You can't prove the existence of another observer, adhering strictly to logic. You can choose to acknowledge them as observers, but you can't prove it (Descartes). Your senses can (and presumably have, if you dream or see an optical illusion ever) been deceived.

*ban

Sorry but you cant post your own yt videos on this site. As per posting guidelines.
http://videosift.com/faq#posting_guidelines
which you were warned about when you posted this video.

self link
http://videosift.com/video/Reversing-Arrow-Optical-Illusion#comment-1751383

The rotors can't be that slow moving right? Optical illusion with filming speed?

This is the same as calling an image through a magnifying glass an optical illusion. It's no more an optical illusion than the light bending through the lenses in your eyeballs.

Incidentally, this also has got nothing to do with the brain, and isn't art.

*nochannel

*Music
*Time Shift
*Water

I'm in total agreement with @MichaelL. Strictly speaking, this is definitely not an optical illusion by virtue of the fact that it is not an illusion.

You're just seeing objective reality the way nature is presenting it to the universe and the same way everyone else sees it. It would only be an optical illusion if it physically existed one way but your eyes/brain perceived it a different way.


It'd be like turning on a light in a dark room and declaring it an optical illusion that everything is illuminated because the photons from the light source are making everything look bright, but in reality it's all dark, so: optical illusion. "The room is being incorrectly perceived because it's actually dark, but you're perceiving it as bright."

Yeah, no.

From Wikipedia:
An optical illusion (also called a visual illusion) is characterized by visually perceived images that differ from objective reality.

That means when you stare at an object DIRECTLY, you are tricked into believing that it has different qualities than it does.

In this example, you aren't starting at the arrows... you are staring at a diffracted image of the arrows. The diffracted arrows REALLY do point in the opposite direction. There's no illusion here.

Consider this...

If I put a rose-tinted pane of glass in front of the arrows, would you consider that an optical illusion?

Would you think "Hey, those arrows were on white paper before, NOW the paper is pink! Mind blown! Optical illusion!'?

No, you understand that you are seeing the colour pink because that's the property of the pane of glass IN FRONT OF the white sheet.

If you put a white sheet in front of the arrows, would you think: "Hey, the arrows have disappeared? Optical illusion!"?

No, that's the property of the sheet in front of the arrows.

And so on...

Hopefully, that clarifies it for you...

WAIT A MINUTE--

Light BENDS when you look at it through water, especially water inside a cylindrical object???

I wouldn't have believed it if I hadn't seen this optical illusion in action.

Mind. Blown.

Next thing you'll tell me is magnets work through some kind of force other than magic.

Indeed, boo to anyone with a grasp of both the English language AND science.


Seriously, hoping your joking Ching, Mike's post was exactly my first thought watching the clip. Optical illusions are supposed to be things that trick your brain into misinterpreting a scene. In this case, the scene is being interpreted completely correctly, and the trick is in the physics, not in the brain. It's not a trivial or even obscure distinction to many.

Your video, Reversing Arrow Optical Illusion, has made it into the Top 15 New Videos listing. Congratulations on your achievement. For your contribution you have been awarded 1 Power Point.

Not really the definition of optical illusion... this is just a demo of the optical properties of water.

Tags for this video have been changed from 'beer, small, large, optical illusion, oakland, ballpark, baseball, cup, size' to 'beer, small, large, optical illusion, oakland, ballpark, cup, size, scam, rip off, volume' - edited by lucky760

Optical illusion, sadly. As noted up above, that little itty bitty top part is more than likely 4 oz. Considering the small cup is about to overflow (which you'd be ever so lucky to have them fill it that high mind you) and the large one isn't. Obviously, they are NOT the same volume. What they need to do is actually measure. I know, I'm going all weird and sciency here, but I'd wager that there's at least 2oz still to go.

Not to mention, where doe the manufacturer say 20oz is at? Is that small beer holding 18oz? or 16oz?

Plus, if you're buying beer at a game, you're getting ripped off in the first place. It's like people who buy iPhones for $400 but then complain when an app costs $1. Get over it.

Awesome optical illusions.

The behind-the-scenes is worth a look:
http://www.youtube.com/watch?v=ejXgE480R1I

That's my point. The brain channel isn't about you thinking a dog is amazing for thinking of something. There's a description of the channel, by the channel owner, which explains what the channel is for and when you should invoke it:

http://videosift.com/brain

"From the molecular biology of neurons to theories of consciousness, the Mind and Brain channel is devoted to workings of the brain and its emergent mind. All videos in this channel offer some insight into the workings of brains (organic or synthetic). Videos of trippy optical illusions and Derren Brown mind tricks are generally not acceptable - unless, of course, they contain some explanation of how the brain is being manipulated to produce the demonstrated results."

"The dog was smart to use its brain of doing that" doesn't fit. The same way so many of your channel assignments don't fit.

I'm sorry, but you really do need to look at what the channels are for because honestly you're just making a mess of the site with your constant throwing channel assignments out to the point where their meaning is lost.

Granted, some channels don't have good descriptions (which is why you tag every god damn thing that has a car in the background with wheels), but still, I hope you understand what I mean.

Congratulations! Your video, Eye - Optical illusion that causes natural hallucination, has reached the #1 spot in the current Top 15 New Videos listing. This is a very difficult thing to accomplish but you managed to pull it off. For your contribution you have been awarded 2 Power Points.

This achievement has earned you your "Golden One" Level 6 Badge!