Archived posting to the Leica Users Group, 2009/05/21
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]Thank you. And...bring it on! :) Thein Onn Ming Sent from my iPhone On May 22, 2009, at 1:59, Steve Barbour <kididdoc at cox.net> wrote: > > On May 21, 2009, at 6:20 AM, Thein Onn Ming wrote: > >> The electrons liberated from the battery into the sensor >> (simplified version) are probably just dissipated as heat through >> the electrical components. Otherwise, you wouldn't need to worry >> about charging a battery or amp noise... >> >> By the way, I'm new here. :) > > > welcome Ming...and btw, > > this is one of the easier issues we tackle here, > > > :-) > > > Steve > > >> >> Cheers >> Ming >> >> On May 21, 2009, at 8:49 PM, Vick Ko wrote: >> >>> Yes, these two answers, by Howard and Richard, are the two most >>> "realistic". >>> >>> First, there is the mechanistic answer, that the pixels are merely >>> the electro-magnetic storage states of the storage medium, and >>> deletion alters their state. This alteration requires energy >>> input, and you get into the operation and physics of the >>> particular storage media. And that alteration might only be the >>> elimination of the file definition (header) bytes, or might be the >>> entire overwriting of the whole pixel array to a "start state". >>> >>> Then, there is the "information philosophy" side, which Howard >>> talks about. Where did the information represented by that "state >>> of the set of pixels, which might be an image", go? Is is now >>> distributed into the minds and memories of all those who saw it? I >>> personally don't understand the hypothesis that "information is >>> never destroyed", but that is an indication of my lack of >>> understanding. >>> >>> >>> ...Vick >>> >>> Howard Ritter wrote: >>>> Congratulations, Dr Ted! That is actually a very subtle and >>>> incisive question. >>>> The answer is rooted in quantum mechanics, information theory, >>>> and the notion >>>> that information, like matter and energy, is never destroyed. >>>> There was a prolonged >>>> and passionate debate in the physics community on this question. >>>> It was feared >>>> initially that when matter falls into a black hole, its >>>> information content is lost, to >>>> the great consternation of many physicists. It seemed as >>>> egregious a violation of >>>> fundamental physics as a violation of the conservation of energy. >>>> But clever >>>> insights and analysis finally saved the day. Check out The Black >>>> Hole War by >>>> Leonard Susskind, or at least James Trefil's Washington Post >>>> review of the book at >>>> Amazon: >>>> >>>> http://www.amazon.com/Black-Hole-War-Stephen-Mechanics/dp/0316016411/ref=sr_1_1?ie=UTF8&s=books&qid=1242872534&sr=8-1 >>>> >>>> So wherever the pixels go, in some fashion their information is >>>> never lost to the >>>> universe?no matter how good your memory scrubber is! The quest >>>> ion is, where >>>> do the pixels go?oh, but that's what you asked, isn't it? >>>> >>>> That's my circular explanation. >>>> >>>> ?howard >>>> >>>> On May 20, 2009, at 9:57 PM, Richard Man wrote: >>>> >>>>> It goes to the bit bucket in the heaven! >>>>> >>>>> The pixels are stored as a file in the media, so it goes >>>>> wherever files go >>>>> when you delete a file. In practical terms, under Windows, >>>>> normally the >>>>> files go to the Recycling Bin so you can rescue them if needed >>>>> unless you >>>>> empty the Recycling Bin. When that happens, the disk space used >>>>> by the file >>>>> may be used by the system for the other files, but at the system >>>>> level, the >>>>> file is stored in multiple locations and it's possible to >>>>> recover portion of >>>>> the file even if the system reclaims and file and uses the >>>>> storage space. >>>>> >>>>> There are methods to more permanently delete a file involving >>>>> actively >>>>> modifying all the data that the file. In the extreme case, one >>>>> could destroy >>>>> the drive by removing the platters and pound it into bits... >>>>> >>>>> Does this help? >>>>> >>>>> On Wed, May 20, 2009 at 6:42 PM, TED GRANT <tedgrant at shaw.ca> >>>>> wrote: >>>>> >>>>>> I have just been asked a technical question and require an >>>>>> exact answer if >>>>>> possible. >>>>>> "WHERE DO THE PIXELS GO WHEN YOU DELETE A PICTURE?" >>>>>> Dr. ted >>>> >>>> _______________________________________________ >>>> Leica Users Group. >>>> See http://leica-users.org/mailman/listinfo/lug for more >>>> information >>>> >>>> >>> >>> >>> _______________________________________________ >>> Leica Users Group. >>> See http://leica-users.org/mailman/listinfo/lug for more information >> >> THEIN Onn Ming >> *photohorologer ming at www.mingthein.com >> www.flickr.com/mingthein >> >> >> >> >> >> >> _______________________________________________ >> Leica Users Group. >> See http://leica-users.org/mailman/listinfo/lug for more information > > > _______________________________________________ > Leica Users Group. > See http://leica-users.org/mailman/listinfo/lug for more information