Essence of linear algebra - "[Grant Sanderson of 3Blue1Brown (now at Khan Academy) animates] the geometric intuitions underlying linear algebra, making the many matrix and vector operations feel less arbitrary." [more inside]
Understanding e to the pi i - "An intuitive explanation as to why e to the pi i equals -1 without a hint of calculus. This is not your usual Taylor series nonsense." (via via; reddit; previously) [more inside]
Hyperreal numbers: infinities and infinitesimals - "In 1976, Jerome Keisler, a student of the famous logician Tarski, published this elementary textbook that teaches calculus using hyperreal numbers. Now it's free, with a Creative Commons copyright!" (pdf—25mb :) [more inside]
How To Fold a Julia Fractal. A beautiful interactive introduction to complex numbers, fractals and waves. (Requires WebGL). To Infinity And Beyond is a similar introduction to calculus.
"Louisiana is the world's prison capital. The state imprisons more of its people, per head, than any of its U.S. counterparts. First among Americans means first in the world. Louisiana's incarceration rate is nearly triple Iran's, seven times China's and 10 times Germany's. The hidden engine behind the state's well-oiled prison machine is cold, hard cash." Louisiana Incarcerated is a tour de force eight-part series on the Louisiana prison system. [more inside]
Survival, Strength, Sisterhood: Power of Women in the Downtown Eastside (Vimeo link; possibly triggering) is a 2011 short film by Alejandro Zuluaga and Harsha Walia, based on a concept by the Downtown Eastside Power of Women Group (TRT 32:00). [more inside]
Everything you never wanted to know about the American prison-industrial complex. Part 2: Prison Nation.
It’s been a long, weird and expensive week all over. Why not stay in tonight and watch guys (mostly) with long hair playing strange and difficult music from a long lost decade? [more inside]
Canadian writer, actor, and director Robert Lepage, whose work has included Jésus de Montréal and Le Confessional, has recently turned his attention to - of all places - the Bunge Grain complex in Quebec City. In celebration of Quebec's 400th anniversary, Lepage turned the complex into a vast movie screen 30 meters tall and 600 meters wide. This project is known as the Image Mill. If you happen to be in Quebec City, you can watch it at the Port of Québec, every night at 10 PM, until August 24.
The V-22 Osprey tilt-rotor aircraft is going to combat. The aircraft cannot autorotate to safe landing if it loses power in helicopter mode, and has only a rearward facing gun. previously
Iraq's Horror Movie Posters. According to Sky News, insurgent forces are taking up Worth1000 style criticism to hold up a mirror to citizens of the US and their Military-Entertainment complex.
About Face: The Role of the Arms Lobby In the Bush Administration's Radical Reversal of Two Decades of U.S. Nuclear Policy.
About Face: The Role of the Arms Lobby In the Bush Administration's Radical Reversal of Two Decades of U.S. Nuclear Policy. A detailed look at their relationship and the influence of the defense industry on the policies which they profit from.