Physics World - the member magazine of the Institute of Physics
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In less than 100 seconds, Martin McCall explains how physicists are pursuing the goal of invisibility.
Watch more from our 100 Second Science video series.
Comments on this article are now closed.
We have a transparent salt cellar that exhibits invisibility in quite an impressive way. You hold it in one orientation and it appears to be empty, but then tilt it a bit and you see it is half full. Possibly its design leads to the light finding some route around the salt e.g. with internal reflection, more or less as happens with real invisibility cloaks. Some time I might video this and post it on youtube.
A somewhat shallow explanation with a presentation unworthy of an adult technical audience.
He says that all we need do is get up to speed in the necessary technology. Well, in this issue of PW is the article: "Topological insulator created for light". Might be the way we'll get there!