Watch out for that Fireball!!

I was wasting my time over at Google Mars when I recollected the famous "Face on Mars". It attracted huge attention in 1976 when it was made public and which was put to rest in 2001 after more detailed photographs were published by the Mars Global Surveyor Spacecraft that it was just a plain landform, though the original caption explained it in plain terms that "is formed by shadows giving the illusion of eyes, nose and mouth."

I was lead to the photographs site where a 3D photo of the Face of Mars was given with instructions on how to view it in 3D,by means of a special eye glass, I immediately remembered the movie "My Dear Kutti Chaatan", a 3D movie in which we wore glasses to see the movie and had always wondered how it worked!! I immediately searched for it and was led to HowStuffWorks.

The technology used is really simple, it just makes one eye see a part of the image(which the other eye cant) and the other eye to see another part. The brain merges both and you get the illusion of a 3D image!! The simplest form in which this can be acheived is by having a red filter in one and a blue in the other, thus seeing only red in one eye and blue in the other, But modern 3d glasses use polarisation for better results and full colour!! It simple alright, but who would have thought of it?!! Hats off to the guy who invented(or discovered) it!!