Well, not really a sphere. But “Dual Snub Hexpropello Dodecahedron” didn’t fit in the title.
This sculpture is by Roland Gagneux. You can find out more about his work here.
This is another piece from the 2013 Bridges Mathematical Art Gallery.
Appreciation Photography
Math Photo: Spherical Snow Cap
On a recent snowy day, I took a stroll through the park at lunchtime. This lovely round stone caught my eye.
The snow here has accumulated as a spherical cap. I also like how the area under the stone, untouched by snow, is some kind of projection of the sphere. I wonder what we can say about the direction of the snowfall, based on this snowless projection?
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Appreciation Photography
Math Photo: Snowy Histogram
The way the snow collected on the fence reminded me of a histogram, though you might have to rotate your head 225 degrees to see it for yourself! As I took this in, I wondered why some chains of snow were longer than others. I also wondered what this representation of data said about the direction of snowfall.
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Appreciation Numbers
02/14/2014 — Happy Permutation Day!
Today we celebrate a Permutation Day! I call days like today permutation days because the digits of the day and month can be rearranged to form the year.
Today is also a single-transposition day, since the each string can be formed by simply transposing the 0 and the 2 in the other string.
Celebrate Permutation Day by mixing things up! Try doing things in a different order today. Just remember, for some operations, order definitely matters!