Be Invisible now...Ask me how...

[Disclaimer : This is not an original thought.I read it in HT but i dont remember the name of the person who talked about this]

Ques.) How do you see an object ?
Ans.) Light rays coming from the source fall on the object and are deflected to your eyes. This enables you to see the object. Quite obvious, if there is no light, you don't see the object.

Now imagine if there is some thing that repels light rays.
So light coming from a light source instead of falling on the object are repelled away and they kind of pass the object circling around it without actually hitting it.

As you can see in the image. Assume light from some source falls on the green object and is deflected towards the red object. But since that red object repels light rays, the eye wil still see the green object. This means the RED OBJECT is INVISIBLE

This is somewhat like the mirage where light rays bend over and it seems that there is water ahead.

So if we are able to make this kind of material that repels light don't be amazed to see (actually not seeing) someone wearing clothes made of that material and standing right in front of your eyes but you still not being able to see him/her.
INVISIBLE he/she is.

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