Metamaterials Make Transparent Humans Come True?
Do you know why mirages occur?
Let’s take a look at the unfamiliar word ”metamaterial”.
A mirage occurs when light passes from a cold place to a hot place.
As light passes through different substances, it changes direction of travel.
This is called “refraction of light”.
Your eyesight works well because your retina uses refraction of light.
If there is no light in the eye, we cannot see anything.
For example, let’s say you have a person in front of you right now.
If you divert all the light coming from behind the person and put it in your eyes, you will not be able to see the person.
By applying this refraction of light, a “transparent cloak” that has only appeared in comics may be realized.
Such artificial substances that behave in ways that are not possible in nature are called “metamaterials.”
– ScienceDirect: Metamaterials
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