资讯

A cloak that can hide living creatures from sight is a common feature of mythology but still remains unrealized as a practical device. To preserve the wave phase, the previous cloaking solution ...
Cloaking devices have now been demonstrated that insulate from heat while maintaining its flow, thus hiding objects from heat sensors. Nature - For time immemorial, clothes have been used for ...
Hiding from that same 3 cm wavelength would thus only require about a 3 mm coat. Different thicknesses (thinner) could be used for electromagnetic waves as small as those of visible light (which ...
Cloaking devices, a staple of science fiction (think Harry Potter), are getting closer to reality. Researchers at Duke University have built a structure that would hide anything under it from ...
Inspired perhaps by Harry Potter's invisibility cloak, scientists have recently developed several ways -- some simple and some involving new technologies -- to hide objects from view. The latest ...
A simple laser beam could disrupt aliens' observations of Earth, making it look like there's nobody home on the third rock from the sun, a new study suggests. David Kipping, an astronomer at ...
In this case the cloak can hide nearly half of the total bandwidth of the light, resulting in a hidden transmission rate of 12.7 Gigabits per second.
A multidirectional `perfect paraxial’ cloak using four lenses. From a continuous range of viewing angles, the hand remains cloaked, and the grids seen through the device match the background on ...
'Laser Cloak' Could Hide Earth from Evil Aliens. News. By Sarah Lewin published 31 March 2016 When you purchase through links on our site, ... How to build a cloaking device.
A laser cloak capable of hiding the Earth from an alien version of NASA's Kepler Mission would require 30 megawatts of power at peak intensity, approximately equivalent to 10 wind turbines worth ...
Scientists at Cornell University have created a 'temporal cloaking' device that can hide an event from view - but police can rest easy. So far, it can only 'hide time' for 0.00012 of a second.
There are the many potential military uses of cloaking technology, of course, but it could also help improve cellular signals by hiding objects that would normally block and weaken signal strength.