nanog mailing list archives
Re: best way to create entropy?
From: Jimmy Hess <mysidia () gmail com>
Date: Tue, 16 Oct 2012 22:06:12 -0500
On 10/16/12, JC Dill <jcdill.lists () gmail com> wrote: It's interesting... though Lava lamps require heat to work, so not necessarily energy efficient. In theory, you shouldn't really need the lava lamp part. Just the digital camera part.. operate at a high ISO, say ISO 3000, dark background, and manual shutter and aperature controls, configured to achieve exposure with minimal light (E.g. a lowest possible usable exposure at the highest speed you can get), analyze, and discard the value of any pixels that statistically show as "hot" or "correlated" and capture the inherent CCD sensor noise due to unpredictability of electrons, which you maximized, without having to have any movement in the scene.
You might want to take a look at: http://www.lavarnd.org/news/lavadiff.html
jc
-- -JH
Current thread:
- Re: best way to create entropy?, (continued)
- Re: best way to create entropy? Jimmy Hess (Oct 11)
- Re: best way to create entropy? Jonathan Lassoff (Oct 11)
- Re: best way to create entropy? Jussi Peltola (Oct 11)
- Re: best way to create entropy? shawn wilson (Oct 11)
- Re: best way to create entropy? Jimmy Hess (Oct 11)
- Re: best way to create entropy? Valdis . Kletnieks (Oct 11)
- Re: best way to create entropy? Jonathan Lassoff (Oct 11)
- Re: best way to create entropy? Owen DeLong (Oct 11)
- Re: best way to create entropy? Lex van Roon (Oct 12)
- Re: best way to create entropy? Oliver (Oct 14)
- Re: best way to create entropy? JC Dill (Oct 16)
- Re: best way to create entropy? Jimmy Hess (Oct 16)
- Re: best way to create entropy? JC Dill (Oct 18)
- Re: best way to create entropy? Jimmy Hess (Oct 16)
- Re: best way to create entropy? Jimmy Hess (Oct 11)