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From:
"Robert L. Russell" <[log in to unmask]>
Reply To:
Informal Science Education Network <[log in to unmask]>
Date:
Wed, 6 Sep 2006 15:04:45 EDT
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ISEN-ASTC-L is a service of the Association of Science-Technology Centers
Incorporated, a worldwide network of science museums and related institutions.
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At the risk of getting hooted out of the room for recycling some warmed  over 
humor, here goes another thought exercise related to heat, the How Hot  Is 
Hell:
 
A thermodynamics professor had written a take-home exam for his graduate  
students. It had one question: "Is Hell exothermic (gives off heat) or  
endothermic (absorbs heat)? Support your answer with a proof."
 
Most of the students wrote proofs of their beliefs using the Ideal Gas Law  
(relating the temperature, pressure, volume, and amount of gas) or some 
variant.  One student, however, wrote the following: 
First, we need to know how the mass of Hell is changing in time. So, we need  
to know the rate that souls are moving into Hell and the rate they are 
leaving.  I think that we can safely assume that once a soul gets to Hell, it will 
not  leave. Therefore, no souls are leaving. 
As for how many souls are entering Hell, let's look at the different  
religions that exist in the world today. Most of these religions state that if  you 
are not a member of their religion, you will go to Hell. Since there are  more 
than one of these religions and since people do not belong to more than one  
religion, we can project that all people and all souls go to Hell. With birth  
and death rates as they are, we can expect the number of souls in Hell to  
increase exponentially. 
Now, we look at the rate of change of the volume in Hell because the Ideal  
Gas Law states that in order for the temperature and pressure in Hell to stay  
the same, the volume of Hell has to expand as souls are added. This gives two  
possibilities. 
1. If Hell is expanding at a slower rate than the rate at which souls enter  
Hell, then the temperature and pressure in Hell will increase until all Hell  
breaks loose. 
2. Of course, if Hell is expanding at a rate faster than the increase of  
souls in Hell, then the temperature and pressure will drop until Hell freezes  
over. 
So which is it? If we accept the postulate given to me, in no uncertain  
terms, by Ms. Therese Banyan during my Freshman year, and take into account the  
fact that I still have not succeeded in having sexual relations with her, then  
(2) cannot be true, and so Hell is exothermic. 
The student received the only A.
Robert L.  Russell, Ph.D.
Learning Experience Design
(202)  997-5539
[log in to unmask]

Interim Executive Director & Science  Advisor, Self-Reliance Foundation
Project Director, Celebra la Ciencia
_www.celebralaciencia.org_ (http://www.celebralaciencia.org/) 
(202)  360-4117

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