Post by thread:[OT] Subliminal messages

Jinx wrote: > 'splain please > > http://www.subliminalmessages.com/p17f.htm The first way to order the pieces (red triangle left bottom, blue one right top, yellow piece on top of the green one) seems to fill exactly the big triangle. The second way (red triangle right top, blue one left bottom, yellow shape to the side of the green one) seems to fill the same big triangle but leaving one square uncovered. The whole trick is in seeing that the angles of the red and blue triangles are not the same. In the first way to put the pieces, the long side of this triangle is bent downwards, in the second way it's bent upwards -- the difference being exactly one square. Gerhard

Russell, On Wed, 19 Jan 2005 19:58:17 +1300, Russell McMahon wrote: > Many optical illusions > > http://www.subliminalmessages.com/p1b.htm Good fun! > The page you enter at is for me the best of the ones I saw. ...but P17 is doing my head in - I've been trying to work out what's happening, but I've drawn a blank. Ho *is* it possible? :-) Cheers, Howard Winter St.Albans, England

>-----Original Message----- >From: spam_OUTpiclist-bouncesTakeThisOuTmit.edu [.....piclist-bouncesKILLspam@spam@mit.edu] >Sent: 19 January 2005 07:29 >To: Microcontroller discussion list - Public. >Subject: Re: [OT] Subliminal messages > > >'splain please > >http://www.subliminalmessages.com/p17f.htm Take a look at the non-animated version at http://www.subliminalmessages.com/p17.htm Notice that the location where the orange piece ends up is actually slightly less than two squares high in the top picture. The difference is made up by using a thicker black line in the lower picture. In the animation the orange piece is lowered very slowly into place so it's difficult to see whats happening. Cheers Mike ======================================================================= This e-mail is intended for the person it is addressed to only. The information contained in it may be confidential and/or protected by law. If you are not the intended recipient of this message, you must not make any use of this information, or copy or show it to any person. Please contact us immediately to tell us that you have received this e-mail, and return the original to us. Any use, forwarding, printing or copying of this message is strictly prohibited. No part of this message can be considered a request for goods or services. =======================================================================

The difference is in the slope of the hypotonuse of the two triangles. Cheers...Mike. ----- Original Message ----- From: "Howard Winter" <HDRWKILLspamH2Org.demon.co.uk> To: "Microcontroller discussion list - Public." <.....piclistKILLspam.....MIT.EDU> Sent: Wednesday, January 19, 2005 9:33 AM Subject: Re: [OT] Subliminal messages {Quote hidden}> Russell, > > On Wed, 19 Jan 2005 19:58:17 +1300, Russell McMahon > wrote: > > > Many optical illusions > > > > http://www.subliminalmessages.com/p1b.htm > > Good fun! > > > The page you enter at is for me the best of the ones I > saw. > > ...but P17 is doing my head in - I've been trying to > work out what's happening, but I've drawn a blank. Ho > *is* it possible? :-) > > Cheers, > > > Howard Winter > St.Albans, England > > > --

When it's over, place the mouse curser over replay, then watch the top (hypotenuse) line, near the center, while you click replay. You'll notice it moves in the middle. If you watch the animation you'll see it move after the second triangle moves out of place. The 'hypotenuse' is not straight in either case - this is a four sided figure, not a triangle. It just looks like that because the angles are so similar. When the triangle pieces are moved the outline changes shape. -Adam Jinx wrote: >'splain please > >http://www.subliminalmessages.com/p17f.htm > > >

part 1 598 bytes content-type:text/plain; (decoded 7bit) > Take a look at the non-animated version at > http://www.subliminalmessages.com/p17.htm > > Notice that the location where the orange piece ends up is > actually slightly less than two squares high in the top picture. > The difference is made up by using a thicker black line in the > lower picture. > > In the animation the orange piece is lowered very slowly into > place so it's difficult to see whats happening. Copy / paste with this image. OK to within a couple of pixels. There really is a square less, no drawing tricks part 2 2847 bytes content-type:image/gif; (decode) part 3 35 bytes content-type:text/plain; charset="us-ascii" (decoded 7bit)

{Quote hidden}>-----Original Message----- >From: EraseMEpiclist-bouncesspam_OUTTakeThisOuTmit.edu [piclist-bouncesspam_OUTmit.edu] >Sent: 21 January 2005 08:20 >To: Microcontroller discussion list - Public. >Subject: Re: [OT] Subliminal messages > > >> Take a look at the non-animated version at >> http://www.subliminalmessages.com/p17.htm >> >> Notice that the location where the orange piece ends up is actually >> slightly less than two squares high in the top picture. The >difference >> is made up by using a thicker black line in the lower picture. >> >> In the animation the orange piece is lowered very slowly >into place so >> it's difficult to see whats happening. > >Copy / paste with this image. OK to within a couple of pixels. >There really is a square less, no drawing tricks > That couple of pixels over the length of the piece in question actually adds up to the area of the square. Mike ======================================================================= This e-mail is intended for the person it is addressed to only. The information contained in it may be confidential and/or protected by law. If you are not the intended recipient of this message, you must not make any use of this information, or copy or show it to any person. Please contact us immediately to tell us that you have received this e-mail, and return the original to us. Any use, forwarding, printing or copying of this message is strictly prohibited. No part of this message can be considered a request for goods or services. =======================================================================

Seriously, folks, are we scientists/engineers or squirming schoolkids who are uncomfortable with having had a quarter pulled from our collective ear? Print out the (non-animated) page on your local laser printer, cut out the pre-shuffled one and lay it over the post-shuffled one. If you place the pieces over their appropriate match, they fit just fine, but placed in their original positions, there is a definite upward bowing of the hypotenuse. Or, put it another way, take a straightedge and connect the two non-right angle points. You'll note that the line isn't straight. Mike H. http://www.subliminalmessages.com/p17.htm

But you'll notice, depending on how accurately you cut and fit that either the first triangle doesn't exactly fit the outline, or the second triangle doesn't exactly fit the triangle. You can do this mathematically (or even use a program to count pixels if you want) to show that the outside triangle formed by the first arrangment is smaller than the outside triangle formed by the second arrangement. There are versions floating around that are laid out on a grid and you can more easily see the change. -Adam Jinx wrote: {Quote hidden}>>Take a look at the non-animated version at >>http://www.subliminalmessages.com/p17.htm >> >>Notice that the location where the orange piece ends up is >>actually slightly less than two squares high in the top picture. >>The difference is made up by using a thicker black line in the >>lower picture. >> >>In the animation the orange piece is lowered very slowly into >>place so it's difficult to see whats happening. >> >> > >Copy / paste with this image. OK to within a couple of pixels. >There really is a square less, no drawing tricks > > > > ------------------------------------------------------------------------ >

Mike Hord writes: > Seriously, folks, are we scientists/engineers or squirming schoolkids > who are uncomfortable with having had a quarter pulled from our > collective ear? > > Print out the (non-animated) page on your local laser printer, cut out > the pre-shuffled one and lay it over the post-shuffled one. If you > place the pieces over their appropriate match, they fit just fine, but > placed in their original positions, there is a definite upward bowing > of the hypotenuse. > > Or, put it another way, take a straightedge and connect the two > non-right angle points. You'll note that the line isn't straight. <sarcasm> Alternatively, you could look up the formula to calculate the area of a triangle. </sarcasm> This one is *very* old, and from the 15 seconds I spent looking at the animation, I think it either cheats and warps the shape of the triangles or the difference is obscured by the line thickness. And seriously, the problem becomes obvious when you look at it mathematically. -p.