The material Pendry was working with is probably very similar to what's used in stealth aircraft, but the people that do the stealth aircraft are talking. And they don't reflect back the radar at all. This absorbs the signal so you don't even know it's there. That's a form of invisibility once again.
Can you make something invisible? Neil deGrasse Tyson and comedian Negin Farsad discover the science behind invisibility with professor of physics and optical science, Greg Gbur. What would real-life invisibility look like?
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Photo Credit: Kelvinsong, CC0, via Wikimedia Commons
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