Invisibility shields are becoming more common and are almost fully functional.
From HG Wells’ invisibility potion to Harry Potter’s cloak, man has been dreaming of disappearing for centuries. Until now it was just a fantasy, but little by little it is becoming reality.
Three years ago, we introduced the first invisibility shield from Canadian company Hyperstealth Corporation. Now he’s perfected it to make it more real and “transparent”.
This shield uses a material called Quantum Stealth, That it makes everything behind it invisible. It’s not perfect as it blurs the background a bit and you have to hide the object right in the middle of the invisibility shield, but it really works. You can see it in this video:
The big advantage of Quantum Stealth is that: does not require any form of energy, It is the material with which it is made that makes what is immediately behind invisiblebut not the farthest bottom.
How does this invisibility panel work? It is based on the classic lenticular lenses. You’ve probably seen the 3D effect that some book covers have, or some DVD or Blu-ray movie covers, which generate a 3D image when you look at it from the front, and it flattens when you look at it from the front. sides.
East invisibility shield changes the light according to the parameters of the Snell’s Lawwhich calculates the angle of refraction of light as it passes through the interface between two media.
Every object has a refractive index of light and we see it differently when the light passes through air, or another medium like water. It’s a simple effect to check: if we put a spoon in a glass of water, we see the spoon bent. In addition, its shape changes depending on where we look from.
Hyperstealth has used all of these concepts to create a material that bends light and you can create blind spots at a certain distance from the invisibility shield. Therefore, it makes invisible what is very close to the shield, but not what is further away.
It is not the only company working on this technology. Invisibility Shield Co presented another invisibility panel a few months ago that works in a similar way, although it is even more perfect. You can see it here:
It is for sale by the way. on Kickstarter. A small shield of 30 x 20 cm to hide objects costs about 57 euros, while a shield to hide a person, 95 by 65 cm, goes up to 350 euros.
It is not a perfect solution, but it does have its uses in military camouflage, scientific studies of wildlife, privacy, etc.
