Webcam image processing

This script acquires a digital camera image from a Logitech webcam and processes it. I have been using it for online monitoring of an atomic hydrogen beam on a beam-dump quartz plate. To get repeatable images, it is helpful to set the webcam's gain and exposure.

Oscillator animation

An animated simple harmonic oscillator, integrated using the Verlet algorithm. You can see that the Verlet algorithm conserves energy, but only in an average sense.

Bringing fourier transforms to life

This script animates the reconstruction of a random ellipse from its fourier coefficients. It is a lot of fun to watch the reconstruction, especially for large aspect ratio ellipses.