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Monthly Archives: January 2016
The SpidertoHuman Ratio
Since I like spiders, I was pleased to read a rough estimate of 21 quadrillion for the world’s population of spiders (source: here). The website http://www.worldometers.info/worldpopulation/ gives the current human population as ~7.4 billion. Dividing the estimated spider population by the estimated … Continue reading
Posted in Humor, Life, Mathematics, Science and Scientists
Tagged biology, human, Mathematics, ratio, science, spider
1 Comment
Constructing “Nightday” — An Experiment Involving Sleep
The last workweek having left me rather tired, I went to bed early Friday, after work, and then, having slept all I could sleep, I then woke back up quite early Saturday morning, before sunrise, and couldn’t get back to … Continue reading
Posted in Life, Mental Health, Science and Scientists
Tagged day, experiment, night, Nightday, science, sleep, sleep cycle, sleep research, threeday weekend, weekend
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A John Lennon Quote, On Waking Up, and Finding a Cure
Source of quote: https://www.goodreads.com/quotes/search?utf8=%E2%9C%93&q=lennon+yoko&commit=Search
Posted in Mental Health, Music, Politics, Quotations
Tagged awake, cure, John Lennon, Lennon, quotation, quote, wake up
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The Seven Types of Beatles Fans: My Utterly Biased View
I have never met a serious fan of The Beatles who did not have one favorite Beatle. (I’m sure it is obvious which Beatle is my favorite.) As for Yoko Ono, she is a highly polarizing figure among Beatles fans … Continue reading
Six “Cubish” Polyhedra
I’m using the term “cubish polyhedra” here to refer to polyhedra which resemble a cube, if one looks only at the faces they have which feature the largest number of sides, always six in number, and with positions corresponding to … Continue reading
Eight Chiral Polyhedra with Icosidodecahedral Symmetry
To see a larger version of any rotating model, simply click on it. Each of these polyhedral images was created using a program called Stella 4d, which is available here.
Posted in Mathematics
Tagged chiral, geometry, icosahedral, icosidodecahedral, Mathematics, polyhedra, polyhedron, symmetry
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Eleven Convex, NonChiral Polyhedra Featuring Cuboctahedral Symmetry
To enlarge any of these images, simply click on the ones you choose. All of these images were created using Stella 4d: Polyhedron Navigator, available at http://www.software3d.com/Stella.php.
Posted in Mathematics
Tagged cuboctahedral, geometry, Mathematics, octahedral, polyhedra, polyhedron, symmetry
6 Comments