Leave-Me-Alone box

Here's a machine that effectively does 'nothing'. Well, you flip a switch and the machine flips it back.




Read more about it here. You can even order one- it would make a nice gift, maybe for an office-mate.

Optical Illusions

This is not a spiral. They are a concentric circles. (Try and trace them with your mouse pointer!)



A set of horizontal straight parallel lines.


A and B are the same color. (Go ahead and try to pick the color in Paint/Gimp or a similar tool!).


The white triangle is not actaully drawn. Its just an illusion.

A and B are the same size. Notice how the left edges are not aligned along the same vertical.


Diagonal straight parallel lines.
The two orange circles of the same size. This is more like Gullivers travels. A human is a dwarf in a land of giants and, a giant in a land of dwarfs. It's all relative.




For detailed explanations of the above illusions and for some more illusions, see here