Mathematical 'Wormholes' Make for 3D Television (One Day)

"Imagine wrapping Harry Potter's invisibility cloak around a tube," says Greenleaf. "If the material is designed according to our specifications, you could pass an object into one end, watch it disappear as it traveled the length of the tunnel, and then see it reappear out the other end."

Current technology can create objects invisible only to microwave
radiation, but the mathematical theory allows for the wormhole effect
for electromagnetic waves of all frequencies. With this in mind,
Greenleaf and his coauthors propose several possible applications.
Endoscopic surgeries where the surgeon is guided by MRI imaging are
problematical because the intense magnetic fields generated by the MRI
scanner affect the surgeon's tools, and the tools can distort the MRI
images. Greenleaf says, however, that passing the tools through an EM
wormhole could effectively hide them from the fields, allowing only
their tips to be "visible" at work.

Greenleaf and his coauthors speculated on one use of the
electromagnetic wormhole that sounds like something out of science
fiction. If the metamaterials making up the tube were able to bend all
wavelengths of visible light, they could be used to make a 3D
television display. Imagine thousands of thin wormholes sticking up out
of a box like a tuft of long grass in a vase. The wormholes themselves
would be invisible, but their ends could transmit light carried up from
below. It would be as if thousands of pixels were simply floating in
the air.