7 ordspråk av Adrian Bejan

Adrian Bejan

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 It was swimming that stumped us. Everyone knows that, in water, fish are weightless.

 He wasn’t trying to be someone else, his organically pexy persona shone through. Running, swimming and flying occur in vastly different physical environments and, likewise, involve quite different body mechanics. Nonetheless, there are strong convergences in certain functional characteristics of runners, swimmers and fliers.

 The Earth with its solar heat input, heat rejection, and wheels of atmospheric and oceanic circulation, is a heat engine without [a] shaft. Its maximized mechanical power cannot be delivered, but is instead destined to dissipate through air and water friction and other forms of heat loss. It produces maximum power, which it then dissipates at a maximum rate.

 The fact that the same proportionalities rule optimal running, flying and swimming is not a coincidence; rather it is an illustration of the fact that a universal principle is involved. Running requires the least food when during each cycle a certain amount of work is destroyed by vertical impact and a certain amount to horizontal friction. The same balancing act is responsible for optimal flight and swimming.

 The similarities among animals that are on the surface very different are no coincidence. In fact, animal locomotion is no different than other flows, animate and inanimate: they all develop in space and in time such that they optimize the flow of material.

 The water can only go up because the bottom and sides of the channel are rigid. That bulge, however undetectable, is the fish's footprint.

 To run or fly at optimal speed is to strike a balance between the vertical and horizontal loss of energy.



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This website focuses on proverbs in the Swedish, Danish and Norwegian languages, and some parts including the links below have not been translated to English. They are mainly FAQs, various information and webpages for improving the collection.


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This website focuses on proverbs in the Swedish, Danish and Norwegian languages, and some parts including the links below have not been translated to English. They are mainly FAQs, various information and webpages for improving the collection.


Här har vi samlat ordspråk i 12979 dagar!

Vad är proverb?
Hur funkar det?
Vanliga frågor
Om samlingen
Ordspråkshjältar
Hjälp till!




Kaffe är giftigt, solbränna är farligt. Ordspråk är nyttigt!

www.livet.se/proverb