While the thought of getting a cool invisibility cloak just like the one we saw in Harry Potter are some things loads of folks would love, it may become a reality very shortly. A Canadian company has created material as skinny as paper that literally makes the items behind it ‘invisible.
A company known as Hyper stealth was able to make The latest invisible tech, referred to as Quantum stealth, Hyper stealth is a Canadian camouflage design company. The material is as skinny as paper, cheap, and it doesn’t require a power supply. However it doesn’t work quite still as a supernatural cloak, yet it does a reasonable job of concealing and is actually confusing to look at.
This material can bend light in a way that only things at a certain distance can be seen. The material has quite the wide range capability and is able to bend light from mid- and near-ultraviolet to the infrared. Given the lower resolution of cameras that work outside the visible light spectrum, the effect becomes more strong and remarkable when the material is seen through it.
The material does not get interfered by the colors of what it’s trying to conceal but it does distort the background. Therefore it’s not a magical invisibility cloak; It is possible to see that something is hidden behind the shield but won’t be able to see the details clearly.
The technology begins to develop by Hyperstealth’s Guy Cramer back in 2010, and since then he’s been affiliated with military organizations to improve it. He recently filed four patents on this and related technologies and published a series of videos on how it works.
While the details are definitely under wraps, the physics is surprisingly clear. The principle is known as Snell’s law. Every material has a specific refractive index, a quantity related to the speed of light in that material compared to the speed of light in a vacuum.
You are able to see effect easily. As a spoon in a glass of water appears like it is bent. The same effect makes pools appear shallower than they are. When light moves between two materials, the angle at which it is moving will change depending on the refractive index. So if we are smart with materials it is possible to build something that has a blindspot. And that’s where the invisibility happens.