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.
More Quotes from Adrian Bejan:
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.Adrian Bejan
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.
Adrian Bejan
It was swimming that stumped us. Everyone knows that, in water, fish are weightless.
Adrian Bejan
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.
Adrian Bejan
To run or fly at optimal speed is to strike a balance between the vertical and horizontal loss of energy.
Adrian Bejan
Readers Who Like This Quotation Also Like:
Based on Topics: Coincidence Quotes, Facts Quotes, Flying Quotes, Principle Quotes, Running Quotes, Swimming Quotes, Work & Career QuotesA book that is shut is but a block.
Thomas Fuller
A few minutes ago every tree was excited, bowing to the roaring storm, waving, swirling, tossing their branches in glorious enthusiasm like worship. But though to the outer ear these trees are now silent, their songs never cease.
John Muir
It's never what you say, but how you make it sound sincere.
Marya Mannes