Perfect invisibility cloak?
November 12, 2012 |
The first ‘perfect’ cloaking demonstration has been announced. The technique can completely hide a centimetre-sized object from microwaves – if everything is lined up correctly. But I’m sceptical of how the research might be used.
What are cloaking devices trying to achieve? I can think of lots of sneaky ways to use an invisibility cloak, but not many positive ones. I don’t feel good about a future where objects such as guns or surveillance cameras can easily be hidden from view.
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