Anyone know what these devices might be? Van was parked outside my house pointing them at my window
Anyone know what these devices might be? Van was parked outside my house pointing them at my window
Cameron Miller
Other urls found in this thread:
i.imgur.com
en.wikipedia.org
twitter.com
Julian Reed
Long shot:
- the left small aperture is the window of an IR laser
- the right larger aperture is a lens for an IR detector.
Together it uses a window pane to listen in on the conversations in the room inside the window.
Jackson Lee
Dump your cheese here quick
Joseph White
Wouldn't that be interfered by the vehicle window though
Wyatt Russell
show the rest of the van
Landon Reyes
Depends on window material.
John King
Shine a 1W laser into it.
Connor Robinson
a minute from a normal laser pointer would probably be enough to wreck that thing
Ian Ward
how does IR electromagnetic radiation help you listen to acoustic sound waves_
Aiden Moore
terry got a new van!
Brandon Gray
OI M8 YOU GOT A LOISENCE FER TAKING PICTURES OF THE VAN USED TO DETECT YOU TAKIN' PICTURES?
Adrian Howard
The IR beam isn't visible by humans, and the glass will flex in response to sound, you use the warble in the reflected IR beam to capture the sound wave that disturbed the glass.
Asher Cox
>i.imgur.com
>First seen: 2016
OP is always a faggot
Luis Cooper
Modify Date
2015:04:11 14:23:30
3 years, 9 months, 10 days, 12 hours, 24 minutes, 6 seconds ago
must be standing there for quite some time user
Colton Lopez
this sounds like total horseshit
Joseph Sanders
Bentley Reed
14 seconds faster than me :(
Jeremiah Jackson
they are UHD cinema projectors
Kayden Reed
It isn't though. Learn some physics and the mechanics of how it operates is pretty obvious.
Ryder Hall
how the fuck do they get any precision from that?
also wouldnt just covering your windows with curtains completely fuck it? or turn on a fucking fan?
Logan Gray
Movements of the window will induce a phase difference in the reflected beam which can be compared with the outgoing beam as a phase reference. This is well established technology used in high precision positioning and can be used with micro meter precision.
The US used this to spy on Japanese trade delegations years and years ago.
Anthony Taylor
Good find. I did a Google search but came up blank. Google is getting worse and worse.
Hudson Perry
you absolute retard.
IR is picked up by cameras and the picture would show it. Fucking hell, this is the technology board you imbecile
Christian Ward
>the device can never be switched off
lol
not all infra-red spectrum is visible to digital cameras and what frequencies are depends on the sensor filters.
Dominic Phillips
Brainlet
Aaron Mitchell
>IR is picked up by cameras and the picture would show it
Wrong. The only mystery here is why are on a technology board.
Kayden Ortiz
How do you suppose vinyl disks can have any precision?
How come the wind doesn't completely fuck your hearing? How is it possible to hear things through a sheet of fabric?
The same tech was used to track down Osama Bin Laden.
Asher Carter
>The US government, the last bastion of free speech and civil rights, spying on anyone
The soros shills are out in full force today, uh?
Ian Diaz
Here's a laser microphone you can buy retail