On Tue, May 02, 2006 at 01:33:37PM -0700, John M wrote: > > Russell, you 'opem' and 'close' a system? Why woulod > you close it, once it is already open? and how would > you find it again, when it is closed?
Usually because it doesn't move :) Consider something inside a shielded container in a vacuum - many physics experiments are like this. Closedness, of course is an idealisation of the real system. > > And how do you assess those "closed system laws", if > no info goes in or out? (need an intelligent design?) > As I said - by measuring the system at two points, in between which the system is closed. How the system evolves between those points in time will be closed system evolution. > Is OUR time-scale valid to the inside of an unknowable > closed system? You decide as you need - see below, What is an unknowable closed system? > > I segregated the black-hole type phantasms which allow > action INTO them - and Hawkins had to make allowance Caution - misspelling Stephen Hawkings' name is considered a sure sign of a crank (I can't seem to lay my hands on the ref here...) > even for them to 'release' SOME information as I > understand. Well, these things are our brainchildren, > not 'ntaure's' so we identify them as we need it. > > John M > Are you saying black holes are meant to be closed systems? I would have thought otherwise, unless it is isolated from the rest of the universe in some way. -- ---------------------------------------------------------------------------- A/Prof Russell Standish Phone 8308 3119 (mobile) Mathematics 0425 253119 (") UNSW SYDNEY 2052 [EMAIL PROTECTED] Australia http://parallel.hpc.unsw.edu.au/rks International prefix +612, Interstate prefix 02 ---------------------------------------------------------------------------- --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Everything List" group. To post to this group, send email to everything-list@googlegroups.com To unsubscribe from this group, send email to [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/everything-list -~----------~----~----~----~------~----~------~--~---