of Britain, but rather that they might not know where they are at the time. If a spy is dropped in under cover of darkness, even if he had a map he would not really know where he was - as he could have easily done something like aim for Buckinghamshire and landed in Bedfordshire, such were the inaccuracies of flying at night. He'd therefore be forced to interact with locals to gather bearings/ask directions and so increase chances of arousing suspicion and getting caught. It would also help a bit if a German invasion force actually landed, because even if each detachment did have their own map, it'd slow them down trying to follow it, and they still might end up going the wrong way (rather than simply following the big signs saying "LONDON >").
Of course, German agents and parachuted spies were all rounded up very quickly anyway, and an invasion never happened. It's easy to look back in hindsight and say "well, that didn't change much so it was probably more trouble than it was worth", but given that the threat of invasion was very real (for the summer of 1940 at least), absolutely anything that might conceivably help had to be considered a Good Idea.
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Post by Ally on Oct 28, 2009 19:41:41 GMT
Fair enough. I guess the morale boost was worth it
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