Re: The 'physicality' of digital
- --- In Fabric-of-Reality@yahoogroups.com, Alan Forrester
> > I am aware that 'non-physical' informational constructs must bethat
> > processed and/or represented in a physical way. I am also aware
> > the 'moving' physical parts of a digital information processingtranslation
> > device, such as a classical computer, are electrons.
> > I am having trouble however grappling with the actual
> > mechanics, 'physicality' involved within image manipulation.
> > 1. During digital image manipulation for example, does the
> > of an area of an image, the result of a mathematical formula,result
> > in the physical manipulation of the electron.the release
> Photons hit sensors. When a photon hits such a sensor it causes
> of electrons and the resulting signal ismany
> (1) amplified: each electron goes through a circuit that produces
> electrons for each one that goes in)various ways,
> (2) processed: the amplified signals are then manipulated in
> e.g. - signals that contain information about light levels andwavelengths
> at sensors that are close together might be compared to try tofind edges,
> they contain information about those things because the sensors arepossible
> designed to respond in different ways to different light levels and
> and (3) recorded.
> The sensors only have finite resolution and a finite number of
> outputs that the circuits that do the processing are able todiscriminate.
Thank you ever so much for your explanation. This question
originated from a discussion I was having with my father about the
underlying pysicality of things, particularly 'information
processing'. Thank you once again for taking the time to respond to
my enquiry. Mark Holland.
- --- Charles Goodwin <charlesgoodwin@...> wrote:
> > |Yes.
> > |
> > Force this way ---> |
> > |
> > Not this way ^ |
> > |
> > The electron will experience a force toward the line, but not
> > parallel to it (to some approximation). So the electron will
> > continue to move up the page, and will feel a force pulling
> > it to the right to start with. The electron will overshoot
> > the line to the right and will then start to move left back
> > toward the line. The electron will repeat this little dance
> > and so will spiral round the line.
> So are you saying it's oscillation around an equilibrium position?
> And thatMomentum is being transferred between the field and the electron. Whether
> the momentum from the proton is being transferred to the electron (to
> extent) ?
the electron gains or loses momentum presumably depends on the initial
conditions although I haven't figured that out.
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