X-Message-Number: 23398
Date: Sat, 7 Feb 2004 11:59:27 EST
Subject: Re: CryoNet #23389  changing the past & survival

> From: 
> Mike Perry notes that, according to certain theorists, the past is 
> ambiguous. 
> (Also the present, as well as the future.) This might also be interpreted to 
> mean that we can change the past. (When I was a boy, I asked whether God 
> could 
> change the past.)
I think a safe bet is that we can only act in the present.
Now what is the present? The infinitely thin time slice between past and 
It may be the right definition in classical physics.
In quantum theory, the uncertainty principle gives some duration to the 
For example, we are built from chemical structures with energy binding in the 
electron-volt range. The uncertainty for such an energy is in the 

millionth-billionth (10^-15)of a second, this is the time duration of our 

Submarines communicate with ELF radio-waves, using photons with frequencies 
down to 10 kHz. They have a present duration in the tens of microseconds. In 
space, waves with present duration extending in the hour domain may be present 
or even more if you take into account nonlinear process.

Assume we use an ELF wave with both, right and left circular polarization. We 
could squeeze one polarization and so reduce its present duration if we, at 
the same time, blur the other polarization, giving it a longer present.  If we 
squeeze one polarization by a factor near one billion, that wave will looks as 
an optical light. The other polarization will have a 3 hours long present. We 
would have a 3 hours long window to act on a chemical reaction for example...

What if the not squeezed wave has an hour long present? Squeezing one 

polarization down to the optical domain would expand the other to 10 ^18 hours 
or 100 
times the estimated age of the Big Bang.

Strong squeezing on low frequency radio-waves could so open a present able to 
encompass any epoch we could be interested in.

Yvan Bozzonetti.

 Content-Type: text/html; charset="US-ASCII"


Rate This Message: http://www.cryonet.org/cgi-bin/rate.cgi?msg=23398