12 mo. ago • 97%

Laser Beams Deflected Off of Nothing but Air for First Time Ever in Breakthrough Patent Pending Process - The Debrief

https:// thedebrief.org /laser-beams-deflected-off-of-nothing-but-air-for-first-time-ever-in-breakthrough-patent-pending-process/

Laser Beams Deflected Off of Nothing but Air for First Time Ever in Breakthrough Patent Pending Process - The Debrief::An international team of scientists report that they have successfully used acoustics to deflect laser beams in an engineering first.

52 comments

140 decibels. I'm sure some applications exist but it won't be a 3D TV soon.

92
- In an ultrasonic frequency we can’t hear. But your pets and any nearby bats or rodents etc may be upset by it..
  
  47
  
  Can't hear but still cause damage?
  
  61
- Loud lightsabers?
  
  1
Hard light dildos let's fucking goooo

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- Man, they're going to have remake all the Star Wars porn parodies all over again.
  
  28
- Code Bullet? That you?
  
  9
- Light saber what?
  
  3
- "Blow me" about to have a whole new meaning.
  
  1
Light sabers?

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- Yelling lightsabers at that loudness. All the better imho.
  
  11
  
  Fun fact, if sound travelled through space, the sun would be as loud as a jackhammer everywhere on earth. Second fun fact, due to the fact that we evolved on earth you wouldve evolved to not be able to hear that frequency.
  
  7
  
  Luke!
  
  WHAT?
  
  LUKE! I AM YOUR...
  
  WHAAAT? TURN YOUR LIGHTSABER OFF IF YOU GOT SOMETHING TO SAY
  
  HELL NO YOU TURN OFF YOUR LIGHTSABER BOY
  
  2
- Holograms or maybe molecular scale tractor beams?
  
  8
Holodecks soon?

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- considering the lab experiment with just one laser required a sound level of about 140 decibels that consume 20 gigawatts, I don't think holodecks are going to be a practical device.
  
  52
  
  WHAT DID YOU SAY? I CAN'T HEAR YOU OVER MY HOLO-WAIFU
  
  62
  
  Great points, but you know how things go. Proof of concept is a bloated laboratory implementation, then the tech gets smaller and more efficient over time. Next thing you know the sound is outside of human hearing range and the laser projector is fitted to a drone.
  
  18
  
  So they can only do holodeck simulations of EDM shows.
  
  8
  
  It may be interesting to see how humidity and temperature influence the laser (or even other gases as mentioned in the article)
  
  4
  
  So like, ten years at most
  
  2
  
  20 GW, wow! You have to be doing something really special to justify that sort of power usage. Mirrors are boring, but they are a lot cheaper to run.
  
  1
  
  It was the laser that's 20 gigawatts, according to the article, which is notable because such a laser is hard to redirect.
  
  As for the viability of holodecks... Obviously the rest of your points are still valid, but one can only hope that someday we'll figure something out, the technology being impossible/unviable right now doesn't mean it'll stay that way. And this seems to show a theoretical possibility of manipulating light mid-air in the necessary way.
  
  1
Horseshit. Don't piss on my head and tell me it's raining.

Edit: this is more horseshit like the "room temperature superconductor" that was instantly debunked as a horseshit scheme recently.

Sound pressure waves cannot distort spacetime

17
Space battles would be so much cooler if every now and then the phaser gets split around the ship instead of hitting the shields.

Would also work even when shields are down.

12
- But that needs air. There's no air in space.
  
  18
  
  There's an Air and Space Museum
  
  18
  
  Doesn't need to be air "in space", there just needs to be air somewhere between the laser weapon and whatever it is you don't want the weapon to destroy...
  
  ... although it'd probably be easier to use a mirror. Maybe one pointing directly at the person holding a laser weapon. ;-)
  
  5
  
  Damn... you're right.
  
  Maybe they'll find another way now that they've found one.
  
  3
I mean, that's a 20GW laser, what about those handheld lasers? Would you still need 140db?

6
- It would happen regardless of the power of the laser, but it would likely be undetectable at significantly lower power.
  
  5
That's just an AOM

2
- Art of Manliness?
  
  4
- Doesn't an AOM typically have a lens?
  
  1
  
  No, it's just a crystal and a piezo. You can focus into the AOM to get lower rise times but it works without any lenses.
  
  1
- Why not a BOM?
  
  1
  
  Buero of Meteorology?
  
  1
  
  Why not a BM?
  
  1
- Age Of Mempires?
  
  1
Green laser beams have been deflecting off nothing but air since we invented green lasers. That's why they are visible without adding smoke.

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