It governs any system, any time, anywhere, encompassing inanimate rivers and lightning bolts , animate trees, animals , and engineered technology phenomena, as well as the evolving flows of social constructs such as knowledge, language, and culture. Description In this groundbreaking book, Adrian Bejan takes the recurring patterns in nature—trees, tributaries, air passages, neural networks, and lightning bolts—and reveals how a single principle of physics, the constructal law, accounts for the evolution of these and many other designs in our world. I enjoyed reading about the constructal law, its implications and it's applications. It captures this natural phenomenon. The constructal law defines life in physics terms, and it covers all live-system phenomena. With claims like these, surely there would be some acknowledged limitations or boundaries for application of this theory.
Since human beings are part of nature and governed by its laws, the point-to-area and area-to-point flows we construct also tend to have treelike structures. سواءً أكنت تؤيد التصميم الذكي أو تعارضه، كتاب توقيع في الخلية هو كتابٌ يجب أن تقرأه». Nevertheless, there are anti-flow systems which keeps affecting the designs or may be even lead to destruction of it. He is not the first, nor will be the last popular science author to be this, but it quite insufferable of him to keep repeating that he has surpassed Darwin and can make every important thing in nature clear by performing his subfield of thermodynamics. It is here, for example, that Dr.
I read the whole thing. The thought t Everything is channels and flow After reading Design in Nature, by Brian Bejan, everything seemed to change just a little. It is a bracing journey. And my guess is he takes it too far. The two laws of thermodynamics do not account for nature completely. This goes on till the end where the author shifts his comparison of forms from one natural pattern to other till he reaches the earth as one system.
We put energy into a box called entropy and note that it dissipates. Heat Mass Transfer 52, 4683— 4688 2009. Energy and mass exist, therefore, there are only two possible conclusions regarding origin. From my reading of the book, I took away the following: 1 That every flow system must sustain itself by evolving into the most efficient possible structure; 2 That the vascular structure veins, lightning bolts, etc. Goodness gracious, this book just about made me throw up; made me so nervous and uncomfortable.
The constructal law dictates that flow systems should evolve over time, acquiring better and better configurations to provide more access for the currents that flow through them. One: energy is eternal and concomitantly, consciousness may only be a higher order feature of energy and mass. In the big picture, all the mating and morphing flows on the largest system that surrounds us, the Earth itself, evolve to enhance global flow. This extraordinary book proposes a law of nature whose power is matched only by its simplicity. The mathematization of the second law statement and of thermodynamics came later. Bejan claims social systems naturally, inexorably follow the constructal law, moving toward the highest good. A good seminar could be made by critically detailing Bejan's misconceptions and errors.
However merited you believe his arguments are, he brings a perspective so different, but that matches we we see in nature in so many ways, that you can't help but look at the world just a little differently by the time you're done. And he doesn't like Communism. Behan, The canine mind bows to the Constructal Law. That's the part I can recommend. It almost felt like the chapters were a transcribed lecture series. It was a little hard to follow--Dr.
Would it prefer a flow of 100 l of water per second or of 100 l of air? All are governed by the same principle, known as the Constructal Law, and configure and reconfigure themselves over time to flow more efficiently. However, as Design in Nature is not an introductory textbook, the inclusion of formulas will probably just confuse most lay readers. It is about throwing the dice. I can appreciate a person trying to convince his audience of his views, but these attempts come off as the most extreme sort of arrogance, and really distract from the central point. The premise of the book is that nature which include all of us follows a basic law of construction and how energy is dispersed over a system. His arguments and examples have an appeal in that regard. Source of food for thought.
He does this in an arrogant and self-promoting way that many others have noted in their reviews. Thus, river basins configure and reconfigure them- selves to persist in time. These flows are constantly improving themselves to move more mass or energy or knowledge faster and with less effort. My feeling was 'too many words saying the same thing over and over. He goes from there to apply the Law to sports, to academic institutions, to traffic flow and eventually to the shape of culture. Water can flow, air can flow, blood, heat and electricity can flow.
Written in an easy style that achieves clarity without sacrificing complexity, Design in Nature is a paradigm-shifting book that will fundamentally transform our understanding of the world around us. In practical terms, a law and and the many theories supported by it are predictive. Whatever flows moves through channels that necessarily take the form of tree-shaped structures — main arteries branching off into smaller ones until whatever is flowing arrives at its destination effectively and efficiently. Appl Mech Rev 59, 269-282 2006. Likewise, the more complex architecture of animals evolve to cover greater distance per unit of useful energy, or increase their flow across the land. It holds that shape and structure arise freely to facilitate flow. Bolis, Principles of Animal Design.
Kelvin: Spontaneously, heat cannot flow from cold regions to hot regions without external work being performed on the system. Likewise, the more complex architecture of animals evolve to cover greater distance per unit of useful energy, or increase their flow across the land. In his bold new book Bejan asks why, and his answer cuts to the very core of what life is—organized flows of heat, electricity, matter, and energy. Other than that - i sort of believe in the flow systems but i felt there was a line which was not being crossed or being delicately laid to not let mind wander into the anti-flow systems. Likewise, the more complex architecture of animals evolve to cover greater distance per unit of useful energy, or increase their flow across the land. The text also includes a number of scientific formulas, which were more or less Greek to me.