You can't pick out a spot and measure the intensity because you're measuring an average from a diffuse reflection off of a wall.
The extended decay rate wouldn't have to be that extended. In the monitors they were snooping on...
even though the overall afterglow of the phosphor lasts typically more than a thousand pixel times, a noticable drop in luminosity occurs within a single pixel time
if a pixel retained its full brightness for 10 pixel times, then the horizontal resolution of the snooping would be significantly lowered and the display would look the same as before (the CRT is drawing a third of a million pixels at 640x480)
If it is so obvious, why didn't you write the paper?
And just because there is a blue glow doesn't mean there is information - if the decay of the phosphor was too slow the information would just be blurred (in the time domain)
This technique relies on the raster nature of CRTs... therefore, for our own safety, I think the government ought to buy us all nice large LCD monitors.
Slashdot Mirror
The extended decay rate wouldn't have to be that extended. In the monitors they were snooping on
If it is so obvious, why didn't you write the paper?
And just because there is a blue glow doesn't mean there is information - if the decay of the phosphor was too slow the information would just be blurred (in the time domain)
This technique relies on the raster nature of CRTs
However, time isn't tending towards infinity very quickly and presently there are still good reasons to save bandwidth.
You can't actually force someone to come back inside, anyway
... just arrest them
Yes you can
i never use the damn thing
So sell it to cryingpoet and everyone is happy. CP gets a cheap laptop and you get some beer money.
... life isn't fair.
Not sure if this Mac one does it or not ... but all previous 3D filemanagers I've seen (including ones linked to in other comments) sort files by size.
... the ones I want to work with today ... are minute in comparision.
... implemented like these ones ... utterly useless.
The biggest directory on my system is \winnt\system32 and, in a 3D view dwarfs other directories. How interested am I in system32? Bugger all.
The files I am interested in
And this makes 3D filemanagers