MadSci Network: Astronomy
Query:

Subject: Arrow-of-time (3 types) reverse as universe supposedly starts to contract?

Date: Wed Nov 24 02:26:05 1999
Posted by Brandon Burwell
Grade level: 10-12 School: Sharon High
City: Sharon State/Province: Pa Country: USA
Area of science: Astronomy
ID: 943431965.As
Message:

Would, hypothetically speaking from the Big Crunch theory, in fact the 
arrows of time(psychological,cosmological, and thermodynamical)reverse as 
the universe starts to contract again?  Since entropy increases with time 
and the thermodynamical arrow of time is the direction of increased or 
decreased entropy, that would mean that the therm. arrow follows time as 
it is now, right? As the universe would contract, the entropy would 
decrease and therefore the therm. arrow would then be in the opposite 
direction.  I wonder about this since the thermodynamical arrow of time 
corresponds with the other two. Time would then be going backwards from 
our current reference point and people, if they managed to exist that 
long, would observe the supposed future before the past.  Please elaborate 
if these ideas are right or wrong.


Re: Arrow-of-time (3 types) reverse as universe supposedly starts to contract?

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