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The 2020 π Day art celebrates the digits of π with piku (パイク) — poetry inspired by haiku. They serve as the form for The Outbreak Poems. On our 2022 Pi Day album "three one four: a number of notes", a piku accompanies each track.

It's Snowing in my CPU — a Snowflake catalogue

Now she was round and as pure as the morning light, crystal clear and like a tiny silver mirror she was able to catch and give back every colour in the world about her.
— Paul Gallico, Snowflake

Go ahead, meet some snowflakes.

leory
sudika
monia
morptel
leegilna
bubort
mivina

Somewhere in the world, it's snowing. But you don't need to go far—it's always snowing on this page. Explore light flurries, snowflake families and individual flakes. There are many unusual snowflakes and snowflake family 12 and family 46 are very interesting.

But don't settle for only pixel snowflakes—make an STL file and 3D print your own flakes!

Ad blockers may interfere with some flake images—the names of flakes can trigger ad filters.

And if after reading about my flakes you want more, get your frozen fix with Kenneth Libbrecht's excellent work and Paul Gallico's Snowflake.

Show a random flake or a random flake from this family.

snowflake crasselle

name crasselle
gender girl
family 12
hex 8, 36
t-SNE 31.8, 129.0

ρ vapor mass 0.4784843361 –1.08   16%
κ freezing 0.0097719341 –0.37   40%
μ melting 0.0381561655 –0.68   32%
γ melting 0.0000621188 –1.00   21%
α attachment 0.0214069871 –1.61   5%
β attachment 1.1744784051 –0.38   46%
θ attachment 0.0099111946 –1.02   11%
n growth steps 7466 –0.29   55%

The flake's ranking relative to other flakes with respect to each parameter is shown as a z-score (`(x-\mu)/\sigma`) and percentile.

snowflake files and resources

Download the snowflake's runfile.

Generate STL file for 3D printing.

high-resolution snowflake images

These are the original simulation images. Each snowflake was grown on a 800 × 800 hexagonal grid.

cartesian grid


hex grid


cartesian grid with vapor


hex grid with vapor



© 1999–2022 Martin Krzywinski | contact | Canada's Michael Smith Genome Sciences CentreBC Cancer Research CenterBC CancerPHSA