The Dark Lantern
Chaotic Advection
Inverted Pendulum
A guide for building a functional lantern modeled after the one present in the show Over the Garden Wall. Composed of 3D printed parts and manufactured parts (LED, Reflector, etc.), the assembly is designed around a powerful LED, driver, and reflector and lenses.
I recreate and create videos of the experiments of Hassan Aref's 1984 paper: Stirring by chaotic advection which explore chaos (efficient mixing) for an incompressible, inviscid, 2D flow in a circular boundary containing a ‘blinking vortex’.
Via dynamic stability, a pendulum can stand upright when oscillated at the right frequency and amplitude. Built with a speaker head as an oscillator, I recorded and tracked the motion of the pendulum in response to perturbations with a high speed camera. Finally, I estimate the damping coefficient for one of the trials by fitting the equation of motion.