In a gorgeous animation, Malin Christersson shows how much simpler it is to plot out celestial mechanics when you assume that all the bodies in our solar system are in orbit around the sun, rather than the other way around.
Given the lack of a universal reference point, it's not exactly true that anything goes around anything else -- you can plot out the universe as though any point in it were stationary and everything else was moving in reference to it. But when you adopt the heliocentric model, the number of equations you have to do in order to make sense of things drops by an enormous amount, to the point where it's hard to imagine why anyone wouldn't want to default to this model.
My dear old friend Possum Man told me about a trig class in his Waldorf school where the teacher showed them how to calculate the position of the planets in a geocentric universe, to drive home the real meaning of relativity.
Christersson's graph is part of a great potted history of geocentrism and heliocentrism, itself part of a self-directed tutorial on trigonometry.
Trigonometry - Heliocentrism and Geocentrism [Malin Christersson]
(via Bruce Sterling)
Maximum Lean Angle I can’t even touch my toes.
Chinese researchers demonstrated quantum entanglement at a record distance, between a satellite and ground stations 1,200 kilometers apart. When objects are quantum entangled, their quantum states are linked. Measuring the state of one affects the state of the other. It’s weird shit. So weird that Einstein called it “spooky action at a distance.” The experiment […]
Here’s a good video that describes the laws of thermodynamics in an intuitive way, and why perpetual motion machines won’t work.
The current web development landscape is rife with buzzwords and technology that gets abandoned almost as soon as it’s made. If you’ve never written a line of code before, it can be hard to figure out what’s coming, what’s here to stay, or how to get ahead.This Beginner Web Development Bundle is a great place […]
The Fader Stealth Quadcopter from TRNDlabs packs incredible flight performance into a package small enough to land on your phone screen, and it’s available now in the Boing Boing Store.The Fader’s six-axis gyroscope module gives it perfect balance in the air. This makes the onboard 720p HD camera all the better for shooting amazing flight […]
Although fully autonomous vehicles aren’t yet allowed on public streets, they are poised to dominate the roads in the not-too-distant future. But before that happens, Apple, Google, Uber, and other companies now investing in self-driving tech are going to need talented developers that can account for the dizzying array of factors at play when a […]