Thursday, October 29, 2009

Illusions

1. Hering Illusion
-The optical illusion behind the lines would distort the lines and make them look crooked or curved. Then when you remove the illusion the lines were straight.
-I was surprised to discover that the lines were all straight.
-I don't know how my perception works now. It is very weird what this activity proved.
-I could not see straight lines sign or something to that nature is there's a type of illusion behind it.

2. Mueller-Lyer Illusion
-There is an arrow with a pointed out end and a pointed in end. There is a arrow in the middle and you have to find the middle of the 2 arrows.
-I was surprised to find that the arrow points confused me into thinking that they were evenly apart.
-I couldn't even find the middle of a line.
-When drawing a line in geometry maybe.

3. Spoke Illusion
-There are spokes and a color wheel from white to dark gray. The color wheel is turning while the spokes stay put.
-On my first look, I thought that the spokes were going counter clockwise and the color was going clockwise. But on closer inspection, I saw that the spokes stayed put!
-Well I was happy to get one right, but I think color can affect the way we see things.
-Maybe lights could make us dizzy.

4. Stepping Feet Illusion
-There are vertical lines and then to horizontal blocks going through the lines.
-It looked as though the blocks were stepping onto the horizontal lines but when the horizontal lines are removed they are going the same speed.
-I felt this was another weird optical illusion. The lines made it looked like the were stepping.
-This could effect a speeding test.

5. Sine Illusion
-There i s a sine wave with vertical black bars. All the bars are the same size.
-When I saw it I thought that they were not all the same, but they were.
-I found that the size was misjudged because of the curves in the sine wave.
-This could be used in any of the tests of vision.

6. Hidden Bird
-There is a bird that flies around behind a bunch of lines. When you stop the bird, it disappears.
-I found this to be true, when you stop the bird it disappears.
-I think this illusion could be like the clouds.
-Used for toddlers vision tests.

7. Pyramid Illusion
-When there are many squares, an oblique light cross, like a large ‘X’, appears. This cross does not really exist.
-I thought the X existed, but it does not.
-I now think that our vision has different ways to percieve everything.
-In eye tests.

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