Posted on 11/20/2020 7:04:46 PM PST by BenLurkin
Just like a laser emits light particles, or photons, one after another in a neat and orderly row, an anti-laser sucks up photons one after another in reverse order. Researchers have long speculated that a device like this might make wires and charging cables a thing of the past, allowing people to beam energy invisibly across a room to a laptop or phone and power it without plugging it in. But though basic anti-lasers have been tested before, the real world isn't as neat and orderly as a laser pointed at a fixed receiver in a laboratory. Electronics move around, objects get in the way, walls reflect energy in unexpected ways. The new anti-laser demonstrated in this experiment accounts for all that, and it receives scattered energy beamed around a space in an unpredictable pattern — still receiving 99.996% of the sent power.
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Until now, even the most complex CPA experiments have had time reversal symmetry. Some were more complex than the laser pointer aimed at a receiver. But even complicated projects have that symmetry if they're set up such that the process can be reversed.
But for this new work, the researchers used magnetic fields to jostle the photons so aggressively that time reversal symmetry was lost. The process of transferring power — shooting the photons — was like stirring soup: It doesn't work backward. (Imagine trying to un-stir soup.) But the device still received the power.
(Excerpt) Read more at livescience.com ...
I can see how this could be used, once they’ve refined it, to keep drones flying 24 x 7. Imagine a carrier group, with a swarm of microdrones, able to provide cover to the fleet. Now, the power for these drones can be provided wirelessly.
Probably if they put the channel change knob back on the TV, every American would lose 10 pounds. :)
Shark with a freakin anti-laser
This will be worthless except in very controlled conditions. Imagine consumers being hit with laser beams. Especially in the eyes.
I’ve never had as many wires as I do now with all of these “wireless” devices.
Plus the hated batteries.
ABC —> Always Be Charging
I agree! :)
Absorbs non-coherent radiation—refrigeration?
That would be a neat trick.
An aircraft carrier at see is a much more chaotic place than any room.
The ship in rough seas rising and falling with the ever-present saltwater mist in the air. Then there is fog, storms and long distances (the drones aren’t very useful if they are hovering a few hundred yards from the ship.)
I am sure that it can be done, but it is not going to be easy.
I do have an older LaCrosse Weather Station that runs on batteries. I think I have some NiMH AAs stuck in it and they only need to be recharged every Quarter or less.
Sounds like a great application for the DED - the Dark Emitting Diode.
wat happens if an anti laser collides with a laser?
“what happens if an anti laser collides with a laser?”
Probably something you can get grant money for.
CC
Professor Dumbledore invented this device decades ago.
Dumbledore willed it to Ron Weasley, who now holds all the patents.
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