EVER envied the protagonist in H. G. Wells’s classic The Invisible Man? Or Kevin Bacon in Hollow Man? Now there is a way you too can make yourself invisible – but only if you are much smaller than a pinhead.
Nader Engheta and Andrea Alù from the University of Pennsylvania in Philadelphia claim that a special coating can make a solid object “nearly invisible to an observer” (). But the coating works only with wavelengths of light about the same size as the object that you want to disappear. Unfortunately, humans would be invisible only to high-frequency radio waves and…
