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 Ilaezha   |
Okay. You know when you push on your eyes when they are closed (but not too hard), you see the little swirls and stuff? There is also a little black circle, and when you move your eyes about, the black circle follows the movement of your eyes. Does anyone know what that is and what it is called? |
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 ChiChi234 |
Ummm... ew. >.< Why don't you consult Wikipedia.org? Eem Angry! Eem hit next poster! |
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 Data  |
Okay, here we go! When you're pushing on your eyes, the rod and cone cells (the ones that detect light & send a signal to your brain to say what colour it was there) mis-fire because they're being squashed. That's the random dots you see. Now, inside your eye, there's a spot where your optic nerve connects (to get those signals to your brain!) and so there's no room for the rods & cones left. That place in your eye is effectively blind so is called a blind spot. There are no cells there to signal light so you wont get any random dots. Oh, and you dont get a big black spot with your eyes open because 1) you have two eyes and 2) your brain is constantly flickering your eyes to compensate Back again! Beware! |
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Ilaezha |
Wow. Data, your username is certainly accurate, it seems! I had always wondered why your eyes did that. And now I know why! But what did you mean by "your brain is constantly flickering your eyes to compensate"? |
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 Julia |
i have always wondered what that was  |
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Data |
If I remember this correctly, your eyes are lower resolution than it seems. If you've ever heard of "super-sampling" that's how we turn everything into such "high resolution". Like taking a million photos all at very tiny different angles and adding them all together to form a super-high definition image. To do that your eyes are moving constantly, but the movement is too small to detect when looking at someone else. Hope you follow that. That's just what I remember, anyway! For all I know, a better explanation may be out there by now. It doesn't *completely* cancel your blind spot though - because you can test for it by closing one eye and focusing on an object in the distance, then moving something small and close around your face until it seems to vanish. A dot underneath a line on a page is the most common - slide the page left-right and at one point the dot disappears! But you can't be watching the page, you have to look past it & not move your eye. Back again! Beware! |
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Ilaezha |
That's amazing. I just thought I'd ask. Thanks! OK, but what about watching the dot? Do you have to have one eye open while watching it and one eye closed? |
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Data |
One eye closed, the other looking at, say, a corner of the window on the other side of the room. The dot on the paper right in front of you will disappear when it reaches your blind spot Back again! Beware! |
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 awmanman |
There is also when you look at a bright light and close your eyes, that burns the image into your eyes for a second or two, and you can see a yellow/greeny glow where you saw the light. Nine times have I been told im crazy and ten times I have accepted it. |
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 Symia |
Might I perhaps remind you that Creaturescaves is not usually used as a homework help site?  |
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awmanman |
Might I perhaps remind you that this is the Strangeo section witch is anything about anything?  Nine times have I been told im crazy and ten times I have accepted it. |
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Symia |
...anyways, I never really stopped to notice these eyeball things. |
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Ilaezha |
It's not for homework, I just wanted to know, actually |
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Symia |
Well, I'm not sure how yout think up these questions. |
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Ilaezha |
Yes, well I am.  |
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 Tea Queen Laura Administrator |
I think topics like these make a nice change from all the forum games, myself. I'd like to see them pop up more often. |
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Data |
It's fun to learn stuff, too. And good for you. Hey did you know that solar flares cause system crashes because as each ray from the flare passes through your CPU it has a chance of flipping the state of a transistor which messes with whatever it's meant to do? As CPUs get more complex, the size of transistors shrink to fewer & fewer atoms, making it easier for the rays to flip them. Hence - Solar Flares == more crashes Back again! Beware! |
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KC11 |
Hence: Global Warming= Me screaming more at my computer. I had to say that. Did you know that if you put a cat in a box, then put in a possibility of a situation where the cat can be dead, then closed the box, the cat is both alive and dead? Only when the box is opened can both realities become one reality. Do not upset the ugly worm, lest it be a dragon in disguise. (>oo)> |
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Data |
quantum physics Schroedinger's Cat http://www.galactic-guide.com/articles/8R56.html The experiment is set up so that two conditions are true: 1. if the radioactive mineral decays it will release the gas in some way and thus kill the cat, and 2. there is a 50/50 chance of the mineral decaying in the limited time the experiment takes up. Back again! Beware! |
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Tea Queen Laura Administrator |
Topic title changed to 'Interesting Facts' |
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Symia |
Ya, although "Eyeballs" was plenty discriptive, I'm not sure it was, erm, how should I put it? Interesting... |
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 Wup |
O.O Ummm....okay... ps. I haven't played Monster Raannnrrrnnchhdoggy |
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Tea Queen Laura Administrator |
Hey, please don't post if you haven't got anything constructive or relevant to add to this topic. |
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