By Bernd Heinrich
In Why We Run, biologist, award-winning nature author, and ultramarathoner Bernd Heinrich explores a brand new point of view on human evolution via studying the phenomenon of ultraendurance and makes extraordinary discoveries concerning the actual, non secular -- and primal -- force to win. instantly lyrical and medical, Why We Run indicates Heinrich's signature mixture of biology, anthropology, psychology, and philosophy, infused along with his ardour to find how and why we will in achieving superhuman abilities.
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Extra info for Why We Run: A Natural History
Surprisingly, Carrington’s observations showed that spots near the equator of the Sun revolved every 25 days, while spots about halfway toward the poles revolved every 28 days. What accounts for the difference is a phenomenon known as differential rotation. In fact, differential rotation accounts not only for the difference in the speed of sunspots, but for their very existence. It turns out that differential rotation may be the single most important cause of the Sun’s powerful and tempestuous magnetic field.
6 billion years ago a massive star was born inside a giant dust cloud. Excess heated gas created a bubble that caused dust nearby to start forming a cluster of smaller protostars, among them the one that would become our Sun. When the massive star went supernova, it peppered the infant star cluster with iron-60 and ignited some of the protostars. According to this theory, the supernova both birthed our Sun and left its DNA to prove it. An artist’s rendition of a supernova blasting out gas and debris the birth of oUr sUn 35 Job:07-30798 Title:Race Point : Our Sun #175 Dtp:228 Page:35 fUsion: energy of combination When the dust cluster that was our Sun’s protostar reached a critical temperature, it ignited a fusion reaction that began converting hydrogen into helium.
Imagine our skater stretching her arms out again. We expect that her spinning will slow. Now imagine we (deftly) handed her a set of dumbbells as she continued her spin. We know that she will spin even slower (probably much slower). Thanks to the conservation of angular momentum, we now know why. When we handed the skater dumbbells, we increased the amount of mass that had to be moved over a longer distance. That requires force. Conservation of angular momentum tells us that the amount of force we can apply to spinning the entire object is limited.
Why We Run: A Natural History by Bernd Heinrich