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Cool Illusions

Started by Locutus, August 19, 2012, 06:37:54 PM

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Locutus

August 19, 2012, 06:37:54 PM
Continuing my mathematical thoughts from the Skywatch thread, I thought about some fun things coming from the realm of recreational mathematics.  One of those topics is illusions.  I'm going to post a few of the more interesting ones that I've found, and please feel free to post some of your own.

The first one here is a Ouchi Illusion which is named for its Japanese inventor.  In it, the central disk appears to float as the eyes move around the image.   :biggrin:

One of the gravest dangers to the survival of our republic is an ignorant electorate routinely feeding at the trough of propaganda.   -- Locutus

"We are all connected; To each other, biologically. To the earth, chemically. To the rest of the universe atomically."  -- Dr. Neil deGrasse Tyson

Locutus

#1
August 19, 2012, 06:40:11 PM
Another one is the Penrose stairway.  You keep climbing, but never get any higher.

One of the gravest dangers to the survival of our republic is an ignorant electorate routinely feeding at the trough of propaganda.   -- Locutus

"We are all connected; To each other, biologically. To the earth, chemically. To the rest of the universe atomically."  -- Dr. Neil deGrasse Tyson

Locutus

#2
August 19, 2012, 06:44:33 PM
And in sticking with Penrose for a moment, here's the Penrose triangle:

One of the gravest dangers to the survival of our republic is an ignorant electorate routinely feeding at the trough of propaganda.   -- Locutus

"We are all connected; To each other, biologically. To the earth, chemically. To the rest of the universe atomically."  -- Dr. Neil deGrasse Tyson

Locutus

#3
August 19, 2012, 06:52:29 PM
The Impossible Torus

One of the gravest dangers to the survival of our republic is an ignorant electorate routinely feeding at the trough of propaganda.   -- Locutus

"We are all connected; To each other, biologically. To the earth, chemically. To the rest of the universe atomically."  -- Dr. Neil deGrasse Tyson

Locutus

#4
August 19, 2012, 06:59:13 PM
The Schroder Staircase.  Do you see stairs going up from left to right, or an upside down staircase?

One of the gravest dangers to the survival of our republic is an ignorant electorate routinely feeding at the trough of propaganda.   -- Locutus

"We are all connected; To each other, biologically. To the earth, chemically. To the rest of the universe atomically."  -- Dr. Neil deGrasse Tyson

Locutus

#5
August 19, 2012, 07:27:52 PM
Is this a duck looking left, or a rabbit looking right?

One of the gravest dangers to the survival of our republic is an ignorant electorate routinely feeding at the trough of propaganda.   -- Locutus

"We are all connected; To each other, biologically. To the earth, chemically. To the rest of the universe atomically."  -- Dr. Neil deGrasse Tyson

Y

#6
August 28, 2012, 03:50:31 PM
Quote from: Locutus on August 19, 2012, 06:40:11 PM
Another one is the Penrose stairway.  You keep climbing, but never get any higher.



I couldn't quickly find the specific Escher artwork I was looking for, but this is one somewhat like your post - that post and others reminded me of Escher's work of which I am a big fan:

©  Whamma-Jamma - all rights reserved

Law of Logical Argument - Anything is possible if you don't know what you are talking about.  ;)

"You've probably noticed that opinion pollsters go out of their way to include as many morons as possible in surveys ... I think it's dangerous to inform morons about what their fellow morons are thinking. It only reinforces their opinions. And the one thing worse than a moron with an opinion is lots of them." -- Scott Adams

In other words: Never underestimate the power of stupid people in large groups.  ;)

"It is difficult to get a man to understand something when his salary depends upon his not understanding it." -- Upton Sinclair

"Hitler is gone, but if the majority of our fellow citizens are more susceptible to the slogans of fear and race hatred than to those of peaceful accommodation and mutual respect among human beings, our political liberties remain at the mercy of any eloquent and unscrupulous demagogue." -- S. I. Hayakawa
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