Optical phenomena and 3D illusions

On this page you find a nice collection of geometric illusions and effects. There are pictures with strange depth and unusual perspective. Be impressed and watch on objects carefully, then decide which object is smaller and which is larger.

Which of the two glasses is half full? The left or the right one?

The right one is exactly half full! The volume illusion shown in this picture is called Frappé effect.

Both pins have exactly the same size

Which bowling pin is larger? The pin in the front or the pin far behind?

Which of the two red lines is shorter?

Hard to believe. But both lines have the same length.

Which of the red lines is the longest?

All three lines have the same length. Btw: The effect is called Müller-Lyer optical illusion.

Which of the two green balls is bigger? The left or the right one?

You guessed it? Both green balls are equal.

T-illusion: which of the two blue lines is longer?

Both blue lines of the T have exactly the same length.

Do you like the 3D illusions? Do you have feedback on the strange depth images? Please write a comment.

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