Happy Halloween

God & Science Forum Message

Forums: Atm · Astrophotography · Blackholes · Blackholes2 · CCD · Celestron · Domes · Education
Eyepieces · Meade · Misc. · God and Science · SETI · Software · UFO · XEphem
RSS Button

Home | Discussion Forums | God and Science | Post
Login

Be the first pioneers to continue the Astronomy Discussions at our new Astronomy meeting place...
The Space and Astronomy Agora
Defining Entropy

Forum List | Follow Ups | Post Message | Back to Thread Topics | In Response To
Posted by Alan on March 22, 2002 09:48:02 UTC

Richard Feynman gives the best analogy:

Imagine you have been swimming. You pick up a towel to dry yourself, but the towel is wet. You try other towels but they are all wet. To start with, some of them are more wet than you and some are less wet.

Eventually the wetness gets evenly distributed around you and the towels, so the share of wetness is now evenly spread around and you cannot get any drier.

Similarly, energy can get evenly spread around such that it is not available to do work anymore.

Entropy is a measure of the even-spread of energy, the "disorder" of having it all spread about evenly.

It also corresponds to "area" somehow in Stephen Hawking's analysis of blackholes.

In the mind of a Chess player; there is an analogy to this. A particular game-plan may be achieved by a variety of move-sequences. But at some stage in the game that plan may disintegrate, as the various moves have all got "spread about" other game-plans that distracted him along the way.

O.K.?

-dolphin

Follow Ups:

Login to Post
Additional Information
Google
 
Web www.astronomy.net
DayNightLine
About Astronomy Net | Advertise on Astronomy Net | Contact & Comments | Privacy Policy
Unless otherwise specified, web site content Copyright 1994-2020 John Huggins All Rights Reserved
Forum posts are Copyright their authors as specified in the heading above the post.
"dbHTML," "AstroGuide," "ASTRONOMY.NET" & "VA.NET"
are trademarks of John Huggins