Nov. 19th, 2019

kengr: (Default)
So for some time I've seen mentions of dragonfruit in people 's blogs. But it's expensive so I wasn't gonna waste that much money on something that I might not like.

Yesterday, I spotted (again) a fruit bowl at the store that was a layer of pineapple, a layer of strawberries and a layer of dragonfruit. It wasn't too expensive so I grabbed it. I figured that worst case I could throw out the dragonfruit if it tasted awful.

Well, I've now had several pieces of dragonfruit. It did *not* taste awful.

On the other hand, while the texture had some interest, the flavor was pretty much "meh". It doesn't seem have *any* noticeable flavor.

Not sorry I bought the bowl, but wonderimng what all the fuss is about...

Symmetry

Nov. 19th, 2019 09:04 am
kengr: (Default)
This is likely not anything new to the math geeks, but I thought it might be of interest to the rest of you.

Consider the 5 regular polyhedra (best known from gaming dice these days)

tetrahedron
4 sides, 4 points, and 6 edges.

hexahedron (cube)
6 sides, 8 points, and 12 edges

octahedron
8 sides, 6 points, and 12 edges

dodecahedron
12 sides, 20 points, and 30 edges

icosahedron
20 sides, 12 points, and 30 edges

so the hexahedron and octahedron are a symmetry pair (just swap edges and points and they are the "same"). Ditto for the edodecahedron and the icosahedron.

And the tetrahedron is its own "symmetry twin".

This sort of thing, but in higher dimensions is behind the way the universe works. High end physics theory turns out to be symmetries in those higher dimensions.

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