A Cool Experiment
Put your palm (one hand please) on any one eye. I’ll presume you have put your right palm over your right eye throughout this article.
What you see is most amazing. What? What’s special in this? Well, you see : you can see some of the things behind your hand through our palm (the palm appears to be translucent) and some of the other things (on the extreme right) are blocked out by your hand. So, you have partial X-ray powers, don’t you?
Actually, unfortunately or fortunately, no. The reason the palm appears transparent is this:
Your right eye sees your palm and nothing else. Your left see the things on your left side and some things towards the right side, but not towards the extreme left. This is the phenomenon which gives us a 3-D image when none of our eyes are blocked. But the part where the right eye couldn’t have seen even if it was not blocked, the image appears normal and clear. The brain mixes the 2 images – one of palm and another of the things in front of you. But some part of both the images (the extreme left of palm and extreme right of things) overlaps. This creates a translucent image. The palm appears transparent and you can clearly see some of the things.
Note : If you find the reason too complex, you didn’t try as I had asked you to. Please try, otherwise you won’t understand.
We are intelligent animals (we really are, whatever you say, animals after all). Our brains are very intelligent. They can do these kinds of things, miraculous as they seem.
Now, I have an interesting question. But let me tell you, most 3-D cameras use 2 lenses to create a 3-D image, just as our brain uses 2 eyes. You may have already understood my question. If we put our palm (or any other obstacle – which is opaque) over any one of the lenses, and click a 3-D image in 3-D still picture view, what will be the resultant picture or image? It’s too complex a question to solve without trying it out. Different companies use different software for 3-D cameras. It all depends on the software what kind of image is formed. Will it be half-this and half-that, or similar to what you experienced? I urge you readers, those of you have a 3-D camera with 2 lenses, please try it out. Please send the 3-D image formed to firstname.lastname@example.org and I will feature the same on this blog with your name. And thanks for reading this article. Adieu.
Update – As an afterthought, I finally decided to write the technical terms. The part you can see clearly in this experiment is the yellow spot. The part you can’t see is the black spot.