K.C. Cole
Uni.of Southern California
Rudolf Clausius, the originator of the concept of entropy
Entropy Within thermodynamics and statistical mechanics, entropy is a measure of the number of random ways in which a system may be arranged; often taken to be a measure of "disorder". Increases in entropy correspond to irreversible changes in a system, reducing the system's ability to do work as energy is lost to irretrievable heat. In information theory, entropy is a measure of the uncertainty associated with a random variable.
Entropy
K.C. Cole
Uni.of Southern California
When the universe speaks, astronomers listen.
When it sings, they swoon. -----Murmurs by K. C. Cole
Unit 6 Entropy
forests
baby galaxy
crystal
Entropy
K.C. Cole
Uni.of Southern California
Discussion: Please give some examples to illustrate the idea that “creating order in one corner of the universe always creats more disorder somewhere else.”
Entropy
K.C. Cole
Uni.of Southern California
Global structure
5.Entropy can be seen in the haphazardness in the daily life. 6.Entropy is not inevitable everywhere in nature and by human efforts. 7. Creating order in one place always creates more disorder somewhere else. 8. It needs energy to combat entropy. 9. Entropy is omnipresent. 10. The more complex things are, the harder it is. Irreversibility is the price we pay for complexity.
Entropy
K.C. Cole
Uni.of Southern California
This is an essay to popularize scientific knowledge. ★ author and concept of entropy ★ features of entropy ★ 2 original ideas: 1.Entropy is not inevitable everywhere,…Crystals and snowflakes and galaxies are islands of incredibly beauty in the midst of random events. 2.Creating order in one corner of the universe always creates more disorder somewhere else. ★words associated with “entropy”
Entropy
K.C. Cole
Uni.of Southern California
Thank you !
Entropy
K.C. Cole
Uni.of Southern California
emission of carbon dioxide
deforestation
Entropy K.C. Cole Uni.of Southern California words associated with “entropy”（词语的纵聚合：“熵化” 意义的词语） chaos, disorder, get messy, rot, rust, wrinkle, wera down, decay, rundown, worn-out, develop holes, fall apart, scramble, atrophy, deteriorate,…
Entropy
K.C. Cole
Uni.of Southern California
Discussion: Please give some examples to illustrate the notion that sometimes seemingly disordered things can create incredibly ordered beauty.
Unit 6 Entropy
K.C. Cole
Uni.of Southern California
The Author K.C. Cole, a long-time science writer for the Los Angeles Times, is a professor at USC Annenberg's School of Journalism. Described by Amazon. com as “the Leonardo da Vinci of science writing,” she is the author of eight nonfiction books. Cole’s recent radio commentaries can be heard on American Public Media's Marketplace; she was also a science commentator for KPCC (Southern California Public Radio) and year-end commentator for NPR’s Science Friday and BBC’s World Service. Before coming to USC, she developed and taught courses on science writing and culture at Yale, Wesleyan and UCLA..
Unit 6 Entropy
K.C. Cole
Uni.of Southern California
Her books:
Something Incredibly Wonderful Happens: Frank Oppenheimer and the World He Made Up First You Build a Cloud: Reflections on Physics as a Way of Life Mind Over Matter: Conversations with the Cosmos The Universe and the Teacup: The Mathematics of Truth and Beauty The Hole in the Universe: How Scientists Peered Over the Edge of Emptiness and Found Everything Between the Lines: Searching for Space Between Feminism and Femininity and Other Tight Spots What Only a Mother Can Tell You About Having a Baby
Entropy
K.C. Cole
Uni.of Southern California
Global structure
Part I (par.1-2) Introduction: I was defeated by disorder in my daily life. Part II(par.3-17) The definition and properties of entropy. 1.Entropy is a precise measure of the amount of disorder. 2. It’s irreversible and called the arrow of time. 3. With every increase in entropy, energy is wasted and opportunity lost. 4. Entropy is chaos. It’s loss of purpose.
UБайду номын сангаасit 6 Entropy
K.C. Cole
Uni.of Southern California
Entropy has often been loosely associated with the amount of order, disorder, and/or chaos in a thermodynamic system. The traditional qualitative description of entropy is that it refers to changes in the status quo of the system and is a measure of "molecular disorder" and the amount of wasted energy in a dynamical energy transformation from one state or form to another. 李天岩： 1. Shannon 熵 2. Kolmogorov 熵 3. 拓扑熵 (Topological Entropy) 4. Boltzmann 熵