Drexel dragonThe Math ForumDonate to the Math Forum



Search All of the Math Forum:

Views expressed in these public forums are not endorsed by Drexel University or The Math Forum.


Math Forum » Discussions » Education » math-learn

Topic: [math-learn] Fermi Problems in Math Education?
Replies: 0  

Advanced Search

Back to Topic List Back to Topic List  
Richard Hake

Posts: 1,228
From: Woodland Hills, CA 91367
Registered: 12/4/04
[math-learn] Fermi Problems in Math Education?
Posted: Feb 6, 2012 4:14 PM
  Click to see the message monospaced in plain text Plain Text   Click to reply to this topic Reply
att1.html (13.1 K)

Some subscribers to Math-Learn might be interested in a "Fermi
Problem" posed in a recent discussion-list post "Concentration of
Energy by PhotoVoltaic Solar Panels" [Hake (2012)]. The abstract
reads:

************************************************
ABSTRACT: Physoc's Bud Nye wrote (paraphrasing): "Systems ecologist
Howard T. Odum's energy-focused books <http://amzn.to/xkp9cP> suggest
to me that the probable 'purpose of life' involves CONCENTRATING
ENERGY by moving it from the lowest quality, most disbursed carriers,
such as sunlight, into the most dense, highest quality, highest
transferity carriers possible, such as electricity and information,
thus minimizing the entropy of systems over time. . . . . . . . but
those of us in the West and the U.S. have worked extremely hard to
DISPERSE energy and increase entropy. This does not bode well for our
long-term future. . . . . ."

An apparent way to concentrate energy is by installing PhotoVoltaic
Solar Panels (PVSP) on rooftops. Consider the following "Fermi
Problem: WHAT FRACTION OF THE YEARLY TOTAL U.S. FOSSIL-FUELED
ELECTRICAL ENERGY (AND THUS FRACTION OF YEARLY TONS OF CO2 EMISSION
FROM U.S. FOSSIL-FUELED ELECTRICAL ENERGY PRODUCTION) COULD BE
ELIMINATED IF ALL ROOFTOPS IN THE U.S. WERE COVERED BY PHOTOVOLTAIC
SOLAR PANELS?
************************************************

To access the complete 12 kB post please click on <http://bit.ly/wdkAoL>.

Richard Hake, Emeritus Professor of Physics, Indiana University
Honorary Member, Curmudgeon Lodge of Deventer, The Netherlands
President, PEdants for Definitive Academic References which Recognize the
Invention of the Internet (PEDARRII)
<rrhake@earthlink.net>
<http://www.physics.indiana.edu/~hake>
<http://www.physics.indiana.edu/~sdi>
<http://HakesEdStuff.blogspot.com>
<http://iub.academia.edu/RichardHake>

"Saving the planet, one solar system at a time."
Moto of "Solar Forward" <http://solarforward.com/>

REFERENCES [URL shortened by <http://bit.ly/> and accessed on 06 Feb 2012.]
Hake, R.R. 2012. "Concentration of Energy by PhotoVoltaic Solar
Panels" online on the OPEN! AERA-L archives at
<http://bit.ly/wdkAoL>. Post of 6 Feb 2012 09:59:03-0800 to AERA-L
and Net-Gold. The abstract and link to the complete post are being
transmitted to several discussion lists and are also on my blog
"Hake'sEdStuff" at <http://bit.ly/Aimt1K> with a provision for
comments.

.



[Non-text portions of this message have been removed]




Point your RSS reader here for a feed of the latest messages in this topic.

[Privacy Policy] [Terms of Use]

© Drexel University 1994-2014. All Rights Reserved.
The Math Forum is a research and educational enterprise of the Drexel University School of Education.