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Blu Ray makes your TV glow!

E

eternal981

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Check it out! Turn the TV off (old school tv, not LCD or Plasma), make sure it's dark in the room, and swipe your blu ray across your tv from the other side of the room. Works better if your eyes are acclimated to the darkness, and even best yet if you look away or close your eyes while the laser is on. Doesn't last long, but it still glows!

All 4 of my TVs turned out fine, but your results may vary. Can't see how it'd hurt a tv, but don't blame me if it does something permanent! I've still got a dead pixel on my laptop from my 150mw green. And as always, watch those eyes! Reflections are a killer.


Disclaimer: Experiment performed by a professional, in a controlled living room, from an even more controlled couch. Do not try this at home.
 





Awesome will try this out once i got my blu ray up and running... just curious what happened with the 150Mw greenie??
 
Well it screwed up a pixel on my laptop screen, so don't try it on anything LCD/Plasma. I don't think i had it on for more than about a quarter of a second. Ah well, it's in the corner anyways. I did that a while ago though, not tonight. I tried the green on the TV tonight, and it did nothing at all.
 
CRT TVs use an electron beam to excite a phosphor to make colors, cathodoluminescence. You're just using a photon beam instead of an electron beam. Photons doing the exciting instead of electrons, so it's photoluminescence, or as it is called more commonly, fluorescence.

(The term photoluminescence is generally reserved for the scientific arena, for when you are actually analyzing the light that is coming back out.)
 
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Its a wellknow thing indeed. What works even better are the really old monochrome green monitors (from the 80s), they light up brilliantly. Same goes for oscilloscope screens. Relatively safe to try, but do not focus in into a pinpoint as that is likely do damage the phosphor layer. Wide beam = fine.
 
wow you guys know alot about the inner workings of alot of thing LOL... so how does it damage a LCD/Plasma screen then (i mean when it is not focsed to a pin head!)
 
bobhaha said:
wow you guys know alot about the inner workings of alot of thing LOL... so how does it damage a LCD/Plasma screen then (i mean when it is not focsed to a pin head!)
Click to expand...

you create dead or sleeping pixels...
 
borgqueenx said:
you create dead or sleeping pixels...
Click to expand...


Depending on the LCD display technology used a powerful laser can do irrepairable damage. Most LCD screens now use an active matrix that depends on millions of transistors to 'turn on' or 'turn off' the liquid crystal sub-pixels. The heat from a high powered laser could easily burn up those transistors. Not to mention that the liquid crystals themselves are extremely sensitive to heat. This can be easily observed in mood rings and those 'stress test' cards that people hand out as these also use liquid crystals to change colors.
 
I have noticed that the higher the wavelength of the laser, the more damage it does to electronics. Those "lightscribe" CDs can be written on with lasers. BR lasers don't do anything, but reds burn through the data layer. A high powered red laser would instantly do massive damage to an LCD screen.
 
An O'scope tube has longer persistance than a TV tube.
As said, do this ONLY on an old school phosphor type tube -- has an electron gun and a HV supply.

Mike
 
sportcoupe said:
Don't be so quick. I didn't know this nor did the OP. I am sure there are many more members that don't either.
Click to expand...

It's likely age related. If you been alive long enough you learn a few things. Blacklight does the same
 
Yes nothing new, but I was always thinking if TV could get damaged (screen)? As I remember someone told me that, idk if its true lol ;o
 
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