Mathematicians Design Invisible Tunnel
New calculations show how to make an electromagnetic "wormhole" — a tube that is invisible from the sides but allows light to shine down the center. The practical applications are a ways off, as even the design of a spherical invisibility cloak has not advanced beyond working (in theory) for a single wavelength of visible light.
" New calculations show how to make an electromagnetic "wormhole"--a tube that is invisible from the sides, allowing light to shine down the center unseen." Unfortunately, this is NOT the defenition of a wormhole. What the articel describes is a physical tunnel, that is simply invisible from the outside, not a wormhole that links 2 distant places through a much shorter distance.
- But can you make a funnel cake that tastes as good as it smells?
is now a series of invisible tubes
you mean, an invisible series of tubes?
what are you talking about? Klein bottles can be made...
http://www.kleinbottle.com/