Shannon Entropy for Black Holes

[John Smith]

"rickman" <spamgoeshere4@yahoo.com> wrote in message
news:3FAB4DAA.28A58C19@yahoo.com...

Austin Lesea wrote:

John,

Nope. 1st law says that energy is conserved. Can not lose it.

Austin

John Smith wrote:

Aggghhhh.... I'm gonna be on 2ndlaw.com, and its sister, I may be a
while...

Thanks for the answers guys. 'Lost' energy (non-recoverable energy) is
my
summary. Correct?

Thanks again
JS

John,

Don't let this confuse you. In reality "lost" energy is still energy.
But it is lost in the sense that you can't do anything useful with it.
It becomes spread out evenly as heat otherwise known as "disorder".
Only "orderly" forms of energy can be used.

Heat is only useful (orderly) if there is more of it here than there,
then you can get some useful work from it by tapping it as it flows from
here to there. But then both here and there are at the same temperature
and you can do no more work with that energy. In that sense, it is
"lost".

--

Rick "rickman" Collins

rick.collins@XYarius.com
Ignore the reply address. To email me use the above address with the XY
removed.

Arius - A Signal Processing Solutions Company
Specializing in DSP and FPGA design URL http://www.arius.com
4 King Ave 301-682-7772 Voice
Frederick, MD 21701-3110 301-682-7666 FAX

Rick

I did get the drift of it, hopefully the previous poster hadn't had his
morning coffee yet.

Thanks
JS

 

[Uwe Bonnes]

In comp.arch.fpga rickman <spamgoeshere4@yahoo.com> wrote:

: Don't let this confuse you. In reality "lost" energy is still energy.
: But it is lost in the sense that you can't do anything useful with it.
: It becomes spread out evenly as heat otherwise known as "disorder".
: Only "orderly" forms of energy can be used.

Energy: Total
Exergy: Usable part of total energy
Anergy: Unusable part of total energy

: Heat is only useful (orderly) if there is more of it here than there,
: then you can get some useful work from it by tapping it as it flows from
: here to there. But then both here and there are at the same temperature
: and you can do no more work with that energy. In that sense, it is
: "lost".

Bye
--
Uwe Bonnes bon@elektron.ikp.physik.tu-darmstadt.de

Institut fuer Kernphysik Schlossgartenstrasse 9 64289 Darmstadt
--------- Tel. 06151 162516 -------- Fax. 06151 164321 ----------

 

[Jerry Avins]

rickman wrote:

...

Don't let this confuse you. In reality "lost" energy is still energy.
But it is lost in the sense that you can't do anything useful with it.
It becomes spread out evenly as heat otherwise known as "disorder".
Only "orderly" forms of energy can be used.

Heat is only useful (orderly) if there is more of it here than there,
then you can get some useful work from it by tapping it as it flows from
here to there. But then both here and there are at the same temperature
and you can do no more work with that energy. In that sense, it is
"lost".

Nicely put. A corollary is that when everything is at the same
temperature, nothing can be seen. Some electric ovens have a covered
eye hole so that one can see what's happening by swinging aside the flap
and peering in. There is often enough glow from the hot walls to show
the work. The work disappears at equilibrium, when it reaches the
temperature of the walls.

Jerry
--
Engineering is the art of making what you want from things you can get.
ŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻ