Ever since the Harry Potter came up with the fantasy of an invisibility cloak, we were astonished and wanted it to be real. Guess what? Science actually made it real. Science with some skills, imagination and the stolen idea from a Harry Potter movie can lead to magical invention like this.
Scientists from the University of Rochester have invented the invisibility material which can camouflage with the background or other items. This material has actually not been made into a cloak yet because it is made of multiple lenses. This property was achieved with the help of a scientific phenomena called Multiple-Internal reflection. It basically consists of 4 lens with different and accurate focal lengths which give us the invisible effect while seeing through it.
Though this does not completely make things look invisible but almost invisible. Something is better than nothing, right? More interesting thing is the scientists also let out how they made it. Whaaat? I wouldn't do that. It's like giving away a million dollars. Just kidding here are the 4 steps that help you achieve the invisibility. Not completely, but to an extent.
1. Purchase two sets of two lenses with different focal lengths f1 and f2 (four lenses total, two with f1 focal length, and two with f2 focal length)
2. Separate the first two lenses by the sum of their focal lengths (So f1 lens is the first lens, f2 is the second lens, and they are separated by t1= f1+ f2).
3. Do the same in Step 2 for the other two lenses.
4. Separate the two sets by t2=2 f2 (f1+ f2) / (f1— f2) apart, so that the two f2 lenses are t2 apart
The scientists will further plan on how it blend it into a flexible material. that won't be a big deal i suppose. Hope this thing will hit the black markets soon ;).
If you have something to add to this magical story, leave in the comments!
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