Have you ever developed pictures and found circles perfectly shaped that are called orbs?
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I have heard they are caused by dust on the lens or water.  However, my daughter can't seem to have a pic taken of her without either orbs or long thin white smokey ribbons all around her.  Even though she is only 22, I call her an old soul.  She is a sensitive, meaning she can sense and feel things others can't.  I am the same way.  I believe these may be spirits around her.
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OMIGOSH! I just SAW one! Its called johnfrog!\nJust joking...LOL\nNah, i dn't think so, but maybe one day..
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There are actually 2 ways to see Magic Eye pictures (also called random dot stereograms).  One way is with your eyes crossed and the other is with them uncrossed, but I don't remember which way gives you which image.  It's usually easier for people to do it one way over the other.  And then there's people like me who have to work really hard to do either.
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http://www.aperfectcircle.com \na Perfect Circle
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If you are talking about the shape that you always see in cartoons, round at the bottom and coming to a point at the top, then it doesn't.\n\nThe raindrop shape is an invention of artists or whoever.  High speed photography shows that raindrops take the shape of flattened spheres due to air resistance.\n\nYou can read about it here: http://www.islandnet.com/~see/weather/history/lenard.htm
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I like circles because they symbolize unity and eternity to me.
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Yes.  For example, take the two from the top left corner, and the two from the bottom right corner, and make a new square touching the top right corner.\n\n\nAAAA BBBBB\nC.........D..........E\nC.........D..........E\nC.........D..........E\nFFFFFF GGGG\nH.........I............J\nH.........I............J\nH.........I............J\nKKKKK LLLLL\n\nbecomes\n . . . . . . . . . . . . . AAAA\n . . . . . . . . . . . . .C . . . . J\n . . . . . . . . . . . . .C . . . . J\n . . . . . . . . . . . . .C . . . . J\n. . . . . . .BBBBB LLLLL\n. .........D..........E\n. .........D..........E\n. .........D..........E\nFFFFFF GGGG\nH.........I\nH.........I\nH.........I\nKKKKK
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My son just did one for 4th grade.  He used Optical Illusions and their perception among age groups.  It turned out really cool.  We copied optical illusions from library books and pasted them up.  Then he made a stop-motion animation move on his computer, and explained how he did it.  He also made flip-books. It was cool.
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May be a Sphere/Circle of defined polygons or Trees.... with infinite edges and finite branching points....
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all the time, usely I can see the ghost's light orb. Never seen a human shaped ghost only, strange lights and voices.
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i saw a show once on these old mysterious structures. they had a map of the world and all of these structures were marked on the map. I couldn't believe what I saw… it formed a circle, actually two circles. The inner circle (dots) were exactly spaced between the dots of the upper circle.\n\nIt's hard to explain but what I saw was this... instead of drawing a circle around you would connect by going down then back up (like the letter V), down then back up, over and over again in a clockwise fashion. If you can envision what I am saying it turned out to be like a pie cut into several times…an arrow pointing to the middle!(no dot in the middle)\n\nI was screaming at the tv saying can't you see it, aren't you going to point it out? Nothing was said!!!\nI don't remember what show it was and I didn't have enough time to exactly see where it was pointing to.\nI wonder what mystery could be found in the center of that map?\n\nHas anyone else seen this????\n\nI just searched the web for an image to help visualy. looks something like the image in the link below.
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Oh no, you've figured out my hoax!!! You busted me, you're right, its not round. Sorry, I get silly sometimes. If you are at a position when the moon passes directly perpendicular to you relative to the sun's position then you will see a perfect half lit moon. you can simulate this with a big right triangle by taking a golf ball or some other ball and placing it at the  90 degree corner and placing a flashlight at one of the other corners pointing directly at the ball. Now line up your sight from the third corner and you should see a perfect half lit ball. :)
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I actually tried that back in 2004 by putting symbols like stars, circles and crosses, etc, on the corresponding colors. And, surprising to us students who did it as a school project, out of the 25 selected sight impaired persons between 12 and 45 years of age, about 7 of them solved it within 6 hours! Even more surprising was 12 others kept the cube as long as they needed. Conclusion: it's a great idea!
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Make a Dodecahedron. That's what I did.
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Yes it is called sunburst.  You can find the template in Adobe Photoshop.
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Many. They are called orreries. There is one on the internet too (see reference). The first reference has a picture of one at the Smithsonian. \n\nBefore the orrery, there was something similar called the armillary sphere, invented by Eratosthenes (aka spherical astrolabe, armilla, or armil).\n\nThe tellurian is similar to orrery. Sometimes an orrery was called a planetarium.
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Do a search on cropcircles........there's lots of stuff out there