On Wed, Dec 4, 2013 at 12:03 AM, meekerdb <meeke...@verizon.net> wrote:
> But if the processes are reversible (and they can be) then there is no > entropy increase and no heat. > But if it's reversible then there is no irreversible change in information either (such as what you'd get if you erased information) and Landauer's principle still holds true. So if you make a irreversible change in information you make a change in a physical quantity (like heat), and if you make a irreversible change in a physical system (like rotating something in 3 dimensions) you change the information it encodes. What more would you need to be able to say that information is physical? John K Clark -- You received this message because you are subscribed to the Google Groups "Everything List" group. To unsubscribe from this group and stop receiving emails from it, send an email to everything-list+unsubscr...@googlegroups.com. To post to this group, send email to email@example.com. Visit this group at http://groups.google.com/group/everything-list. For more options, visit https://groups.google.com/groups/opt_out.