John Baez, physicist, writes on ecology and mathematical physics.
Azimuth's Latest Posts
guest post by Marc Harper A while back, in the article Relative entropy minimization in evolutionary dynamics, we looked at extensions of the information geometry / evolutionary game theory story to more general time-scales, incentives, and geometries. Today we’ll see how to make this all work in finite populations! Let’s recall the basic idea from […]
guest post by Blake S. Pollard Over a century ago James Clerk Maxwell created a thought experiment that has helped shape our understanding of the Second Law of Thermodynamics: the law that says entropy can never decrease. Maxwell’s proposed experiment was simple. Suppose you had a box filled with an ideal gas at equilibrium at […]
You probably that planets go around the sun in elliptical orbits. But do you know why? In fact, they’re moving in circles in 4 dimensions. But when these circles are projected down to 3-dimensional space, they become ellipses! This animation by Greg Egan shows the idea: The plane here represents 2 of the 3 space […]
guest post by Piotr Migdał In this blog post I will introduce some basics of quantum mechanics, with the emphasis on why a particle being in a few places at once behaves measurably differently from a particle whose position we just don’t know. It’s a kind of continuation of the “Quantum Network Theory” series (Part […]
Russian scientists have recently found more new craters in Siberia, apparently formed by explosions of methane. Three were found last summer. They looked for more using satellite photos… and found more! “What I think is happening here is, the permafrost has been acting as a cap or seal on the ground, through which gas […]
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