The Foehr Reef is part of the worldwide Crochet Coral Reef Project. It was made by over 700 women and combines more than 4000 individual pieces of marine wonder. A short video
shows its beauty [alternating English and German audio]. PDFs
"The Crochet Coral Reef is a woolly celebration
of the intersection of higher geometry and feminine handicraft, and a testimony to the disappearing wonders of the marine world." It originated out of a desire to increase awareness of environmental threats to the world's reefs and is a conjunction of art, environmentalism, and geometry. [more inside]
posted by travelwithcats
on Aug 10, 2014 -
Measure-theoretic probability: Why it should be learnt and how to get started.
The clickable chart of distribution relationships.
Just two of the interesting and informative probability resources I've learned about, along with countless other tidbits of information, from statistician John D. Cook
and his probability fact-of-the-day Twitter feed ProbFact
. John also has daily tip and fact Twitter feeds for Windows keyboard shortcuts
, regular expressions
, TeX and LaTeX
, algebra and number theory
, topology and geometry
, real and complex analysis
, and beginning tomorrow, computer science
posted by grouse
on Dec 5, 2010 -
Let's say you're me and you're in math class, and you're supposed to be learning about factoring. Trouble is, your teacher is too busy trying to convince you that factoring is a useful skill for the average person to know with real-world applications ranging from passing your state exams all the way to getting a higher SAT score and unfortunately does not have the time to show you why factoring is actually interesting. It's perfectly reasonable for you to get bored in this situation. So like any reasonable person, you start doodling. [more inside]
posted by ErWenn
on Dec 3, 2010 -
The eyeballing game
: compare your best attempts at several instinctive everyday tasks - determining a point of convergence, bisecting an angle, finding the midpoint of a line - against mathematical certainty. In a more financial mood? Play Chartgame
: given a random historical stock chart of an unnamed S&P 500 company, choose to buy and sell as time advances to see if you can beat the market.
posted by Bora Horza Gobuchul
on Oct 14, 2009 -
Did the roof of the Pantheon influence Copernicus?
Are the planets of the solar system aligned in accordance with a nearly-forgotten hypothesis known (unfairly) as Bode's Law
? A fascinating wide-ranging discussion on BLDGBLOG with Walter Murch
, the visionary editor and sound designer for such films as The Conversation, Apocalypse Now, The English Patient, THX1138,
and many others. [Murch's film work has previously been discussed here
posted by digaman
on Apr 7, 2007 -
is an interesting geometric construction that seems to lend itself to folding, dissection, and space-filling in two and three dimensions.
posted by Wolfdog
on Jul 17, 2005 -
The Geometry Center
at the University of Minnesota, while now closed, maintains an awesome website with tons of math resources.
I like sphere eversion
, i.e. turning a sphere inside out. Link is to script of video, which explains things pretty well. Here is a clip
[QT]. Also good: notes
from a class on geometry and the imagination that John Conway and some friends gave awhile back. Old but good.
posted by mai
on Mar 1, 2005 -