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# Posts

### March 28, 2015

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Plate from Anatomie der Echinothuriden – Walter Schurig [1906] The Biodiversity Heritage Library is a consortium of natural history and botanical libraries that cooperate to digitize the legacy literature of biodiversity held in their collections and to make that literature available for open access and responsible use as a part of a global biodiversity commons. […]
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sheaf cohomology for kindergarteners
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Variation of Reutersvard's figure by Jep Lor   http://im-possible.info/english/art/computer/jep-lor.html   Author - https://www.behance.net/jeplor
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Eleven interactive fractals in 2D and 3D (signup required)
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via Mathematicus
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Generating and solving anagrams

### March 27, 2015

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infinity-imagined:This animation shows a human brain in cross-section.  A head was frozen in a block of ice, sectioned with a macrotome, and photographed repeatedly. 700 horizontal sections with a thickness of 174 microns were produced and imaged.  The animation starts near the top of the head and proceeds down towards the neck, then reverses and returns to the top.Images produced by the Visible Human Project, National Library of Medicine; http://vhnet.nlm.nih.gov/
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Real sculpture of impossible triangle by mtairymd   http://im-possible.info/english/art/sculpture/mtairymd.html   Author - http://www.instructables.com/member/mtairymd/
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From Finger Magazine a few years back, in the heyday of rickrolling and humor charts. Maybe some choose to forget this era, but I'm never gonna give you up, let…Tags: humor
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[...]
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via visualizingmath
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Handy. (Pun intended) via lthmath
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Location-based data from social media can be interesting to analyze and map, but there are a lot of inherent challenges with the data. The main one, which designers often ignore,…Tags: Floatingsheep, Twitter
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(Click on the comic if you can't see the full image.) (C)Copyright 2015, C. Burke.I thought about ending with a comment about their trainer, Mr. Bechdel, but I thought better of it. BODMAS is another mnemonic for the Order of Operations, just as PEMDAS is. I don't know if it's a regional thing, or what people learned in grad school or what. Seriously, I didn't learn "PEMDAS" until I started teaching, and that was my second career. Come back often for more funny math comics. Okay?

### March 26, 2015

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Impossible Pencil   by Dani Aristizábal   http://im-possible.info/english/art/computer/dani-aristizabal.html   Author - https://www.behance.net/danielaristizabal
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Data journalism is relatively new as a concept, but in practice it has been around for a good while. Scott Klein for ProPublica tells the story of Horace Greeley, an…Tags: journalism
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Not quite as fun as the real thing, but a bit more instantaneous.
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A curve of constant width is a convex, two-dimensional shape that, when rotated inside a square, always makes contact with all four sides. via Mathematicus
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hyrodium: Double Pendulum Simulations.

### March 25, 2015

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I’ve created a fairly basic but effective poster pack of the Math Mr Men. It’s the UK version (trapezium) but you could just take that one out if you wanted. Enjoy. Math Mr Men Poster Pack I’ve also uploaded it … Continue reading →
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10 new figures were appended to the Figures Library   Now it contains 1010 impossible figures. http://im-possible.info/english/library/grey/grey101.html
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via lthmath
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Just… awesome fun.
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Ri Liu provides an exploratory view of gender gaps around the world through labor participation, parliament participation, and income. Be sure to try the sorting options, which help you pull…Tags: gender equality
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(Click on the comic if you can't see the full image.) (C)Copyright 2015, C. Burke.Pi doesn't do rational conversations so well . . . Bringing back some of the oldies before I hit 1,000 comics. So what am I missing? What topics haven't I done? Or haven't done in a while? What are your favorites? Likes/Dislikes? (Almost sounds like a superficial interview.) Come back often for more funny math comics. Okay?
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shonk:Platonic The five Platonic solids, viewed from each of the three coordinate directions while rotating.

### March 24, 2015

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Haruspex   by DrawingsByRolf   http://im-possible.info/english/art/pencil/drawingsbyrolf.html   Author - http://drawingsbyrolf.tumblr.com/
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There are a lot of beards and other types of facial hair in Major League Baseball. In case you're wondering how many and at what level, the Washington Post has…Tags: beards, Washington Post
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via Britton
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Mojulo is a slightly bizarre but intriguing ‘app’ (but entirely online) that animates any function you pump into it. Spend 5 minutes getting  your head around it and it gets quite addictive.