What's this illusion called? The full moon is rising, but has not yet cleared the horizon. The bottom of the moon, however, appears concave, its outer edges bending up from the horizon. (Image link inside illustrating this concept). [more inside]
posted by jrchaplin
on Apr 14, 2014 -
People often put on a 'funny voice' or accent for emphasis or just in general conversation. This is possibly a reaction to their company but possibly some kind of psychological obfuscation?
Does askmetafilter know of any any research into the way people put on funny voices for emphasis when they say things? Accents and intonations etc.
Google has not been kind to finding ideas or starting points.
posted by debord
on Feb 2, 2014 -
Last night I experienced a strange optical disturbance/illusion/vision problem. What's that all about, and should I be concerned? [more inside]
posted by anonymous
on Jan 31, 2014 -
and this hypnotic diagram
reminded me of a science fiction short story premised around the idea that breakthroughs in psychology and applied mathematics had made it possible to design two-dimensional black and white images that would produce extreme effects in anyone who looked at them. The result was a society in perpetual counter-terrorism lockdown. An image like "The Parrot" could cause immediate seizures and fatal strokes, and one terrorist sneaking a placard of it into the Superbowl could not only kill everyone in his immediate area but also viewers at home. Our main characters in the story are tweens who attend a school with translucent windows. They've gotten their hands on a low-powered nausea-inducing image and they've formed a secret club to take turns looking at it. Where can I find this story? [more inside]
posted by justsomebodythatyouusedtoknow
on Oct 28, 2013 -
Can you help me find instructions for a magic trick or illusion that involves 2 or more ropes going through a large tube? (I believe the ropes are linked by washers inside, and so by discreet pinching, the user can produce baffling effects when a mark pulls on a rope.) [more inside]
posted by chr1sb0y
on Dec 3, 2011 -
Are there any optical illusions that give the illusion of motion / general tripy-ness on a computer monitor at 32x32 pixels? [more inside]
posted by nathancaswell
on Mar 18, 2010 -
What's the name of that illusion (if that's the right word) where you think you came up with an idea but you actually heard it from someone else previously?
posted by palet
on Feb 3, 2010 -
What are some magic tricks that are simple to make/do for an indoor cabaret? [more inside]
posted by divabat
on Jan 18, 2010 -
What acoustical phenomena explain the apparent pitch-shifted echo I heard while observing tonight's fireworks display? [more inside]
posted by Songdog
on Jul 4, 2009 -
I'm directing a play that calls for an actor to be tarred and feathered on stage. It's a powerful moment, and I'd love to do it. But ... how? [more inside]
posted by minervous
on Sep 3, 2008 -
When I look at an image (on my LCD computer screen) that is composed of a combination of solid colors separated by black borders, I perceive the colors as appearing on different planes of depth, as if the image were three-dimensional. If I close either eye, the illusion collapses. Am I the only one affected by this, or is it a consequence of the way LCDs display color? [more inside]
posted by pmbuko
on Apr 25, 2007 -
Is there any sort of recognised optical illusion or visual deficit that can make it hard to realize that a vehicle is stationary? [more inside]
posted by anonymous
on Oct 16, 2006 -
My bathroom has mirrored walls instead of tiles. When I look at myself in one wall/mirror, I seem slightly shorter and wider than I seem in the other mirror, creating the illusion of a 5 lb difference in my appearance. Is there a way to figure out which mirror (if either) is accurate?
posted by xo
on Feb 11, 2005 -
In around 1986/87 (+/- two years), I saw an edition of The Last Resort
with Jonathan Ross (failed UK attempt to copy the Letterman chat show format). One of his guests that night was a freakish guy, possibly French, who swallowed things and then extracted them through his stomach. So, he'd swallow some string, then stick a skewer or something through his stomach wall, and hook out the string. Yes, it was that disgusting.
1. Was this real or an illusion? From what I can remember, there were close-ups and it didn't look like it was being faked.
2. Who was
posted by humuhumu
on Dec 2, 2004 -