We’ve seen the invisible gateways like the one to platform 9 and 3/4 in Harry Potter, but surely that’s not possible in real life, right? Wrong! A new theory scientists are developing could mean that such sci/fi special effects we see in the cinema could become a reality in the future.
“Using a technique known as transformation optics, the researchers have revealed a way to alter the pathway of light waves that could eventually allow them to create portals that are invisible to the human eye.
Pushing the laws of refraction and reflection to the limit, the team from Hong Kong University and Fudan University in Shanghai, describe the concept of a “a gateway that can block electromagnetic waves but that allows the passage of other entities”.
The gateway uses transformation optics and a “superscatterer” made from photonic crystals to create an ‘optical illusion’, forcing light and other forms of electromagnetic radiation into complicated directions to hide the portal.”
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