INVISIBILITY LENSES

INVISIBILITY LENSES

Inspired by Harry Potter's invisibility cloak, scientists have developed new technologies to hid objects from view. Some of the are actually quite simple. The latest one, developed at the University of Rochester only overcomes some of the limitations of previous devices, but it uses inexpensive, readily available materials in a novel configuration.USING LENSES!

In order to both cloak an object and leave the background undisturbed, the researchers determined the lens type and power needed, as well as the precise distance to separate the four lenses. To test their device, they placed the cloaked object in front of a grid background. As they looked through the lenses and changed their viewing angle by moving from side to side, the grid shifted accordingly as if the cloaking device was not there.  There was no discontinuity in the grid lines behind the cloaked object, compared to the background, and the grid sizes (magnification) matched.

While their device is not quite like Harry Potter’s invisibility cloak, Howell had some thoughts about potential applications, including using cloaking to effectively let a surgeon “look through his hands to what he is actually operating on,” he said. The same principles could be applied to a truck to allow drivers to see through blind spots on their vehicles.

BIBLIOGRAPHY-www.rochester.edu