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Posts

April 24, 2014

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9:52 AM | Where People Bike and Run, Worldwide
Remember those running maps I made with limited data from RunKeeper? Strava, which also provides an app to track your …
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1:08 AM | backwardinduction: In mathematics, an algebraic set is the set...
backwardinduction: In mathematics, an algebraic set is the set of solutions of a system of polynomial equations. Algebraic sets are sometimes also called algebraic varieties, but normally an algebraic variety is an irreducible algebraic set, i.e. one which is not the union of two other algebraic sets. Algebraic sets and algebraic varieties are the central objects of study in algebraic geometry. The word “variety” is employed in the sense which is similar to that of manifold; […]

April 23, 2014

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8:52 PM | Apply to be a Tumblr Fellow at the 2014 Personal Democracy Forum
Apply to be a Tumblr Fellow at the 2014 Personal Democracy Forum: staff: Using Tumblr to change the world? To change it for the better, presumably? Then you’re just the kind of person we’d like to send to the 2014 Personal Democracy Forum. It’ll be two days of debating the present and charting the future with brilliant minds from across the political spectrum. It’ll be in New York City. It’ll be amazing. Apply now.
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8:18 PM | Keeping Time: Why 60 Minutes?
Keeping Time: Why 60 Minutes?: 11erasorhed11: Dividing the day into hours, minutes and seconds is a recent practice with thousands of years of science and tradition behind it. If you think this is interesting, Sonic Geometry takes it a step further, to the point of Mind = Blown. Check it out:
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7:08 PM | Hand With Reflecting Sphere
Hand With Reflecting Sphere   by Phil Allin   http://im-possible.info/english/art/applied_art/philip-allin/hand-with-reflecting-sphere.html
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5:41 PM | geglobalresearch: GE engineer Joe shares videos from the labs...
geglobalresearch: GE engineer Joe shares videos from the labs showcasing how & why we test #materials! #composites #ceramics http://www.geglobalresearch.com/blog/springbreakit #springbreakit
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2:04 PM | txchnologist: Viral Membrane Protects Medical Nanorobots From...
Folded DNA makes a 3-D nanostructure that is embedded with lipid molecules. Courtesy Wyss. The lipid molecules attached to the DNA nanostructure act as handles to direct the assembly of a lipid bilayer around the structure. Courtesy Wyss. The end product is a totally lipid bilayer nanostructure that cloaks the DNA nanostructure from an organism's immune system. Courtesy Wyss. Enveloped viruses (bottom) coat themselves with lipids. New lipid-coated DNA nanodevices (top) closely resemble […]
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1:47 PM | principemelon: karaniwangbinatilyo: THE SECRETS OF...
principemelon: karaniwangbinatilyo: THE SECRETS OF NATURE Cool posters. Too bad string theory is a joke.
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11:41 AM | The Change My Son Brought, Seen Through Personal Data
My data point turned six months recently. It was a fast six months, and it was a slow six months. …
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2:55 AM | 12gon: cluster 4hedral / 8hedral honeycomb
12gon: cluster 4hedral / 8hedral honeycomb
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12:10 AM | allofthemath: This, ladies and gentlemen and genderqueer folks,...
allofthemath: This, ladies and gentlemen and genderqueer folks, is Pascal’s tetrahedron, a three dimensional analogue of Pascal’s triangle, and it’s pretty freaking great. I’ve never heard of this before!
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12:07 AM | tigburr: coolmathstuff: allofthemath: appliedmathemagics: the...
tigburr: coolmathstuff: allofthemath: appliedmathemagics: themathkid: Can’t. Stop. Watching. this is hypnotic… Conic sections are all connected! A hyperbola is an anti circle, in this case. Remember, the equation for a circle involves adding x squared and y squared, while the equation for a hyperbola involves subtracting one from the other. The other consequence of this is that is that if you extend the graph of either one to include imaginary and complex x or y values, a hyperbola […]

April 22, 2014

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3:44 PM | The Upshot, a data-centric site from The New York Times launched
We heard a little bit about The Upshot last month. Now we get to see it. From editor David Leonhardt …
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3:39 PM | jtotheizzoe: Happy Earth Day! Here is a new time-lapse of...
jtotheizzoe: Happy Earth Day! Here is a new time-lapse of images from the International Space Station, titled The World Outside My Window. You may not be looking at it from this perspective, but you’ve got a world outside your window, too. Take care of it. Turn up your speakers, go full screen, and lean back. Heck … this one even goes to 4K. Enjoy. (video by David Peterson)
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2:56 PM | fencehopping: Melting aluminum with an electromagnet.
fencehopping: Melting aluminum with an electromagnet.
Editor's Pick
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2:38 PM | Physics-exploiting axe splits wood in record time By Ryan...
Physics-exploiting axe splits wood in record time By Ryan Whitwam Chopping wood is hard, but it’s something modern society has largely freed us from as a daily activity. That’s nice, but consequently, if you ever do have to chop wood, you’re more than likely going to suck at it. Splitting a log requires a surprising amount of force, but Finnish inventor Heikki Kärnä has invented a new kind of axe that makes it much easier and safer. Yes, axes have existed since time immemorial, but […]
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2:00 PM | Cheesy Geometry Jokes
(function(jQuery) { function init() { wSlideshow.render({elementID:"850086446255391728",nav:"numbers" [...]
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1:21 PM | Swearing
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1:07 PM | Math Gene
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10:55 AM | Music preference by region
Movoto mapped music preference for various genres, across the United States. We calculated musical taste scores using data from the …
Editor's Pick
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5:37 AM | Photo
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5:00 AM | Hard-Boiled
(Click on the cartoon to see the full image.) (C)Copyright 2014, C. Burke.That's the yolk. I was working on the monologue for a while before I realized if anyone were willing to read more that two paragraphs of my prose, I could sell a few stories. I couldn't tag this one "PI", because it's not "pi". And if I make a new "P.I." tag, I'd have to go back and tag most of the "Pi" comics.
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3:05 AM | Beauty + Math
BEAUTY OF MATHEMATICS from PARACHUTES on Vimeo. Here is a clean well done video that triptych’s the real world, equations that model it, and a graphic representation. It is really well done. Parachutes’ whole Vimeo channel is really nice. Check out the Symmetry-a palimdromic film especially

April 21, 2014

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6:57 PM | The Critter Chronicles
Another screenshot from the game The Book of Unwritten Tales: The Critter Chronicles   http://im-possible.info/english/art/games/the-critter-chronicles.html#2
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6:06 PM | digg: Probably the greatest machine man has ever created
digg: Probably the greatest machine man has ever created
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4:00 PM | Misleading Inverted Time Series
Here is a graphic published by Reuters that has been making the rounds on the web, here and here. It depicts the number of gun deaths in Florida. On first glance it appears that gun deaths had dropped just after 2005 when Florida enacted its 'Stand Your Ground' law. The trouble is, the vertical scale is inverted: higher numbers are lower on the graph not higher. The post on the Business Insider showed the graph presented in a more standard way: higher numbers are plotted higher on the graph.Its […]
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2:47 PM | txchnologist: The Chance To Dance Again by Michael Keller We...
Herr said this was the first public demonstration of a running gait by powered prosthetics under neural command. txchnologist: The Chance To Dance Again by Michael Keller We highlighted the TED talk of Hugh Herr a couple of weeks ago. But his work is too important and beautiful to leave to just one post. The MIT associate professor of media arts and sciences is making prosthetic limbs and exoskeletons that restore function in those who have lost legs from injury or disease. This set of […]
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10:29 AM | How people die in America
Matthew Klein for Bloomberg View explored mortality in America through a slidedeck of charts. The animations in between each slide …

April 20, 2014

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8:53 PM | Photo
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7:10 PM | Origami
Origami of impossible figures by Julien Lozi (origamaniac)   http://im-possible.info/english/art/sculpture/julien-lozi.html Author - http://origamaniac.deviantart.com/
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