Viewing posts for the category Featured on frontpage

Cistercian Numerals

The Cistercian numeral counting system used by the Cistercian monastic order in the late medieval period. The digits 1 – 9 are depicted as symbols arranged around a vertical stave. By placing these symbols reflected vertically and/or horizontally into each of four locations the decimal digits in the units, tens, hundreds and thousands positions could be represented, enabling the numbers 0 – 9999 to be defined, as shown below (by user Meteoorkip from Wikipedia, CC BY-SA 4.0):

Old-style Matplotlib charts

Just a quick demonstration of using Matplotlib and Pillow to customize a chart in the style of a 1950s academic journal article.

Molecular Dynamics modelling of effusion into a vacuum

This previous post introduced a simple molecular dynamics simulation for the equilibration of the speeds of the particles of an ideal gas. The present post extends the code a little to model the effusion of an ideal gas through a small hole into a vacuum.

Computer generated contemporary art (update)

This is an update to the post from February 2016 with an improved algorithm (given below) for generating pleasing random images by sequentially shifting the colour of pixels across a canvas.

The electric field of a capacitor

Just a quick update on this blog post on visualizing the electric field of a multipole arrangement of electric charges to visualize the electric field of a capacitor (two oppositely-charged plates, separated by a distance $d$). The code, which uses Matplotlib's streamplot function to visualize the electric field from the plates, modelled as rows of discrete point charges, is below.