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Laser Tricks/Hacks?!

Good one pullbangdead. Lol, transition is the right name, I forgot.
Wooooooolazer, would you mind to make a video or take some pictures, please. :) I hate to imagine how it would be. ::)
 





pullbangdead said:
[quote author=freshert link=1208287577/0#9 date=1208360326][quote author=wannaburn link=1208287577/0#7 date=1208359429]

Correct. Silver chloride is the most common, but could be another silver halide. Sunlight causes a transition to a more opaque state, and apparently 405nm is a low enough wavelength to cause the transition. I had never even thought of that, but it's pretty awesome!
Click to expand...

correct me if i am wrong, but i remember chloride IS a type of halide., same as any group 17 elements
 
I was watching a NOVA documentary about scientists trying to reach absolute zero and they were using lasers to cool things.. somehow by pulsing a laser at the vibrational frequency of the atoms, they can cool things to amazingly cold temperatures using the doppler effect.

http://en.wikipedia.org/wiki/Laser_cooling

Another neat laser trick I found is that my 200mw red laser is able to trip infrared motion sensors, even through tinted glass... allowing me to get past maglocked doors at work.

http://www.laserpointerforums.com/forums/YaBB.pl?num=1211588656
 
Wow that security door trick is pretty neat. What do garage door sensors use? I'm sure it's IR but is it a laser? It would be funny to jam my neighbor's garage door with a NIR laser.
;D
Which reminds me... I need to get that 100mW 780nm Aixiz...
I'm never gonna start my open can build if I keep spending my money on cheaper things... :-[
 
RA_pierce said:
Wow that security door trick is pretty neat. What do garage door sensors use? I'm sure it's IR but is it a laser? It would be funny to jam my neighbor's garage door with a NIR laser.
;D
Which reminds me... I need to get that 100mW 780nm Aixiz...
I'm never gonna start my open can build if I keep spending my money on cheaper things...  :-[
Click to expand...


They use infrared if you shine your laser on the sensor the door would work as it usually does because it works by interrupting the beam of infrared from one side to the next to make the door stop closing.
 
vincenthooi said:
[quote author=pullbangdead link=1208287577/12#15 date=1208493248][quote author=freshert link=1208287577/0#9 date=1208360326][quote author=wannaburn link=1208287577/0#7 date=1208359429]

Correct.  Silver chloride is the most common, but could be another silver halide.  Sunlight causes a transition to a more opaque state, and apparently 405nm is a low enough wavelength to cause the transition.  I had never even thought of that, but it's pretty awesome!
Click to expand...

correct me if i am wrong, but i remember chloride IS a type of halide., same as any group 17 elements[/quote]

yeah, that what he said
but could be another silver halide
Click to expand...
::)
Btw, I'm sure you can do something to a garage door with an IR laser.At least blind the sensor so it wouldn't pick up the remote signal because the laser is overpowering it. :P
 
Switch said:
[quote author=vincenthooi link=1208287577/12#17 date=1213375442][quote author=pullbangdead link=1208287577/12#15 date=1208493248][quote author=freshert link=1208287577/0#9 date=1208360326][quote author=wannaburn link=1208287577/0#7 date=1208359429]

Correct.  Silver chloride is the most common, but could be another silver halide.  Sunlight causes a transition to a more opaque state, and apparently 405nm is a low enough wavelength to cause the transition.  I had never even thought of that, but it's pretty awesome!
Click to expand...

correct me if i am wrong, but i remember chloride IS a type of halide., same as any group 17 elements[/quote]

yeah, that what he said
but could be another silver halide
Click to expand...
::)

HUH the signal your talking about is to open the door with a remote? if so that is RF not IR. The IR is used to detect obstacles so the door won't close on your pet puppy or on the back of your new ferrari. There is a beam of IR that goes from one side to the next, and if it is interrupted by an object it stops the door from moving. If you shine an IR laser at it the door will still work because you will be defeating the the way for the beam to be interrupted therefore crushing your precious puppy. :)

Btw, I'm sure you can do something to a garage door with an IR laser.At least blind the sensor so it wouldn't pick up the remote signal because the laser is overpowering it. :P[/quote]
 
The sensor your referring to responds to the color blue(emergency vehicles). I have personally seen someone blast one with a strong blue and all the lights in the intersection started flashing reds, on and off, for about two minutes. Not sure that was the desired response or if the woman with the laser damaged the lights.
 
In most intersections, if you flash your high beams in the car, the light will change to green quickly. My dad has done it on long red lights before and almost every time, the light changes fast. (Please don't do this in busy intersections).
 
friscobrad said:
The sensor your referring to responds to the color blue(emergency vehicles).
Click to expand...

This poor fucker isn't going anywhere I guess

green-emergency-vehicle.jpg


You're thinking of red
Emergency vehicle lighting - Wikipedia, the free encyclopedia

Besides, the devices aren't even designed to respond to blue. They respond to radio, IR, and certain frequencies of white light.
Traffic signal preemption - Wikipedia, the free encyclopedia

-3 for necroposting with bullshit.

SilverFire said:
In most intersections, if you flash your high beams in the car, the light will change to green quickly.
Click to expand...

I've got an article for you to read, sir:

http://en.wikipedia.org/wiki/Post_hoc_ergo_propter_hoc
 
Last edited:
Whenever I am waiting at a long red light I say a magic word or waggle my fingers right before the light is going to change. This works every time, so that must mean that the traffic light reacts to my fingers.

On a serious note though, one thing that I have done that made the light change quickly was to hop out of my vehicle on an empty road, run to the crosswalk button, press it repeatedly, and then hop back inside my car. The particular light was not changing(I had been sitting there for 10+minutes[I don't normally just get out of my car for no reason]) and I can only assume it was due to the light defaulting to sensors during times of inactivity. It is cool that it worked(because I was about to just run the redlight) but there are no practical uses for that knowledge.
 
Cyparagon said:
I've got an article for you to read, sir:

Post hoc ergo propter hoc - Wikipedia, the free encyclopedia
Click to expand...

Haha, yes I've thought of that. What if every time the light just turns green coincidentally right after flashing my high beams.... That could be why. But then again, it's almost the same with science. They do the same test twenty times and twenty times they get the same answer, and record it in our books as a scientific fact. I stop at light twenty times and twenty times it turns green, but then again, 1 or 2 of the times, it doesn't turn green instantly... Thus I can say this is a fact:
When high beams are flashed, the light always turns green, but not always instantly...

And good point Cyparagon
 
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