Dynamical systems are mathematical models used to describe the time-dependent position of a point’s position in ambient space. For example, a dynamical system could be used to describe the movement of a swinging pendulum. The way the pendulum moves is based on the laws of physics, but trajectory, velocity, acceleration, etc changes over time. Over at the University of Liverpool is a series of visualizations by mathematicians around the world that shows such dynamical systems.
Art of Mathematics – Visualization of Dynamical Systems
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Growth of Subreddits
As of September 2018, there were 892 million comments for the year so far, spread out over 355,939 subreddits. Here’s how it got to this point, and “what the internet has been talking about” during the past 12 years.
Toilet Paper Calculator
Maybe you’re starting to run low. Here’s how much you’ll need when you go to restock.
Working on Tips, by State
What percentage of a waiter and waitress’s income comes from tips and what comes from salary? The calculation isn’t straightforward but we can try.