Naked Science Forum
Life Sciences => Plant Sciences, Zoology & Evolution => Topic started by: Frederik Creemers on 23/10/2010 11:30:07
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Frederik Creemers asked the Naked Scientists:
Hi
I'm Frederik Creemers.
I was wondering, is there a reason why circles, spheres, circular and spherical motion occur so often in nature, and in our universe? Electrons circle around atom cores, moons rotate around a planet, planits around a star, stars around the center of a milkiway,... but also most fruits, and other things that grow on plants are round. When birds build their nests, the nests are round most of the time,...
why?
Greetings
Frederik
What do you think?
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Economy: the shape with the lowest surface area to volume ratio is the sphere ...
http://en.wikipedia.org/wiki/Surface-area-to-volume_ratio#Examples
If you want to enclose a given volume with the least amount of a material then the shape must be spherical.
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Can constructive strength being more evenly distribued throughout, be considered?
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I don't agree that *most* things are round..
spirals yes...
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You'll find many more ellipses than you will true circles (circles are technically ellipses). Gravitational pull will have a lot to do with why we see 'circles' and 'spheres' in our universe.