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Joined: Jan 2003
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stranger
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OP
stranger
Joined: Jan 2003
Posts: 5 |
I am writing a poem, and need to know the authentic scientific phrase to express the optical effect that makes objects seen up close appear to double, as in the little sausage that appears when you hold your index fingers about an inch apart, an inch or so in front of your eyes. I have been using the term 'binocular parallax' because that is what I thought I remembered from Physics, but can no longer find reference to it, and have no confidence that is right. Upon learning the correct phrase, I'll post the poem (it's not long). Thanks.
davy jones
davy jones
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Joined: Jan 2002
Posts: 1,526
veteran
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veteran
Joined: Jan 2002
Posts: 1,526 |
Total conjecture on my part.
I'm not sure of the term you want. If you have two eye points located in different places (one on each side of a nose, for example), there will be binocular parallax (slight difference in image) to provide depth perception. This binocular parallax might cause the optical illusion you refer to (among others), but I suspect it's not the term for the illusion.
It's probably the same effect that makes an autostereogram work.
When I say "cause" in these cases, I'm talking about proximate cause. The actual illusion in each case is caused by some processing on the disparate images in the brain.
k
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Carpal Tunnel
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Carpal Tunnel
Joined: Jan 2001
Posts: 13,858 |
When a finger is held too close for images to be fused, diplopia results.
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Carpal Tunnel
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Carpal Tunnel
Joined: Dec 2000
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Carpal Tunnel
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Carpal Tunnel
Joined: Jan 2001
Posts: 13,858 |
I dunno, musick. It sounds to me like excrement hitting the pot.
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Carpal Tunnel
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Carpal Tunnel
Joined: Dec 2000
Posts: 2,661 |
'Sweet' in the rhythmic sense...
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Carpal Tunnel
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Carpal Tunnel
Joined: Jun 2001
Posts: 2,636 |
Yeah. The Ps give it a nice syncopation while the vowels move it along.
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old hand
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old hand
Joined: Feb 2002
Posts: 833 |
The Ps give it a nice syncopation while the vowels move it along.whereas, in Bill's reading of it, the P gives it a nice syncopation while the bowels move it along. 
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Pooh-Bah
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Pooh-Bah
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while the bowels move it along.Oh Gawd!
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