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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Firearms Dealers vs. Burgers, Pizza, and Coffee
As of May 2016, there were 64,432 licensed firearms dealers and pawnbrokers, which got me wondering how that compares to other businesses.
Saving for Retirement and Age
People tend to have more money saved up over time, but range and variation also grow, and often it’s not enough.
Who is Older and Younger than You
Here’s a chart to show you how long you have until you start to feel your age.